CAT24C01, CAT24C02,

CAT24C04, CAT24C08,
CAT24C16

1-Kb, 2-Kb, 4-Kb, 8-Kb and

16-Kb I2C CMOS Serial
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EEPROM
Description SOIC−8
W SUFFIX
The CAT24C01/02/04/08/16 are 1−Kb, 2−Kb, 4−Kb, 8−Kb and CASE 751BD
16−Kb respectively CMOS Serial EEPROM devices organized PDIP−8
internally as 8/16/32/64 and 128 pages respectively of 16 bytes each. L SUFFIX TSOT−23
CASE 646AA TD SUFFIX
All devices support both the Standard (100 kHz) as well as Fast
CASE 419AE
(400 kHz) I2C protocol. MSOP−8
Data is written by providing a starting address, then loading 1 to 16 Z SUFFIX TDFN−8*
contiguous bytes into a Page Write Buffer, and then writing all data to CASE 846AD VP2 SUFFIX
CASE 511AK
non−volatile memory in one internal write cycle. Data is read by
providing a starting address and then shifting out data serially while TSSOP−8 UDFN8−EP
automatically incrementing the internal address count. Y SUFFIX HU4 SUFFIX
CASE 948AL CASE 517AZ
External address pins make it possible to address up to eight
CAT24C01 or CAT24C02, four CAT24C04, two CAT24C08 and one WLCSP−4** WLCSP−5**
CAT24C16 device on the same bus. C4A SUFFIX C5A SUFFIX
CASE 567DC CASE 567DD
Features
• Supports Standard and Fast I2C Protocol PIN CONFIGURATIONS
• 1.7 V to 5.5 V Supply Voltage Range
SCL 1 5 WP
• 16−Byte Page Write Buffer
• Hardware Write Protection for Entire Memory VSS 2

• Schmitt Triggers and Noise Suppression Filters on I2C Bus Inputs SDA 3 4 VCC
(SCL and SDA)
TSOT−23 (TD) (Top View)
• Low power CMOS Technology
Pin 1 A B Pin 1 1 2 3
• More than 1,000,000 Program/Erase Cycles
• 100 Year Data Retention 1 VCC VSS VCC VSS A
• Industrial and Extended Temperature Range
SDA B
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant 2 SCL SDA WP SCL C

PIN CONFIGURATION
WLCSP−4** WLCSP−5**
CAT24C__ (Top Views)
16 / 08 / 04 / 02 / 01 ** WLCSP are available for the CAT24C04,
NC / NC / NC / A0 / A0 1 8 VCC CAT24C08 and CAT24C16 only.
NC / NC / A1 / A1 / A1 WP For availability, please contact factory.
2 7
NC / A2 / A2 / A2 / A2 3 6 SCL
Pin 1 TOP MARKING FOR WLCSP Pin 1
VSS 4 5 SDA (Ball Down)

PDIP (L), SOIC (W), TSSOP (Y), MSOP (Z), X X = Specific Device X
TDFN, (VP2)*, UDFN−EP (HU4) (Top View) YM X = Code YM
* The TDFN (VP2) package is not recommended for new designs. 4 = 24C04
8 = 24C08
WLCSP−4 6 = 24C16 WLCSP−5
ORDERING INFORMATION
See detailed ordering and shipping information in the package Y = Production Year (Last Digit)
dimensions section on page 18 of this data sheet. M = Production Month (1−9, O, N, D)

© Semiconductor Components Industries, LLC, 2012 1 Publication Order Number:

September, 2012 − Rev. 22 CAT24C01/D
 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

VCC
Table 1. PIN FUNCTION
Pin Name† Function
A0, A1, A2 Device Address Input
SCL
SDA Serial Data Input/Output

A2, A1, A0 CAT24Cxx SDA SCL Serial Clock Input

WP Write Protect Input
WP VCC Power Supply
VSS Ground
NC No Connect
VSS
†The exposed pad for the TDFN/UDFN packages can be left floating
or connected to Ground.
Figure 1. Functional Symbol

Table 2. ABSOLUTE MAXIMUM RATINGS

Parameters Ratings Units
Storage Temperature −65 to +150 °C
Voltage on any pin with respect to Ground (Note 1) −0.5 to +6.5 V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. During input transitions, voltage undershoot on any pin should not exceed −1 V for more than 20 ns. Voltage overshoot on pins A0, A1, A2
and WP should not exceed VCC + 1 V for more than 20 ns, while voltage on the I2C bus pins, SCL and SDA, should not exceed the absolute
maximum ratings, irrespective of VCC.

