MC74HC161A Datasheet, PDF (1/16 Pages) ON Semiconductor – Presettable Counters

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 pullup resistors, they are compatible with
LSTTL outputs.
The HC161A and HC163A are programmable 4–bit binary counters
with asynchronous and synchronous reset, respectively.
• Output Drive Capability: 10 LSTTL Loads
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA
• High Noise Immunity Characteristic of CMOS Devices
• In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
• Chip Complexity: 192 FETs or 48 Equivalent Gates
ÎÎÎÎÎÎÎÎÎÎÎÎ _Device
Count
Mode
Reset Mode
ÎÎÎÎÎÎÎÎÎÎÎÎ _HC161A
Binary
Asynchronous
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _HC163A
Binary
Synchronous
LOGIC DIAGRAM
PRESET
DATA
INPUTS
P0 ³
P1 ⁴
P2 ⁵
P3 ⁶
CLOCK ²
14 _Q0
13 _Q1
12 _Q2
11 _Q3
BCD OR
BINARY
OUTPUT
15
RIPPLE
CARRY
OUT
16
1
16
1
http://onsemi.com
MARKING
DIAGRAMS
16
PDIP–16
N SUFFIX
CASE 648
MC74HC16xAN
AWLYYWW
1
16
SO–16
D SUFFIX
CASE 751B
HC16xA
AWLYWW
1
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
ORDERING INFORMATION
Device
Package Shipping
MC74HC16xAN
PDIP–16 2000 / Box
MC74HC16xAD
SOIC–16 48 / Rail
MC74HC16xADR2
SOIC–16 2500 / Reel
PIN ASSIGNMENT
RESET 1
CLOCK 2
P0 3
P1 4
P2 5
P3 6
16 VCC
15
RIPPLE
CARRY OUT
14 _Q0
13 Q1
12 Q2
11 Q3
COUNT
ENABLES
RESET ¹
LOAD ⁹
ENABLE P ⁷
ENABLE T ¹⁰
PIN 16 = VCC
PIN 8 = GND
ENABLE P 7
GND 8
10 ENABLE T
9 LOAD
Clock
Reset*
L
H
H
H
H
FUNCTION TABLE
Inputs
Load Enable P Enable T
Output
Q
X
X
L
X
H
H
H
L
H
X
X
Reset
X
Load Preset Data
H
Count
X
No Count
L
No Count
*HC163A only. HC161A is an Asynchronous Reset Device
H = high level, L = low level, X = don’t care
© Semiconductor Components Industries, LLC, 2000
1
March, 2000 – Rev. 8
Publication Order Number:
MC74HC161A/D