M74HC161
SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
s
s
s
s
s
s
s
HIGH SPEED :
f
MAX
= 62 MHz (TYP.) at V
CC
= 6V
LOW POWER DISSIPATION:
I
CC
=4µA(MAX.) at T
A
=25°C
HIGH NOISE IMMUNITY:
V
NIH
= V
NIL
= 28 % V
CC
(MIN.)
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 4mA (MIN)
BALANCED PROPAGATION DELAYS:
t
PLH
≅
t
PHL
WIDE OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 2V to 6V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 161
DIP
SOP
TSSOP
ORDER CODES
PACKAGE
DIP
SOP
TSSOP
TUBE
M74HC161B1R
M74HC161M1R
T&R
M74HC161RM13TR
M74HC161TTR
DESCRIPTION
The M74HC161 is an high speed CMOS
SYNCHRONOUS
4-BIT
BINARY
PRESETTABLE COUNTER fabricated with silicon
gate C
2
MOS technology.
The CLOCK input is active on the rising edge.
Both LOAD and CLEAR inputs are active LOW.
Presetting is synchronous on the rising edge of
the clock, the function is 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
voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
July 2001
1/12
STMICROELECTRONICS [ STMICROELECTRONICS ]