Table 3. RELIABILITY CHARACTERISTICS (Note 2)

Symbol Parameter Min Units
NEND (Note 3) Endurance 1,000,000 Program / Erase Cycles
TDR Data Retention 100 Years
2. These parameters are tested initially and after a design or process change that affects the parameter according to appropriate AEC−Q100
and JEDEC test methods.
3. Page Mode, VCC = 5 V, 25°C.

Table 4. D.C. OPERATING CHARACTERISTICS

(VCC = 1.8 V to 5.5 V, TA = −40°C to +125°C and VCC = 1.7 V to 5.5 V, TA = −40°C to +85°C, unless otherwise specified.)
Symbol Parameter Test Conditions Min Max Units
ICCR Read Current Read, fSCL = 400 kHz 1 mA
ICCW Write Current Write, fSCL = 400 kHz 2 mA
ISB Standby Current All I/O Pins at GND or VCC TA = −40°C to +85°C 1 mA
VCC ≤ 3.3 V

TA = −40°C to +85°C 3
VCC > 3.3 V

TA = −40°C to +125°C 5
IL I/O Pin Leakage Pin at GND or VCC 2 mA
VIL Input Low Voltage −0.5 0.3 x VCC V
VIH Input High Voltage A0, A1, A2 and WP 0.7 x VCC VCC + 0.5 V
SCL and SDA 0.7 x VCC 5.5
VOL Output Low VCC > 2.5 V, IOL = 3 mA 0.4
Voltage
VCC < 2.5 V, IOL = 1 mA 0.2

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 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

Table 5. PIN IMPEDANCE CHARACTERISTICS

(VCC = 1.8 V to 5.5 V, TA = −40°C to +125°C and VCC = 1.7 V to 5.5 V, TA = −40°C to +85°C, unless otherwise specified.)
Symbol Parameter Conditions Max Units
CIN (Note 4) SDA Pin Capacitance VIN = 0 V, f = 1.0 MHz, VCC = 5.0 V 8 pF
Other Pins 6 pF
IWP (Note 5) WP Input Current VIN < VIH, VCC = 5.5 V 130 mA
VIN < VIH, VCC = 3.3 V 120
VIN < VIH, VCC = 1.7 V 80
VIN > VIH 2
IA (Note 5) Address Input Current VIN < VIH, VCC = 5.5 V 50 mA
(A0, A1, A2)
Product Rev H: CAT24C02 VIN < VIH, VCC = 3.3 V 35
Product Rev K: CAT24C04,
VIN < VIH, VCC = 1.7 V 25
CAT24C08, CAT24C16
VIN > VIH 2
4. These parameters are tested initially and after a design or process change that affects the parameter according to appropriate AEC−Q100
and JEDEC test methods.
5. When not driven, the WP, A0, A1 and A2 pins are pulled down to GND internally. For improved noise immunity, the internal pull−down is
relatively strong; therefore the external driver must be able to supply the pull−down current when attempting to drive the input HIGH. To
conserve power, as the input level exceeds the trip point of the CMOS input buffer (~ 0.5 x VCC), the strong pull−down reverts to a weak
current source.

Table 6. A.C. CHARACTERISTICS

(Note 6) (VCC = 1.8 V to 5.5 V, TA = −40°C to +125°C and VCC = 1.7 V to 5.5 V, TA = −40°C to +85°C, unless otherwise specified.)
Standard Fast

Symbol Parameter Min Max Min Max Units

FSCL Clock Frequency 100 400 kHz
tHD:STA START Condition Hold Time 4 0.6 ms
tLOW Low Period of SCL Clock 4.7 1.3 ms
tHIGH High Period of SCL Clock 4 0.6 ms
tSU:STA START Condition Setup Time 4.7 0.6 ms
tHD:DAT Data In Hold Time 0 0 ms
tSU:DAT Data In Setup Time 250 100 ns
tR SDA and SCL Rise Time 1000 300 ns
tF (Note 6) SDA and SCL Fall Time 300 300 ns
tSU:STO STOP Condition Setup Time 4 0.6 ms
tBUF Bus Free Time Between STOP and START 4.7 1.3 ms
tAA SCL Low to Data Out Valid 3.5 0.9 ms
tDH Data Out Hold Time 100 100 ns
Ti (Note 6) Noise Pulse Filtered at SCL and SDA Inputs 100 100 ns
tSU:WP WP Setup Time 0 0 ms
tHD:WP WP Hold Time 2.5 2.5 ms
tWR Write Cycle Time 5 5 ms
tPU (Notes 7, 8) Power−up to Ready Mode 1 1 ms
6. Test conditions according to “AC Test Conditions” table.
7. Tested initially and after a design or process change that affects this parameter.
8. tPU is the delay between the time VCC is stable and the device is ready to accept commands.

