ULN2001A, ULN2002A, ULN2003A, ULN2004A, ULQ2003A, ULQ2004A,

HIGH-VOLTAGE HIGH-CURRENT DARLINGTON

The ULN2001A is obsolete
and is no longer supplied. TRANSISTOR ARRAY
SLRS027C – DECEMBER 1976 – REVISED MAY 2002

D 500-mA Rated Collector Current ULN2001A . . . D OR N PACKAGE

(Single Output) ULN2002A . . . N PACKAGE
ULN2003A, ULN2004A . . . D, N, OR NS PACKAGE
D High-Voltage Outputs . . . 50 V ULQ2003A, ULQ2004A . . . D PACKAGE
D Output Clamp Diodes (TOP VIEW)

D Inputs Compatible With Various Types of 1B 1 16 1C

Logic 2B 2 15 2C
D Relay Driver Applications 3B 3 14 3C
D Designed to Be Interchangeable With 4B 4 13 4C
Sprague ULN2001A Series 5B 5 12 5C
D Package Options Include Plastic Small 6B 6 11 6C
Outline (D, NS) Packages, and Plastic DIP 7B 7 10 7C
(N) E 8 9 COM

description
The ULN2001A, ULN2002A, ULN2003A, ULN2004A, ULQ2003A, and ULQ2004A are high-voltage,
high-current Darlington transistor arrays. Each consists of seven npn Darlington pairs that feature high-voltage
outputs with common-cathode clamp diodes for switching inductive loads. The collector-current rating of a
single Darlington pair is 500 mA. The Darlington pairs may be paralleled for higher current capability.
Applications include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line
drivers, and logic buffers. For 100-V (otherwise interchangeable) versions of the ULN2003A and ULN2004A,
see the SN75468 and SN75469, respectively.
The ULN2001A is a general-purpose array and can be used with TTL and CMOS technologies. The ULN2002A
is specifically designed for use with 14-V to 25-V PMOS devices. Each input of this device has a zener diode
and resistor in series to control the input current to a safe limit. The ULN2003A and ULQ2003A have a 2.7-kΩ
series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS devices. The
ULN2004A and ULQ2004A have a 10.5-kΩ series base resistor to allow operation directly from CMOS devices
that use supply voltages of 6 V to 15 V. The required input current of the ULN/ULQ2004A is below that of the
ULN/ULQ2003A, and the required voltage is less than that required by the ULN2002A.

AVAILABLE OPTIONS
PACKAGES

TA SMALL PLASTIC
OUTLINE DIP
(D, NS) (N)
– ULN2002AN
ULN2003AD
ULN2003AN
–20°C to 70°C ULN2003ANS
ULN2004AD
ULN2004AN
ULN2004ANS
ULQ2003AD –
–40°C to 85°C
ULQ2004AD –
The D package is available taped and reeled. Add the suffix R
to device type (e.g., ULN2003ADR). The NS package is only
available taped and reeled.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date. Copyright  2002, Texas Instruments Incorporated
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1

ULN2001A, ULN2002A, ULN2003A, ULN2004A, ULQ2003A, ULQ2004A,
HIGH-VOLTAGE HIGH-CURRENT DARLINGTON
The ULN2001A is obsolete
TRANSISTOR ARRAY and is no longer supplied.
SLRS027C – DECEMBER 1976 – REVISED MAY 2002

logic diagram
9
COM
1 16
1B 1C

2 15
2B 2C

3 14
3B 3C

4 13
4B 4C

5 12
5B 5C

6 11
6B 6C

7 10
7B 7C

schematics (each Darlington pair)

COM COM

Output C 7V
Output C
Input B Input B 10.5 kΩ
7.2 kΩ
E
7.2 kΩ 3 kΩ 3 kΩ E

ULN2001A ULN2002A

COM

RB
Output C
Input B

ULN/ULQ2003A: RB = 2.7 kΩ
ULN/ULQ2004A: RB = 10.5 kΩ 7.2 kΩ 3 kΩ E

ULN2003A, ULN2004A, ULQ2003A, ULQ2004A

All resistor values shown are nominal.

