HD74HC194 Datasheet, PDF (3/8 Pages) Hitachi Semiconductor – 4-bit Bidirectional Universal Shift Register

Pin Arrangement
HD74HC194
Clear 1
Shift
Right ₂
Serial-Input
A3
B4
Parallel
Inputs _{C 5}
D6
Shift
Left 7
Serial-Input
GND 8
Timing Diagram
R ^CLR QA
A
QB
B
QC
C
QD
D
CK
L
S1
S0
(Top view)
16 V_CC
15 QA
14 QB
Parallel
13 QC ^Outputs
12 QD
11 Clock
10 S1
Mode Control
9 S0
Clock
Mode S0
Control
Inputs S1
Clear
Serial
R
Data
Inputs L
AH
Parallel B L
Data
Inputs C H
DL
QA
QB
Outputs
QC
QD
Clear Load
Shift Right
Shift Left
Inhibit
Clear
3