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 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

Table 7. A.C. TEST CONDITIONS

Input Drive Levels 0.2 x VCC to 0.8 x VCC
Input Rise and Fall Time v 50 ns
Input Reference Levels 0.3 x VCC, 0.7 x VCC
Output Reference Level 0.5 x VCC
Output Test Load Current Source IOL = 3 mA (VCC w 2.5 V); IOL = 1 mA (VCC < 2.5 V); CL = 100 pF

Power−On Reset (POR) bus via their respective SCL and SDA pins. The transmitting
Each CAT24Cxx* incorporates Power−On Reset (POR) device pulls down the SDA line to ‘transmit’ a ‘0’ and
circuitry which protects the internal logic against powering releases it to ‘transmit’ a ‘1’.
up in the wrong state. Data transfer may be initiated only when the bus is not
A CAT24Cxx device will power up into Standby mode busy (see AC Characteristics).
after VCC exceeds the POR trigger level and will power During data transfer, the SDA line must remain stable
down into Reset mode when VCC drops below the POR while the SCL line is high. An SDA transition while SCL is
trigger level. This bi−directional POR feature protects the high will be interpreted as a START or STOP condition
device against ‘brown−out’ failure following a temporary (Figure 2). The START condition precedes all commands. It
loss of power. consists of a HIGH to LOW transition on SDA while SCL
*For common features, the CAT24C01/02/04/08/16 will be is HIGH. The START acts as a ‘wake−up’ call to all
referred to as CAT24Cxx. receivers. Absent a START, a Slave will not respond to
commands. The STOP condition completes all commands.
Pin Description It consists of a LOW to HIGH transition on SDA while SCL
SCL: The Serial Clock input pin accepts the Serial Clock is HIGH.
generated by the Master.
Device Addressing
SDA: The Serial Data I/O pin receives input data and The Master initiates data transfer by creating a START
transmits data stored in EEPROM. In transmit mode, this pin condition on the bus. The Master then broadcasts an 8−bit
is open drain. Data is acquired on the positive edge, and is serial Slave address. For normal Read/Write operations, the
delivered on the negative edge of SCL. first 4 bits of the Slave address are fixed at 1010 (Ah). The
A0, A1 and A2: The Address inputs set the device address next 3 bits are used as programmable address bits when
when cascading multiple devices. When not driven, these cascading multiple devices and/or as internal address bits.
pins are pulled LOW internally. The last bit of the slave address, R/W, specifies whether a
WP: The Write Protect input pin inhibits all write Read (1) or Write (0) operation is to be performed. The 3
operations, when pulled HIGH. When not driven, this pin is address space extension bits are assigned as illustrated in
pulled LOW internally. Figure 3. A2, A1 and A0 must match the state of the external
address pins, and a10, a9 and a8 are internal address bits.
Functional Description
Acknowledge
The CAT24Cxx supports the Inter−Integrated Circuit
(I2C) Bus data transmission protocol, which defines a device After processing the Slave address, the Slave responds
that sends data to the bus as a transmitter and a device with an acknowledge (ACK) by pulling down the SDA line
receiving data as a receiver. Data flow is controlled by a during the 9th clock cycle (Figure 4). The Slave will also
Master device, which generates the serial clock and all acknowledge the address byte and every data byte presented
START and STOP conditions. The CAT24Cxx acts as a in Write mode. In Read mode the Slave shifts out a data byte,
Slave device. Master and Slave alternate as either and then releases the SDA line during the 9th clock cycle. As
transmitter or receiver. long as the Master acknowledges the data, the Slave will
continue transmitting. The Master terminates the session by
I2C Bus Protocol not acknowledging the last data byte (NoACK) and by
The I2C bus consists of two ‘wires’, SCL and SDA. The issuing a STOP condition. Bus timing is illustrated in
two wires are connected to the VCC supply via pull−up Figure 5.
resistors. Master and Slave devices connect to the 2−wire

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 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

SCL

SDA

START STOP
CONDITION CONDITION

Figure 2. Start/Stop Timing

1 0 1 0 A2 A1 A0 R/W CAT24C01 and CAT24C02

1 0 1 0 A2 A1 a8 R/W CAT24C04

1 0 1 0 A2 a9 a8 R/W CAT24C08

1 0 1 0 a10 a9 a8 R/W CAT24C16

Figure 3. Slave Address Bits

BUS RELEASE DELAY (TRANSMITTER) BUS RELEASE DELAY

(RECEIVER)
SCL FROM 1 8 9
MASTER

DATA OUTPUT
FROM TRANSMITTER

DATA OUTPUT
FROM RECEIVER
ACK SETUP (w tSU:DAT)
START ACK DELAY (v tAA)