2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

 ULN2001A, ULN2002A, ULN2003A, ULN2004A, ULQ2003A, ULQ2004A,
HIGH-VOLTAGE HIGH-CURRENT DARLINGTON
The ULN2001A is obsolete
and is no longer supplied. TRANSISTOR ARRAY
SLRS027C – DECEMBER 1976 – REVISED MAY 2002

absolute maximum ratings at 25°C free-air temperature (unless otherwise noted)†

Collector-emitter voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V
Clamp diode reverse voltage (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V
Input voltage, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V
Peak collector current (see Figures 14 and 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 mA
Output clamp current, IOK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 mA
Total emitter-terminal current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 2.5 A
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Package thermal impedance, θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W
NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64°C/W
Operating free-air temperature range, TA, ULN200xA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 20°C to 70°C
ULQ200xA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 85°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values are with respect to the emitter/substrate terminal E, unless otherwise noted.
2. The package thermal impedance is calculated in accordance with JESD 51-7.

DISSIPATION RATING TABLE

TA = 25°C DERATING FACTOR TA = 85°C
PACKAGE
POWER RATING ABOVE TA = 25°C POWER RATING
D 950 mW 7.6 mW/°C 494 mW
N 1150 mW 9.2 mW/°C 598 mW

electrical characteristics, TA = 25°C (unless otherwise noted)

TEST ULN2001A ULN2002A
PARAMETER TEST CONDITIONS UNIT
FIGURE MIN TYP MAX MIN TYP MAX
VI(on) On-state input voltage 6 VCE = 2 V, IC = 300 mA 13 V
II = 250 µA, IC = 100 mA 0.9 1.1 0.9 1.1
Collector-emitter
C ll t itt
VCE(sat)
( ) 5 II = 350 µA, IC = 200 mA 1 1.3 1 1.3 V
saturation voltage
II = 500 µA, IC = 350 mA 1.2 1.6 1.2 1.6
VF Clamp forward voltage 8 IF = 350 mA 1.7 2 1.7 2 V
1 VCE = 50 V, II = 0 50 50
ICEX Collector cutoff current VCE = 50 V,, II = 0 100 100 µA
2
TA = 70°C VI = 6 V 500
VCE = 50 V,, µA,
IC = 500 µ
II(off)
I( ff) Off state input current
Off-state 3 50 65 50 65 µA
TA = 70°C
II Input current 4 VI = 17 V 0.82 1.25 mA
VR = 50 V, TA = 70°C 100 100
IR Clamp reverse current 7 µA
VR = 50 V 50 50
Static forward current
hFE 5 VCE = 2 V, IC = 350 mA 1000
transfer ratio
Ci Input capacitance VI = 0, f = 1 MHz 15 25 15 25 pF

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3

ULN2001A, ULN2002A, ULN2003A, ULN2004A, ULQ2003A, ULQ2004A,
HIGH-VOLTAGE HIGH-CURRENT DARLINGTON
The ULN2001A is obsolete
TRANSISTOR ARRAY and is no longer supplied.
SLRS027C – DECEMBER 1976 – REVISED MAY 2002

electrical characteristics, TA = 25°C (unless otherwise noted)

