IN74HCT163A
P
RESETTABLE
C
OUNTERS
High-Performance Silicon-Gate CMOS
The IN74HCT163A is identical in pinout to the LS/ALS163.
The IN74HCT163 may be used as a level converter for
interfacing TTL or NMOS outputs to High Speed CMOS inputs.
The IN74HCT163A is programmable 4-bit synchronous
counter that feature parallel Load, synchronous Reset, a Carry
Output for cascading and count-enable controls.
The IN74HCT163A is binary counter with synchronous Reset.
•
TTL/NMOS Compatible Input Levels
•
Outputs Directly Interface to CMOS, NMOS, and TTL
•
Operating Voltage Range: 4.5 to 5.5 V
•
Low Input Current: 1.0
µA
LOGIC DIAGRAM
ORDERING INFORMATION
IN74HCT163AN Plastic
IN74HCT163AD SOIC
T
A
= -55° to 125° C for all
packages
PIN ASSIGNMENT
PIN 16 =V
CC
PIN 8 = GND
FUNCTION TABLE
Rese
t
L
H
H
H
H
X
Load
X
L
H
H
H
X
Inputs
Enable Enable
P
T
X
X
X
X
X
L
L
X
H
H
X
X
Clock
Q0
L
P0
Outputs
Q1 Q2
L
L
P1
P2
No change
No change
Count up
No change
Q3
L
P3
Function
Reset to “0”
Preset Data
No count
No count
Count
No count
X=don’t care
P0,P1,P2,P3 = logic level of Data inputs
Ripple Carry Out = Enable T
•
Q0
•
Q1
•
Q2
•
Q3
1
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