HCF4033B

DECADE COUNTER/DIVIDER WITH DECODED

7-SEGMENT DISPLAY OUTPUT AND RIPPLE BLANKING

■ COUNTER AND 7-SEGMENT DECODING IN

ONE PACKAGE
■ EASILY INTERFACED WITH 7-SEGMENT
DISPLAY TYPES
■ FULLY STATIC COUNTER OPERATION : DC
TO 6MHz (Typ.) AT VDD = 10V
■ IDEAL FOR LOW POWER DISPLAYS DIP SOP
■ RIPPLE BLANKING AND LAMP TEST
■ QUIESCENT CURRENT SPECIF. UP TO 20V
■ STANDARDIZED SYMMETRICAL OUTPUT ORDER CODES
CHARACTERISTICS PACKAGE TUBE T&R
■ INPUT LEAKAGE CURRENT DIP HCF4033BEY
II = 100nA (MAX) AT VDD = 18V TA = 25°C SOP HCF4033BM1 HCF4033M013TR
■ 100% TESTED FOR QUIESCENT CURRENT
■ MEETS ALL REQUIREMENTS OF JEDEC
JESD13B " STANDARD SPECIFICATIONS important. This device has CLOCK, RESET,
FOR DESCRIPTION OF B SERIES CMOS CLOCK INHIBIT, RIPPLE BLANKING, LAMP
DEVICES" TEST input, CARRY OUT, RIPPLE BLANKING
and 7 DECODED outputs (a to g).
DESCRIPTION A high RESET signal clears the decade counter to
The HCF4033B is a monolithic integrated circuit its zero count. The counter is advanced one count
fabricated in Metal Oxide Semiconductor at the positive clock signal transition if the CLOCK
technology available in DIP and SOP packages. INHIBIT signal is low. Counter advancement via
The HCF4033B consists of a 5-stages Johnson the clock line is inhibited when the CLOCK
decade counter and an output decoder which INHIBIT signal is high. Antilock gating is provided
converts the Johnson code to a 7 segment on the JOHNSON counter, thus assuring proper
decoded output for driving one stage in a counting sequence. The CARRY-OUT (COUT)
numerical display. This device is particularly signal completes one cycle every ten CLOCK
advantageous in display applications where low INPUT cycles and is used to clock the succeeding
power dissipation and/or low package count are decade directly in a multi-decade counting chain.

PIN CONNECTION

September 2001 1/11

HCF4033B

The seven decoded outputs (a, b, c, d, e, f, g) HCF4033B associated with the least significant bit
illuminate the proper segments in a seven is connected to a low level voltage and the RBO of
segment display device used for representing the that HCF4033B is connected to the RBI terminal
decimal numbers 0 to 9. The 7-segment outputs of the HCF4033B in the next more significant bit
go high on selection. This device has provisions position. Again, this procedure is continued for all
for automating blanking of the non-significant HCF4033B’s on the fraction side of the display. In
zeros in a multi digit decimal number which results a purely fractional number the zero immediately
in a easily readable display consistent with normal preceding the decimal point can be displayed by
writing practice. For example, the number connecting the RBI of that stage to a high level
0050.07000 in an eight digit display would be voltage (instead of to the RBO of the next more
significant stage). For example : optional zero →
displayed as 50.07. Zero suppression on the
0.7346. Likewise, the zero in a number such as
integer side is obtained by connecting the RBI
763.0 can be displayed by connecting the RBI of
terminal of the HCF4033B associated with the the HCF4033B associated with it to a high level
most significant digit in the display to a low level voltage. Ripple blanking of non-significant zeros
voltage and connecting the RBO terminal of that provides an appreciable savings in display power.
stage to the RBI terminal of the HCF4033B in the The HCF4033B has a LAMP TEST input which,
next lower significant position in the display. This when connected to a high level voltage, overrides
procedure is continued for each succeeding normal decoder operation and enables a check to
HCF4033B on the integer side of the display. On be made on possible display malfunctions by
the fraction side of the display the RBI of the putting the seven outputs in the high state.
INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION

1 CLOCK Clock Input
10, 12, 13, 9, 7 - Segments Decoded
a to g
11, 6, 7 Outputs
CLOCK
2 Clock Inhibit Input
INHIBIT
15 RESET Reset Input
RIPPLE
3 BLANKING Ripple Blanking Input
IN
5 CARRY OUT Carry Out Output
RIPPLE
4 BLANKING Ripple Blanking Output
OUT
14 LAMP TEST Lamp Test Input
8 VSS Negative Supply Voltage
16 VDD Positive Supply Voltage

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 HCF4033B

FUNCTIONAL DIAGRAM

LOGIC DIAGRAM

3/11
HCF4033B

TIMING CHART

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

VDD Supply Voltage -0.5 to +22 V
VI DC Input Voltage -0.5 to VDD + 0.5 V
II DC Input Current ± 10 mA
PD Power Dissipation per Package 200 mW
Power Dissipation per Output Transistor 100 mW
Top Operating Temperature -55 to +125 °C
Tstg Storage Temperature -65 to +150 °C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
All voltage values are referred to VSS pin voltage.