Figure 4. Acknowledge Timing

tF tHIGH tR
tLOW tLOW

SCL

tSU:STA tHD:DAT
tHD:SDA tSU:DAT tSU:STO

SDA IN
tBUF
tAA tDH

SDA OUT

Figure 5. Bus Timing

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 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

WRITE OPERATIONS

Byte Write sixteen bytes are received and the STOP condition has been
In Byte Write mode, the Master sends the START sent by the Master, the internal Write cycle begins. At this
condition and the Slave address with the R/W bit set to zero point all received data is written to the CAT24Cxx in a single
to the Slave. After the Slave generates an acknowledge, the write cycle.
Master sends the byte address that is to be written into the
address pointer of the CAT24Cxx. After receiving another Acknowledge Polling
acknowledge from the Slave, the Master transmits the data The acknowledge (ACK) polling routine can be used to
byte to be written into the addressed memory location. The take advantage of the typical write cycle time. Once the stop
CAT24Cxx device will acknowledge the data byte and the condition is issued to indicate the end of the host’s write
Master generates the STOP condition, at which time the operation, the CAT24Cxx initiates the internal write cycle.
device begins its internal Write cycle to nonvolatile memory The ACK polling can be initiated immediately. This
(Figure 6). While this internal cycle is in progress (tWR), the involves issuing the start condition followed by the slave
SDA output will be tri−stated and the CAT24Cxx will not address for a write operation. If the CAT24Cxx is still busy
respond to any request from the Master device (Figure 7). with the write operation, NoACK will be returned. If the
CAT24Cxx has completed the internal write operation, an
Page Write ACK will be returned and the host can then proceed with the
The CAT24Cxx writes up to 16 bytes of data in a single next read or write operation.
write cycle, using the Page Write operation (Figure 8). The
Page Write operation is initiated in the same manner as the Hardware Write Protection
Byte Write operation, however instead of terminating after With the WP pin held HIGH, the entire memory is
the data byte is transmitted, the Master is allowed to send up protected against Write operations. If the WP pin is left
to fifteen additional bytes. After each byte has been floating or is grounded, it has no impact on the operation of
transmitted the CAT24Cxx will respond with an the CAT24Cxx. The state of the WP pin is strobed on the last
acknowledge and internally increments the four low order falling edge of SCL immediately preceding the first data
address bits. The high order bits that define the page address byte (Figure 9). If the WP pin is HIGH during the strobe
remain unchanged. If the Master transmits more than sixteen interval, the CAT24Cxx will not acknowledge the data byte
bytes prior to sending the STOP condition, the address and the Write request will be rejected.
counter ‘wraps around’ to the beginning of page and
Delivery State
previously transmitted data will be overwritten. Once all The CAT24Cxx is shipped erased, i.e., all bytes are FFh.

BUS ACTIVITY: S
T ADDRESS DATA S
A SLAVE T
R BYTE BYTE O
MASTER ADDRESS
T a7 − a 0 d7 − d 0 P

S P

A A A
SLAVE C C C
K K K
* For the CAT24C01 a7 = 0
Figure 6. Byte Write Sequence

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 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

SCL

SDA 8th Bit ACK

Byte n
tWR

STOP START ADDRESS

CONDITION CONDITION

Figure 7. Write Cycle Timing

BUS ACTIVITY: S
T DATA DATA DATA S
A SLAVE ADDRESS BYTE BYTE BYTE T
MASTER R ADDRESS BYTE n n+1 n+P O
T P

S P

A A A A A
SLAVE C C C C C
n=1 K K K K K
P v 15
Figure 8. Page Write Sequence

ADDRESS DATA
BYTE BYTE

1 8 9 1 8
SCL

SDA a7 a0 d7 d0

tSU:WP

WP

tHD:WP
Figure 9. WP Timing

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 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

READ OPERATIONS
Immediate Read CAT24Cxx acknowledges the byte address, the Master
Upon receiving a Slave address with the R/W bit set to ‘1’, device resends the START condition and the slave address,
the CAT24Cxx will interpret this as a request for data this time with the R/W bit set to one. The CAT24Cxx then
residing at the current byte address in memory. The responds with its acknowledge and sends the requested data
CAT24Cxx will acknowledge the Slave address, will byte. The Master device does not acknowledge the data
immediately shift out the data residing at the current address, (NoACK) but will generate a STOP condition (Figure 11).
and will then wait for the Master to respond. If the Master
does not acknowledge the data (NoACK) and then follows Sequential Read
up with a STOP condition (Figure 10), the CAT24Cxx If during a Read session, the Master acknowledges the 1st
returns to Standby mode. data byte, then the CAT24Cxx will continue transmitting
data residing at subsequent locations until the Master
Selective Read responds with a NoACK, followed by a STOP (Figure 12).
Selective Read operations allow the Master device to In contrast to Page Write, during Sequential Read the
select at random any memory location for a read operation. address count will automatically increment to and then
The Master device first performs a ‘dummy’ write operation wrap−around at end of memory (rather than end of page). In
by sending the START condition, slave address and byte the CAT24C01, the internal address count will not wrap
address of the location it wishes to read. After the around at the end of the 128 byte memory space.
N
BUS ACTIVITY: S O
T S
A SLAVE AT
MASTER R ADDRESS CO
T KP

