74AC161M STMicroelectronics, 74AC161M Datasheet

Counter ICs Sync Binary Counter

74AC161M

Manufacturer Part Number
74AC161M
Description
Counter ICs Sync Binary Counter
Manufacturer
STMicroelectronics
Datasheet

Specifications of 74AC161M

Logic Family
74AC
Number Of Bits
4
Counting Method
Synchronous
Counting Sequence
Up
Mounting Style
SMD/SMT
Package / Case
SO-16
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

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Part Number
Manufacturer
Quantity
Price
Part Number:
74AC161M
Manufacturer:
ST
0
Part Number:
74AC161MTR
Manufacturer:
ST
0
DESCRIPTION
The 74AC161 is an advanced high-speed CMOS
SYNCRONOUS
fabricated with sub-micron silicon gate and
double-layer metal wiring C
4 bit binary counter with Asynchronous Clear.
The circuit have four fundamental modes of
operation, in order of preference: synchronous
reset, parallel load, count-up and hold. Four
control inputs, (CLEAR), (LOAD), (PE) and (TE),
determine the mode of operation as shown in the
Truth Table. A LOW signal on CLEAR overrides
PIN CONNECTION AND IEC LOGIC SYMBOLS
July 2001
HIGH SPEED:
f
LOW POWER DISSIPATION:
I
HIGH NOISE IMMUNITY:
V
50 TRANSMISSION LINE DRIVING
CAPABILITY
SYMMETRICAL OUTPUT IMPEDANCE:
|I
BALANCED PROPAGATION DELAYS:
t
OPERATING VOLTAGE RANGE:
V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 161
IMPROVED LATCH-UP IMMUNITY
MAX
CC
PLH
OH
NIH
CC
= 8 A(MAX.) at T
| = I
(OPR) = 2V to 6V
= 125MHz (TYP.) at V
= V
t
PHL
OL
NIL
= 24mA (MIN)
= 28 % V
SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
PRESETTABLE
A
CC
=25°C
2
(MIN.)
MOS tecnology. It is a
CC
= 5V
COUNTER
ORDER CODES
counting and parallel loading and sets all outputs
on LOW state. A LOW signal on LOAD overrides
counting and allows information on Parallel Data
inputs to be loaded into the flip-flop on the next
rising edge of CLOCK. With LOAD and CLEAR
HIGH, PE and TE permit counting when both are
HIGH. Conversely, a LOW signal on either PE and
TE inhibits counting.
The CARRY OUTPUT is HIGH when TE is HIGH
and counter is in state 15.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
PACKAGE
TSSOP
SOP
DIP
DIP
74AC161M
74AC161B
TUBE
SOP
74AC161
74AC161MTR
74AC161TTR
TSSOP
T & R
1/13

Related parts for 74AC161M

74AC161M Summary of contents

Page 1

... The CARRY OUTPUT is HIGH when TE is HIGH and counter is in state 15. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. 74AC161 SOP TSSOP TUBE T & R 74AC161B 74AC161M 74AC161MTR 74AC161TTR 1/13 ...

Page 2

INPUT AND OUTPUT EQUIVALENT CIRCUIT TRUTH TABLE INPUTS CLEAR LOAD Don’t Care Logic level ...

Page 3

TIMING CHART 74AC161 3/13 ...

Page 4

ABSOLUTE MAXIMUM RATINGS Symbol V Supply Voltage Input Voltage Output Voltage Input Diode Current Output Diode Current Output Current ...

Page 5

DC SPECIFICATIONS Symbol Parameter V (V) V High Level Input 3.0 IH Voltage 4.5 5.5 V Low Level Input 3.0 IL Voltage 4.5 5.5 V High Level Output 3.0 OH Voltage 4.5 5.5 3.0 4.5 5.5 V Low Level Output ...

Page 6

AC ELECTRICAL CHARACTERISTICS (C Symbol Parameter V ( Propagation Delay 3.3 PLH PHL Time CLOCK Propagation Delay 3.3 PLH PHL Time CLOCK to 5.0 CARRY OUT t t Propagation Delay 3.3 PLH ...

Page 7

CAPACITIVE CHARACTERISTICS Symbol Parameter V (V) C Input Capacitance 5 Power Dissipation 5.0 PD Capacitance (note1 defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without ...

Page 8

WAVEFORM 2: PROPAGATION DELAYS CLEAR MODE (f=1MHz; 50% duty cycle) WAVEFORM 3: PROPAGATION DELAYS PRESET MODE (f=1MHz; 50% duty cycle) 8/13 ...

Page 9

WAVEFORM 4: PROPAGATION DELAYS COUNTABLE MODE (f=1MHz; 50% duty cycle) WAVEFORM 5: PROPAGATION DELAYS CASCADE MODE (f=1MHz; 50% duty cycle) 74AC161 9/13 ...

Page 10

Plastic DIP-16 (0.25) MECHANICAL DATA DIM. MIN. a1 0. 10/13 mm. TYP MAX. MIN. 0.020 1.65 0.030 0.5 0.25 20 8.5 2.54 17.78 7.1 5.1 3.3 1.27 ...

Page 11

SO-16 MECHANICAL DATA mm. DIM. MIN. TYP 0.35 b1 0. 9.8 E 5.8 e 1.27 e3 8.89 F 3.8 G 4 inch MAX. MIN. TYP. 1.75 0.2 ...

Page 12

DIM. MIN 0.05 A2 0.8 b 0.19 c 0.09 D 4.9 E 6 0° PIN 1 IDENTIFICATION 1 12/13 TSSOP16 MECHANICAL DATA mm. TYP MAX. 1.2 0.15 ...

Page 13

... 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 ...

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