TEST ULN2003A ULN2004A
PARAMETER TEST CONDITIONS UNIT
FIGURE MIN TYP MAX MIN TYP MAX
IC = 125 mA 5
IC = 200 mA 2.4 6
IC = 250 mA 2.7
VI(
I(on)) On state input voltage
On-state 6 VCE = 2 V V
IC = 275 mA 7
IC = 300 mA 3
IC = 350 mA 8
II = 250 µA, IC = 100 mA 0.9 1.1 0.9 1.1
Collector-emitter
C ll t itt
VCE(sat)
( ) 5 II = 350 µA, IC = 200 mA 1 1.3 1 1.3 V
saturation voltage
II = 500 µA, IC = 350 mA 1.2 1.6 1.2 1.6
1 VCE = 50 V, II = 0 50 50
ICEX Collector cutoff current VCE = 50 V,, II = 0 100 100 µA
2
TA = 70°C VI = 1 V 500
VF Clamp forward voltage 8 IF = 350 mA 1.7 2 1.7 2 V
VCE = 50 V,, µA,,
IC = 500 µ
II(off)
I( ff) Off state input current
Off-state 3 50 65 50 65 µA
TA = 70°C
VI = 3.85 V 0.93 1.35
II Input current 4 VI = 5 V 0.35 0.5 mA
VI = 12 V 1 1.45
VR = 50 V 50 50
IR Clamp reverse current 7 µA
VR = 50 V, TA = 70°C 100 100
Ci Input capacitance VI = 0, f = 1 MHz 15 25 15 25 pF

4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

 ULN2001A, ULN2002A, ULN2003A, ULN2004A, ULQ2003A, ULQ2004A,
HIGH-VOLTAGE HIGH-CURRENT DARLINGTON
The ULN2001A is obsolete
and is no longer supplied. TRANSISTOR ARRAY
SLRS027C – DECEMBER 1976 – REVISED MAY 2002

electrical characteristics over recommended operating conditions (unless otherwise noted)

TEST ULQ2003A ULQ2004A
PARAMETER TEST CONDITIONS UNIT
FIGURE MIN TYP MAX MIN TYP MAX
IC = 125 mA 5
IC = 200 mA 2.7 6
IC = 250 mA 2.9
VI(
I(on)) On state input voltage
On-state 6 VCE = 2 V V
IC = 275 mA 7
IC = 300 mA 3
IC = 350 mA 8
II = 250 µA, IC = 100 mA 0.9 1.2 0.9 1.1
Collector-emitter
C ll t itt
VCE(sat)
( ) 5 II = 350 µA, IC = 200 mA 1 1.4 1 1.3 V
saturation voltage
II = 500 µA, IC = 350 mA 1.2 1.7 1.2 1.6
1 VCE = 50 V, II = 0 100 50
ICEX Collector cutoff current II = 0 100 µA
2 VCE = 50 V
VI = 1 V 500
VF Clamp forward voltage 8 IF = 350 mA 1.7 2.2 1.7 2 V
II(off)
I( ff) Off state input current
Off-state 3 VCE = 50 V,
V IC = 500 µA 30 65 50 65 µA
VI = 3.85 V 0.93 1.35
II Input current 4 VI = 5 V 0.35 0.5 mA
VI = 12 V 1 1.45
VR = 50 V, TA = 25°C 100 50
IR Clamp reverse current 7 µA
VR = 50 V 100 100
Ci Input capacitance VI = 0, f = 1 MHz 15 25 15 25 pF

switching characteristics, TA = 25°C

ULN2001A, ULN2002A,
PARAMETER TEST CONDITIONS ULN2003A, ULN2004A UNIT
MIN TYP MAX
tPLH Propagation delay time, low-to-high-level output 0.25 1 µs
See Figure 9
tPHL Propagation delay time, high-to-low-level output 0.25 1 µs
VS = 50 V, IO ≈ 300 mA,
VOH High-level output voltage after switching VS – 20 mV
See Figure 10

switching characteristics over recommended operating conditions (unless otherwise noted)

ULQ2003A, ULQ2004A
PARAMETER TEST CONDITIONS UNIT
MIN TYP MAX
tPLH Propagation delay time, low-to-high-level output 1 10 µs
See Figure 9
tPHL Propagation delay time, high-to-low-level output 1 10 µs
VS = 50 V, IO ≈ 300 mA,
VOH High-level output voltage after switching VS – 500 mV
See Figure 10