S P

A
SLAVE C D ATA
K BYTE

SCL 8 9

SDA 8th Bit

DATA OUT NO ACK STOP

Figure 10. Immediate Read Sequence and Timing

N
BUS ACTIVITY: S S O
T T S
A SLAVE ADDRESS A SLAVE AT
MASTER R ADDRESS BYTE R ADDRESS CO
T T KP

S S P

A A A
SLAVE C C C D ATA
K K K BYTE

Figure 11. Selective Read Sequence

N
BUS ACTIVITY: O
S
SLAVE A A A AT
MASTER ADDRESS C C C CO
K K K KP

A
SLAVE C D ATA D ATA D ATA D ATA
K BYTE BYTE BYTE BYTE
n n+1 n+2 n+x
Figure 12. Sequential Read Sequence

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 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

PACKAGE DIMENSIONS

PDIP−8, 300 mils

CASE 646AA
ISSUE A

SYMBOL MIN NOM MAX

A 5.33
A1 0.38
A2 2.92 3.30 4.95
b 0.36 0.46 0.56

E1 b2 1.14 1.52 1.78

c 0.20 0.25 0.36
D 9.02 9.27 10.16
E 7.62 7.87 8.25
E1 6.10 6.35 7.11
e 2.54 BSC
eB 7.87 10.92
PIN # 1
IDENTIFICATION L 2.92 3.30 3.80
D

TOP VIEW
E

A2
A

A1

c
b2
L

eB
e b

SIDE VIEW END VIEW

Notes:
(1) All dimensions are in millimeters.
(2) Complies with JEDEC MS-001.

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 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

PACKAGE DIMENSIONS

SOIC 8, 150 mils

CASE 751BD
ISSUE O

SYMBOL MIN NOM MAX

A 1.35 1.75
A1 0.10 0.25
b 0.33 0.51
c 0.19 0.25
E1 E D 4.80 5.00
E 5.80 6.20
E1 3.80 4.00
e 1.27 BSC
h 0.25 0.50
L 0.40 1.27
PIN # 1
IDENTIFICATION θ 0º 8º

TOP VIEW

D h

A1 θ
A

c
e b L

SIDE VIEW END VIEW

Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MS-012.

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 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

PACKAGE DIMENSIONS

TSSOP8, 4.4x3
CASE 948AL
b ISSUE O

SYMBOL MIN NOM MAX

A 1.20
A1 0.05 0.15
A2 0.80 0.90 1.05
b 0.19 0.30
E1 E c 0.09 0.20
D 2.90 3.00 3.10
E 6.30 6.40 6.50
E1 4.30 4.40 4.50
e 0.65 BSC
L 1.00 REF
L1 0.50 0.60 0.75
θ 0º 8º

TOP VIEW

A2 c
A q1

A1 L1
L
SIDE VIEW END VIEW

Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MO-153.

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 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

PACKAGE DIMENSIONS

MSOP 8, 3x3
CASE 846AD
ISSUE O

SYMBOL MIN NOM MAX

A 1.10
A1 0.05 0.10 0.15
A2 0.75 0.85 0.95
b 0.22 0.38
c 0.13 0.23

E E1 D 2.90 3.00 3.10

E 4.80 4.90 5.00
E1 2.90 3.00 3.10
e 0.65 BSC
L 0.40 0.60 0.80
L1 0.95 REF
L2 0.25 BSC
θ 0º 6º

TOP VIEW

A A2
DETAIL A

A1 e b c

SIDE VIEW END VIEW

L2

Notes: L
(1) All dimensions are in millimeters. Angles in degrees. L1
(2) Complies with JEDEC MO-187.
DETAIL A

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 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

PACKAGE DIMENSIONS

TDFN8, 2x3
CASE 511AK
ISSUE A

D A e b

E E2

PIN#1
IDENTIFICATION

A1
PIN#1 INDEX AREA D2 L

TOP VIEW SIDE VIEW BOTTOM VIEW

SYMBOL MIN NOM MAX

A 0.70 0.75 0.80
A1 0.00 0.02 0.05
A2 0.45 0.55 0.65 A2

A3 0.20 REF A3
b 0.20 0.25 0.30
D 1.90 2.00 2.10
D2 1.30 1.40 1.50 FRONT VIEW

E 2.90 3.00 3.10

E2 1.20 1.30 1.40
e 0.50 TYP
L 0.20 0.30 0.40

Notes:
(1) All dimensions are in millimeters.
(2) Complies with JEDEC MO-229.