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Value Unit

VDD Supply Voltage 3 to 20 V
VI Input Voltage 0 to VDD V
Top Operating Temperature -55 to 125 °C

4/11
 HCF4033B

DC SPECIFICATIONS

Test Conditions Value

Symbol Parameter IO VDD TA = 25°C -40 to 85°C -55 to 125°C Unit
VI VO
(V) (V) (µA) (V)
Min. Typ. Max. Min. Max. Min. Max.
IL Quiescent Current 0/5 5 0.04 5 150 150
0/10 10 0.04 10 300 300
µA
0/15 15 0.04 20 600 600
0/20 20 0.08 100 3000 3000
VOH High Level Output 0/5 <1 5 4.95 4.95 4.95
Voltage 0/10 <1 10 9.95 9.95 9.95 V
0/15 <1 15 14.95 14.95 14.95
VOL Low Level Output 5/0 <1 5 0.05 0.05 0.05
Voltage 10/0 <1 10 0.05 0.05 0.05 V
15/0 <1 15 0.05 0.05 0.05
VIH High Level Input 0.5/4.5 <1 5 3.5 3.5 3.5
Voltage 1/9 <1 10 7 7 7 V
1.5/18.5 <1 15 11 11 11
VIL Low Level Input 0.5/4.5 <1 5 1.5 1.5 1.5
Voltage 9/1 <1 10 3 3 3 V
1.5/18.5 <1 15 4 4 4
IOH Output Drive 0/5 2.5 5 -1.36 -3.2 -1.1 -1.1
Current 0/5 4.6 5 -0.44 -1 -0.36 -0.36
mA
0/10 9.5 10 -1.1 -2.6 -0.9 -0.9
0/15 13.5 15 -3.0 -6.8 -2.4 -2.4
IOL Output Sink 0/5 0.4 5 0.44 1 0.36 0.36
Current 0/10 0.5 10 1.1 2.6 0.9 0.9 mA
0/15 1.5 15 3.0 6.8 2.4 2.4
II Input Leakage
0/18 any input 18 ±10-5 ±0.1 ±1 ±1 µA
Current
CI Input Capacitance any input 5 7.5 pF
The Noise Margin for both "1" and "0" level is: 1V min. with VDD =5V, 2V min. with VDD=10V, 2.5V min. with VDD=15V

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HCF4033B

DYNAMIC ELECTRICAL CHARACTERISTICS (Tamb = 25°C, CL = 50pF, RL = 200KΩ, tr = tf = 20 ns)

Test Condition Value (*) Unit

Symbol Parameter
VDD (V) Min. Typ. Max.
CLOCKED OPERATION
tPLH tPHL Propagation Delay Time 5 250 500
(Carry Out Line) 10 100 200 ns
15 75 150
tPLH tPHL Propagation Delay Time 5 350 700
(Decoded Out Lines) 10 125 250 ns
15 90 180
tTHL tTLH Transition Time 5 100 200
(Carry Out Line) 10 50 100 ns
15 25 50
fCL (1) Maximum Clock Input 5 2.5 5
Frequency 10 5.5 11 MHz
15 8 16
tWC Clock Pulse Width 5 110 260
10 50 100 ns
15 40 80
tr , tf Clock Input Rise or Fall 5
Time 10 Unlimited µs
15
RESET OPERATION
tPLH tPHL Propagation Delay Time 5 275 550
(Carry Out Line) 10 120 240 ns
15 80 160
tPLH tPHL Propagation Delay Time 5 300 600
(Decoded Out Lines) 10 125 250 ns
15 90 180
tWR Reset Pulse Widht 5 100 120
10 50 100 ns
15 25 50
trem Reset Removal Time 5 0 30
10 0 15 ns
15 0 10
(*) Typical temperature coefficient for all VDD value is 0.3 %/°C.
(1) Measured with respect to carry output line.

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 HCF4033B

TYPICAL APPLICATIONS

Interfacing with Filament Fluorescent Display Detail of Typical Flip-flop Stage

Interfacing with LED Displays (display common Interfacing with LED Displays (display common
anode) cathode)

Interfacing with NIXIE Tube

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HCF4033B

TEST CIRCUIT

CL = 50pF or equivalent (includes jig and probe capacitance)

RL = 200KΩ
RT = ZOUT of pulse generator (typically 50Ω)

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 HCF4033B

Plastic DIP-16 (0.25) MECHANICAL DATA

mm. inch
DIM.
MIN. TYP MAX. MIN. TYP. MAX.

a1 0.51 0.020

B 0.77 1.65 0.030 0.065

b 0.5 0.020

b1 0.25 0.010

D 20 0.787

E 8.5 0.335

e 2.54 0.100

e3 17.78 0.700

F 7.1 0.280

I 5.1 0.201

L 3.3 0.130

Z 1.27 0.050

P001C

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HCF4033B

SO-16 MECHANICAL DATA

mm. inch
DIM.
MIN. TYP MAX. MIN. TYP. MAX.
A 1.75 0.068
a1 0.1 0.2 0.003 0.007
a2 1.65 0.064
b 0.35 0.46 0.013 0.018
b1 0.19 0.25 0.007 0.010
C 0.5 0.019
c1 45° (typ.)
D 9.8 10 0.385 0.393
E 5.8 6.2 0.228 0.244
e 1.27 0.050
e3 8.89 0.350
F 3.8 4.0 0.149 0.157
G 4.6 5.3 0.181 0.208
L 0.5 1.27 0.019 0.050
M 0.62 0.024
S 8° (max.)

PO13H

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 HCF4033B

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consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
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