74161 COUNTER Datasheet

74161 Datasheet, PDF, Equivalent


Part Number

74161

Description

SYNCHRONOUS PRESETTABLE 4-BIT COUNTER

Manufacture

SGS-THOMSON

Total Page 16 Pages
Datasheet
Download 74161 Datasheet


74161
M54/74HC160/161
M54/74HC162/163
SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
. HIGH SPEED
fMAX = 63 MHz (TYP.) AT VCC = 5 V
. LOW POWER DISSIPATION
ICC = 4 µA (MAX.) AT 25 °C
. OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. HIGH NOISE IMMUNITY
VNIH = VNIL = 28 % VCC (MIN.)
. WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V TO 6 V
. PIN AND FUNCTION COMPATIBLE
WITH 54/74LS160 163
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
DESCRIPTION
ORDER CODES :
M54HCXXXF1R M74HCXXXM1R
M74HCXXXB1R M74HCXXXC1R
M54/74HC160 Decade, Asynchronous Clear
M54/74HC161 Binary, Asynchronous Clear
M54/74HC162 Decade, Synchronous Clear
M54/74HC163 Binary, Synchronous Clear
PIN CONNECTIONS (top view)
The M54/74HC160, 161, 162 and 163 are high
speed CMOS SYNCHRONOUS PRESETTABLE
COUNTERS fabricated with silicon gate C2MOS
technology.
They have the same the high speed operation simi-
lar to equivalent LSTTL while maintaining the
CMOS low power dissipation.
The M54/74HC160/162 are BCD Decade counters
and the M54/74HC161/163 are 4 bit binary counter-
s.
The CLOCK input is active on the rising edge. Both
LOAD and CLEAR inputs are active Low.
Presetting of all four IC’s is synchronous on the ris-
ing edge of the CLOCK.
The function on the M54/74HC162/163 is syn-
chronous to CLOCK, while the M54/74HC160/161
counters are cleared asynchronously.
Two enable inputs (TE and PE) and CARRY output
are provided to enable easy cascading of counters,
which facilities easy implementation of N-bit
counters without using external gates.
All inputs are equipped with protection circuits
against static discharge and transient excess volt-
age.
NC =
No Inter-
nal Con-
April 1993
1/16

74161
M54/M74HC160/161/162/163
INPUT AND OUTPUT EQUIVALENT CIRCUIT
IEC LOGIC SYMBOL (HC160)
PIN DESCRIPTION
PIN No
1
2
3, 4, 5, 6
7
10
9
14, 13, 12,
11
15
8
16
SYMBOL
CLEAR
CLOCK
A, B, C, D
ENABLE P
ENABLET
LOAD
QA to QD
CARRY
OUTPUT
GND
VCC
NAME AND FUNCTION
Asynchronous Master
reset
Clock Input (LOW to
HIGH, Edge-triggered)
Data Inputs
Count Enable Input
Count Enable Carry Input
Parallel Enable Input
Flip Flop Outputs
Terminal Count Output
Ground (0V)
Positive Supply Voltage
IEC LOGIC SYMBOL (HC161)
IEC LOGIC SYMBOL (HC162)
IEC LOGIC SYMBOL (HC163)
2/16


Features M54/74HC160/161 M54/74HC162/163 SYNCHRO NOUS PRESETTABLE 4-BIT COUNTER . HIGH SPEED fMAX = 63 MHz (TYP.) AT VCC = 5 V . LOW POWER DISSIPATION ICC = 4 µA (M AX.) AT 25 °C . OUTPUT DRIVE CAPABILIT Y 10 LSTTL LOADS . BALANCED PROPAGATION DELAYS tPLH = tPHL . HIGH NOISE IMMUNI TY VNIH = VNIL = 28 % VCC (MIN.) . WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V . PIN AND FUNCTION COMPATIBLE WITH 54/74LS160 ∼ 163 B1R (Plastic P ackage) F1R (Ceramic Package) M 1R (M icro Package) C1R (Chip Carrier) DESC RIPTION ORDER CODES : M54HCXXXF1R M74H CXXXM1R M74HCXXXB1R M74HCXXXC1R M54/74 HC160 Decade, Asynchronous Clear M54/74 HC161 Binary, Asynchronous Clear M54/74 HC162 Decade, Synchronous Clear M54/74H C163 Binary, Synchronous Clear PIN CON NECTIONS (top view) The M54/74HC160, 1 61, 162 and 163 are high speed CMOS SYN CHRONOUS PRESETTABLE COUNTERS fabricate d with silicon gate C2MOS technology. They have the same the high speed opera tion similar to equivalent LSTTL while maintaining the CMOS low pow.
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