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 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

PACKAGE DIMENSIONS

TSOT−23, 5 LEAD
CASE 419AE
ISSUE O

SYMBOL MIN NOM MAX

D
A 1.00
e
A1 0.01 0.05 0.10
A2 0.80 0.87 0.90
b 0.30 0.45
c 0.12 0.15 0.20
D 2.90 BSC
E1 E E 2.80 BSC
E1 1.60 BSC
e 0.95 TYP
L 0.30 0.40 0.50
L1 0.60 REF
L2 0.25 BSC
θ 0º 8º
TOP VIEW

A2 A
q

L
b A1 c L2
L1

SIDE VIEW END VIEW

Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MO-193.

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 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

PACKAGE DIMENSIONS

UDFN8, 2x3 EXTENDED PAD

CASE 517AZ
ISSUE O

D A b e

DAP SIZE 1.8 x 1.8

E E2

PIN #1
IDENTIFICATION

A1
PIN #1 INDEX AREA D2

TOP VIEW SIDE VIEW BOTTOM VIEW

SYMBOL MIN NOM MAX

A 0.45 0.50 0.55
A1 0.00 0.02 0.05
A3 0.127 REF
DETAIL A A3 A
b 0.20 0.25 0.30 0.065 REF
D 1.95 2.00 2.05 FRONT VIEW
D2 1.35 1.40 1.45
E 2.95 3.00 3.05
E2 1.25 1.30 1.35
e 0.50 REF
L 0.25 0.30 0.35

0.065 REF
Notes: A3 0.0 - 0.05
Copper Exposed
(1) All dimensions are in millimeters.
(2) Refer JEDEC MO-236/MO-252. DETAIL A

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 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

PACKAGE DIMENSIONS

WLCSP4, 0.86x0.84
CASE 567DC
ISSUE B

È
A B NOTES:
E 1. DIMENSIONING AND TOLERANCING PER ASME
PIN A1 Y14.5M, 1994.

È
REFERENCE 2. CONTROLLING DIMENSION: MILLIMETERS.
3. DATUM C, THE SEATING PLANE, IS DEFINED BY
D THE SPHERICAL CROWNS OF THE CONTACT
2X 0.10 C BALLS.
4. COPLANARITY APPLIES TO SPHERICAL CROWNS
OF THE CONTACT BALLS.
5. DIMENSION b IS MEASURED AT THE MAXIMUM
2X 0.10 C TOP VIEW CONTACT BALL DIAMETER PARALLEL TO DATUM C.

MILLIMETERS
A2 DIM MIN MAX
A A 0.28 0.38
0.10 C A1 0.08 0.12
A2 0.23 REF
b 0.16 0.20
0.05 C D 0.86 BSC
SEATING E 0.84 BSC
NOTE 4 A1 C PLANE e 0.40 BSC
SIDE VIEW NOTE 3

RECOMMENDED
SOLDERING FOOTPRINT*
e A1
4X b e
PACKAGE
OUTLINE
0.10 M C A B
B
NOTE 5
A
4X
1 2 0.40
0.18
BOTTOM VIEW PITCH 0.40
PITCH
DIMENSIONS: MILLIMETERS

*For additional information on our Pb−Free strategy and soldering

details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.

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16
 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

PACKAGE DIMENSIONS

WLCSP5, 0.84x0.86
CASE 567DD
ISSUE B

ÈÈ
A B NOTES:
D 1. DIMENSIONING AND TOLERANCING PER ASME

ÈÈ
PIN A1 Y14.5M, 1994.
REFERENCE 2. CONTROLLING DIMENSION: MILLIMETERS.
3. DATUM C, THE SEATING PLANE, IS DEFINED BY THE
E SPHERICAL CROWNS OF THE CONTACT BALLS.
2X 0.10 C 4. COPLANARITY APPLIES TO SPHERICAL CROWNS
OF THE CONTACT BALLS.
5. DIMENSION b IS MEASURED AT THE MAXIMUM CON-
2X TACT BALL DIAMETER PARALLEL TO DATUM C.
0.10 C
TOP VIEW MILLIMETERS
DIM MIN MAX
A2 A 0.29 0.39
A A1 0.10 0.14
0.10 C A2 0.23 REF
b 0.14 0.18
D 0.84 BSC
0.05 C E 0.86 BSC
SEATING e 0.30 BSC
NOTE 4 A1 C PLANE e1 0.52 BSC
SIDE VIEW NOTE 3