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5

ULN2001A, ULN2002A, ULN2003A, ULN2004A, ULQ2003A, ULQ2004A,
HIGH-VOLTAGE HIGH-CURRENT DARLINGTON
The ULN2001A is obsolete
TRANSISTOR ARRAY and is no longer supplied.
SLRS027C – DECEMBER 1976 – REVISED MAY 2002

PARAMETER MEASUREMENT INFORMATION

Open VCE Open VCE

ICEX ICEX
Open VI

Figure 1. ICEX Test Circuit Figure 2. ICEX Test Circuit

Open VCE
Open
II(off) IC
II(on)
VI Open

Figure 3. II(off) Test Circuit Figure 4. II Test Circuit

Open

IC Open
hFE =
II

II VCE IC

VI(on) VCE IC

NOTE: II is fixed for measuring VCE(sat), variable for

measuring hFE.
Figure 5. hFE, VCE(sat) Test Circuit Figure 6. VI(on) Test Circuit

VR

IR

VF IF
Open
Open

Figure 7. IR Test Circuit Figure 8. VF Test Circuit

6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

 ULN2001A, ULN2002A, ULN2003A, ULN2004A, ULQ2003A, ULQ2004A,
HIGH-VOLTAGE HIGH-CURRENT DARLINGTON
The ULN2001A is obsolete
and is no longer supplied. TRANSISTOR ARRAY
SLRS027C – DECEMBER 1976 – REVISED MAY 2002

PARAMETER MEASUREMENT INFORMATION

Input 50% 50%

t PHL t PLH

50% 50%
Output

VOLTAGE WAVEFORMS

Figure 9. Propagation Delay-Time Waveforms

VS

Input
Open 2 mH
ULN2001A only 1N3064
2.7 kΩ 200 Ω
Pulse
Generator Output
(see Note A) ULN2002A
ULN/ULQ2003A CL = 15 pF
ULN/ULQ2004A (see Note B)

TEST CIRCUIT

≤ 5 ns ≤ 10 ns
VIH
Input 90% 90% (see Note C)
1.5 V 1.5 V
10% 10%
40 µs 0V

VOH
Output

VOL
VOLTAGE WAVEFORMS

NOTES: A. The pulse generator has the following characteristics: PRR = 12.5 kHz, ZO = 50 Ω.
B. CL includes probe and jig capacitance.
C. For testing the ULN2001A, the ULN2003A, and the ULQ2003A, VIH = 3 V; for the ULN2002A, VIH = 13 V;
for the ULN2004A and the ULQ2004A, VIH = 8 V.

Figure 10. Latch-Up Test Circuit and Voltage Waveforms

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7

ULN2001A, ULN2002A, ULN2003A, ULN2004A, ULQ2003A, ULQ2004A,
HIGH-VOLTAGE HIGH-CURRENT DARLINGTON
The ULN2001A is obsolete
TRANSISTOR ARRAY and is no longer supplied.
SLRS027C – DECEMBER 1976 – REVISED MAY 2002

TYPICAL CHARACTERISTICS
COLLECTOR-EMITTER COLLECTOR-EMITTER
SATURATION VOLTAGE SATURATION VOLTAGE
vs vs
COLLECTOR CURRENT TOTAL COLLECTOR CURRENT
(ONE DARLINGTON) (TWO DARLINGTONS PARALLELED)
2.5 2.5

VCE(sat) – Collector-Emitter Saturation Voltage – V

VCE(sat) – Collector-Emitter Saturation Voltage – V

TA = 25°C TA = 25°C
II = 250 µA
2 2
II = 250 µA II = 350 µA
II = 350 µA
1.5 II = 500 µA 1.5

II = 500 µA
1 1

0.5 0.5
VCE(sat)
VCE(sat)

0 0
0 100 200 300 400 500 600 700 800 0 100 200 300 400 500 600 700 800
IC – Collector Current – mA IC(tot) – Total Collector Current – mA

