TECHNICAL DATA
IN74HC163A
Presettable Counters
High-Performance Silicon-Gate CMOS
The IN74HC163A is identical in pinout to the LS/ALS163. The
device inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LS/ALSTTL outputs.
The IN74HC163A is programmable 4-bit synchronous counter that
feature parallel Load, synchronous Reset, a Carry Output for cascading
and count-enable controls.
The IN74HC163A is binary counter with synchronous Reset.
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Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2.0 to 6.0 V
Low Input Current: 1.0 µA
ORDERING INFORMATION
IN74HC163AN Plastic
High Noise Immunity Characteristic of CMOS Devices
IN74HC163AD SOIC
TA = -55° to 125° C for all packages
LOGIC DIAGRAM
PIN ASSIGNMENT
PIN 16 =VCC
PIN 8 = GND
FUNCTION TABLE
Inputs
Outputs
Reset Load Enable Enable
Clock
Q0
Q1
Q2
Q3
Function
P
X
X
X
L
T
X
X
L
L
H
H
H
H
X
X
L
L
L
L
L
Reset to “0”
Preset Data
No count
No count
Count
P0
P1
P2
P3
H
H
H
X
No change
No change
Count up
X
H
X
H
X
No change
No count
X=don’t care
P0,P1,P2,P3 = logic level of Data inputs
Ripple Carry Out = Enable T • Q0 • Q1 • Q2 • Q3
Rev. 00
IKSEMICON [ IK SEMICON CO., LTD ]