RECOMMENDED
e SOLDERING FOOTPRINT*
5X b e1 A1 PACKAGE
0.10 M C A B OUTLINE
C
NOTE 5 B
A
PIN A1 123
REFERENCE 5X
BOTTOM VIEW 0.52 0.16
PITCH 0.30
PITCH
DIMENSIONS: MILLIMETERS

*For additional information on our Pb−Free strategy and soldering

details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.

http://onsemi.com
17
 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

Ordering Information
CAT24C01 Ordering Information
Specific Package Temperature Lead
Device Order Number Device Marking Type Range (Note 9) Finish Shipping
CAT24C01TDI−GT3 MM TSOT−23−5 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C01VP2I−GT3* EE TDFN−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C01WI−GT3 24C01WI SOIC−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C01WE−GT3 24C01WI SOIC−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C01YI−GT3 C01 TSSOP−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C01YE−GT3 C01 TSSOP−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C01ZI−GT3 ABMK MSOP−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02 Ordering Information (Notes 10, 11)
Specific Package Temperature Lead
Device Order Number Device Marking Type Range (Note 9) Finish Shipping
CAT24C02WI−G 24C02H SOIC−8 Industrial NiPdAu Tube, 100 Units / Tube
CAT24C02WI−GA 24C02H SOIC−8 Industrial NiPdAu Tube, 100 Units / Tube
CAT24C02WI−GT3 24C02H SOIC−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02WI−GT3A 24C02H SOIC−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02WE−GT3 24C02H SOIC−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02WE−GT3A 24C02H SOIC−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02YI−G C02H TSSOP−8 Industrial NiPdAu Tube, 100 Units / Tube
CAT24C02YI−GA C02H TSSOP−8 Industrial NiPdAu Tube, 100 Units / Tube
CAT24C02YI−GT3 C02H TSSOP−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02YI−GT3A C02H TSSOP−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02YE−GT3 C02H TSSOP−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02YE−GT3A C02H TSSOP−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02VP2I−GT3* C1T TDFN−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02VP2IGT3A* C1T TDFN−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02VP2E−GT3* C1T TDFN−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02VP2EGT3A* C1T TDFN−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02ZI−GT3 C1 MSOP−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02ZE−GT3 C1 MSOP−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02ZI−GT3A C1 MSOP−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02ZE−GT3A C1 MSOP−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02TDI−GT3 C1 TSOT−23−5 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02TDE−GT3 C1 TSOT−23−5 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02TDI−GT3A C1 TSOT−23−5 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02TDE−GT3A C1 TSOT−23−5 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02LI−GA 24C02H PDIP−8 Industrial NiPdAu Tube, 50 Units / Tube
CAT24C02LE−GA 24C02H PDIP−8 Extended NiPdAu Tube, 50 Units / Tube
CAT24C02HU4IGT3A C1U UDFN8−EP Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C02HU4EGT3A C1U UDFN8−EP Extended NiPdAu Tape & Reel, 3,000 Units / Reel
9. Industrial temperature range is −40°C to +85°C and Extended temperature range is −40°C to +125°C.
10. Part numbers ending with “A” for the CAT24C02 are for Gresham (Product Rev H) only die.
11. The CAT24C02 ”non−A” Device Order Numbers use Gresham die (Rev H) for date codes, starting August 1st, 2012. Therefore the Specific
Device Marking for these OPNs reflect Rev H die.
* The TDFN (VP2) package is not recommended for new designs.

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18
 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

CAT24C04 Ordering Information

Specific Package Temperature Lead
Device Order Number Device Marking Type Range (Note 12) Finish Shipping
CAT24C04WI−G 24C04K SOIC−8 Industrial NiPdAu Tube, 100 Units / Tube
CAT24C04WI−GT3 24C04K SOIC−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C04WE−GT3 24C04K SOIC−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C04YI−G C04K TSSOP−8 Industrial NiPdAu Tube, 100 Units / Tube
CAT24C04YI−GT3 C04K TSSOP−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C04YE−GT3 C04 TSSOP−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C04VP2I−GT3* C2T TDFN−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C04LI−G 24C04K PDIP−8 Industrial NiPdAu Tube, 50 Units / Tube
CAT24C04LE−G 24C04K PDIP−8 Extended NiPdAu Tube, 50 Units / Tube
CAT24C04ZI−GT3 C2 MSOP−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C04ZE−GT3 C2 MSOP−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C04C4ATR** 4 WLCSP−4 Industrial N/A Tape & Reel, 5,000 Units / Reel
CAT24C04C5ATR** 4 WLCSP−5 Industrial N/A Tape & Reel, 5,000 Units / Reel
CAT24C04TDI−GT3 C2 TSOT−23−5 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C04TDE−GT3 C2 TSOT−23−5 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C04HU4I−GT3 C2U UDFN8−EP Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C04HU4E−GT3 C2U UDFN8−EP Extended NiPdAu Tape & Reel, 3,000 Units / Reel

