HD74LS163A Datasheet, PDF (2/12 Pages) Hitachi Semiconductor – Synchronous 4-bit Binary Counters(synchronous clear)

HD74LS163A
Pin Arrangement
Clear 1
Clock ²
A3
B4
Data
Inputs _{C 5}
D6
Enable P ⁷
GND 8
Block Diagram
Clock
Clear
Load
P
Enable
T
A
B
CLR
CK ^Ripple
Carry
A
QA
B
QB
C
QC
D
QD
P
T
Load
(Top view)
16 V_CC
15
Ripple
Carry Output
14 _QA
13 _QB
Outputs
12 _QC
11 _QD
10 _{Enable T}
9 _Load
DQ
CK
Q
Output
Q_A
DQ
CK
Q
Output
QB
Data
Inputs
C
DQ
CK
Q
Output
Q^C
D
Rev.2.00, Feb.18.2005, page 2 of 11
DQ
CK
Q
Output
QD
Ripple
Carry
Output