MC74HC161A,
MC74HC163A
Presettable Counters
High–Performance Silicon–Gate CMOS
The MC74HC161A and HC163A are identical in pinout to the
LS161 and LS163. The device inputs are compatible with standard
CMOS outputs; with pull–up resistors, they are compatible with
LSTTL outputs.
The HC161A and HC163A are programmable 4–bit binary counters
with asynchronous and synchronous reset, respectively.
http://onsemi.com
MARKING
DIAGRAMS
16
• Output Drive Capability: 10 LSTTL Loads
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
16
MC74HC16xAN
AWLYYWW
1
PDIP–16
N SUFFIX
CASE 648
1
• Low Input Current: 1.0 mA
• High Noise Immunity Characteristic of CMOS Devices
• In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
16
1
16
• Chip Complexity: 192 FETs or 48 Equivalent Gates
HC16xA
AWLYWW
1
SO–16
D SUFFIX
RESET
CLOCK
1
2
16
15
V
CC
CASE 751B
RIPPLE
CARRY OUT
Q0
3
4
14
13
P0
P1
P2
P3
16
16
Q1
HC
16xA
ALYW
1
5
6
7
8
12
11
10
9
Q2
TSSOP–16
DT SUFFIX
CASE 948F
Q3
1
ENABLE T
LOAD
ENABLE P
GND
x
A
= 1 or 3
= Assembly Location
Figure 1. Pin Assignment
FUNCTION TABLE
L, WL = Wafer Lot
Y, YY = Year
W, WW = Work Week
ORDERING INFORMATION
Inputs
Output
Q
Device
Package
Shipping
Clock Reset* Load Enable P Enable T
MC74HC161AN
MC74HC161AD
PDIP–16
SOIC–16
SOIC–16
TSSOP–16
2000/Box
48/Rail
L
X
L
H
H
H
X
X
H
L
X
X
H
X
L
Reset
Load Preset Data
Count
H
H
H
H
MC74HC161ADR2
MC74HC161ADT
MC74HC161ADTR2
2500/Reel
96/Rail
No Count
No Count
X
TSSOP–16 2500/Reel
*HC163A only. HC161A is an Asynchronous Reset Device
H = high level, L = low level, X = don’t care
MC74HC163AN
MC74HC163AD
PDIP–16
SOIC–16
SOIC–16
TSSOP–16
2000/Box
48/Rail
MC74HC163ADR2
MC74HC163ADT
MC74HC163ADTR2
2500/Reel
96/Rail
TSSOP–16 2500/Reel
Semiconductor Components Industries, LLC, 2001
1
Publication Order Number:
June, 2001 – Rev. 9
MC74HC161A/D