CAT24C08 Ordering Information

Specific Package Temperature Lead
Device Order Number Device Marking Type Range (Note 12) Finish Shipping
CAT24C08WI−G 24C08K SOIC−8 Industrial NiPdAu Tube, 100 Units / Tube
CAT24C08WI−GT3 24C08K SOIC−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C08WE−GT3 24C08K SOIC−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C08YI−G C08K TSSOP−8 Industrial NiPdAu Tube, 100 Units / Tube
CAT24C08YI−GT3 C08K TSSOP−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C08YE−GT3 C08 TSSOP−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C08VP2I−GT3* C3T TDFN−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C08VP2E−GT3* C3T TDFN−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C08LI−G 24C08K PDIP−8 Industrial NiPdAu Tube, 50 Units / Tube
CAT24C08LE−G 24C08K PDIP−8 Extended NiPdAu Tube, 50 Units / Tube
CAT24C08ZI−GT3 C3 MSOP−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C08ZE−GT3 C3 MSOP−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C08C4ATR** 8 WLCSP−4 Industrial N/A Tape & Reel, 5,000 Units / Reel
CAT24C08C5ATR** 8 WLCSP−5 Industrial N/A Tape & Reel, 5,000 Units / Reel
CAT24C08TDI−GT3 C3 TSOT−23−5 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C08TDE−GT3 C3 TSOT−23−5 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C08HU4I−GT3 C3U UDFN8−EP Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C08HU4E−GT3 C3U UDFN8−EP Extended NiPdAu Tape & Reel, 3,000 Units / Reel
12. Industrial temperature range is −40°C to +85°C and Extended temperature range is −40°C to +125°C.
* The TDFN (VP2) package is not recommended for new designs.
** Contact factory for availability

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19
 CAT24C01, CAT24C02, CAT24C04, CAT24C08, CAT24C16

CAT24C16 Ordering Information

Specific Package Temperature Lead
Device Order Number Device Marking Type Range (Note 13) Finish Shipping
CAT24C16WI−G 24C16K SOIC−8 Industrial NiPdAu Tube, 100 Units / Tube
CAT24C16WI−GT3 24C16K SOIC−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C16WE−GT3 24C16K SOIC−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C16YI−G C16K TSSOP−8 Industrial NiPdAu Tube, 100 Units / Tube
CAT24C16YI−GT3 C16K TSSOP−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C16YE−GT3 C16 TSSOP−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C16VP2I−GT3* C4T TDFN−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C16VP2E−GT3* C4T TDFN−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C16LI−G 24C16K PDIP−8 Industrial NiPdAu Tube, 50 Units / Tube
CAT24C16LE−G 24C16K PDIP−8 Extended NiPdAu Tube, 50 Units / Tube
CAT24C16ZI−GT3 C4 MSOP−8 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C16ZE−GT3 C4 MSOP−8 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C16C4ATR** 6 WLCSP−4 Industrial N/A Tape & Reel, 5,000 Units / Reel
CAT24C16C5ATR** 6 WLCSP−5 Industrial N/A Tape & Reel, 5,000 Units / Reel
CAT24C16TDI−GT3 C4 TSOT−23−5 Industrial NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C16TDE−GT3 C4 TSOT−23−5 Extended NiPdAu Tape & Reel, 3,000 Units / Reel
CAT24C16HU4I−GT3 C4U UDFN8−EP Extended NiPdAu Tape & Reel, 3,000 Units / Reel
13. Industrial temperature range is −40°C to +85°C and Extended temperature range is −40°C to +125°C.
14. All packages are RoHS−compliant (Lead−free, Halogen−free).
15. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
16. For detailed information and a breakdown of device nomenclature and numbering systems, please see the ON Semiconductor Device
Nomenclature document, TND310/D, available at www.onsemi.com
* The TDFN (VP2) package is not recommended for new designs.
** Contact factory for availability

ON Semiconductor is licensed by Philips Corporation to carry the I2C Bus Protocol.

ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks,
copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC
reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any
particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without
limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications
and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC
does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for
surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where
personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and
its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly,
any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture
of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.

PUBLICATION ORDERING INFORMATION

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20