Figure 11 Figure 12

COLLECTOR CURRENT
vs
INPUT CURRENT
500
RL = 10 Ω
450
TA = 25°C
C – Collector Current – mA

400
VS = 10 V
350
VS = 8 V
300

250

200

150
IIC

100

50

0
0 25 50 75 100 125 150 175 200
II – Input Current – µA

Figure 13

8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

 ULN2001A, ULN2002A, ULN2003A, ULN2004A, ULQ2003A, ULQ2004A,
HIGH-VOLTAGE HIGH-CURRENT DARLINGTON
The ULN2001A is obsolete
and is no longer supplied. TRANSISTOR ARRAY
SLRS027C – DECEMBER 1976 – REVISED MAY 2002

THERMAL INFORMATION

D PACKAGE N PACKAGE
MAXIMUM COLLECTOR CURRENT MAXIMUM COLLECTOR CURRENT
vs vs
DUTY CYCLE DUTY CYCLE
600 600
C – Maximum Collector Current – mA

C – Maximum Collector Current – mA

500 500
N=2 N=1
N=1 N=3
400 N=4 400
N=4
N=3

300 300 N=5

N=2
N=6
N=6 N=7
200 N=7 200
N=5

100 TA = 70°C 100 TA = 85°C

IIC

N = Number of Outputs IIC N = Number of Outputs

Conducting Simultaneously Conducting Simultaneously
0 0
0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100
Duty Cycle – % Duty Cycle – %

Figure 14 Figure 15

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9

ULN2001A, ULN2002A, ULN2003A, ULN2004A, ULQ2003A, ULQ2004A,
HIGH-VOLTAGE HIGH-CURRENT DARLINGTON
The ULN2001A is obsolete
TRANSISTOR ARRAY and is no longer supplied.
SLRS027C – DECEMBER 1976 – REVISED MAY 2002

APPLICATION INFORMATION

ULN2003A
VSS ULN2002A V VCC ULQ2003A V

1 16 1 16

2 15 2 15

3 14 3 14

4 13 4 13

5 12 5 12

6 11 6 11

7 10 7 10
P-MOS
Output 8 9 8 9

Lamp
TTL Test
Output

Figure 16. P-MOS to Load Figure 17. TTL to Load

ULN2004A ULN2003A
VDD ULQ2004A V VCC ULQ2003A V

1 16 1 16

2 15 2 15

3 14 14
RP 3
4 13 4 13

5 12 5 12

6 11 6 11

7 10 7 10

8 9 8 9
CMOS
Output
TTL
Output

Figure 18. Buffer for Higher Current Loads Figure 19. Use of Pullup Resistors to
Increase Drive Current

10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

 IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,
enhancements, improvements, and other changes to its products and services at any time and to discontinue
any product or service without notice. Customers should obtain the latest relevant information before placing
orders and should verify that such information is current and complete. All products are sold subject to TI’s terms
and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI
deems necessary to support this warranty. Except where mandated by government requirements, testing of all
parameters of each product is not necessarily performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for
their products and applications using TI components. To minimize the risks associated with customer products
and applications, customers should provide adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right,
copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process
in which TI products or services are used. Information published by TI regarding third–party products or services
does not constitute a license from TI to use such products or services or a warranty or endorsement thereof.
Use of such information may require a license from a third party under the patents or other intellectual property
of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of information in TI data books or data sheets is permissible only if reproduction is without
alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction
of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for
such altered documentation.

Resale of TI products or services with statements different from or beyond the parameters stated by TI for that
product or service voids all express and any implied warranties for the associated TI product or service and
is an unfair and deceptive business practice. TI is not responsible or liable for any such statements.

Mailing Address:

Texas Instruments
Post Office Box 655303
Dallas, Texas 75265

Copyright  2002, Texas Instruments Incorporated