mm74c165 Fairchild Semiconductor, mm74c165 Datasheet - Page 2

• Manufacturer Part Number: mm74c165
• Description: Parallel-load 8-bit Shift Register
• Manufacturer: Fairchild Semiconductor

www.fairchildsemi.com
Block Diagrams
*Please look into Section 8, Appendix D for availability of various package types.
Truth Table
X
H
L
P0 thru P7
Q0 thru Q6
V
Clock transition from V
Don’t Care
V
IN(0)
IN(1)
Data present (and loaded into) parallel inputs
Internal flip-flop outputs
Parallel Load
Enable
Shift (with Ds)
Shift (with Ds)
Hold (Disable)
State
IN(0)
to V
IN(1)
PL
H
H
H
H
L
Clock1
X
L
(as enable)
Clock2
Inputs
X
H
L
L
L
Ds
2
X
X
H
X
L
P0 thru P7
P0…P7
X
X
X
X
Q0
P0
P0
H
L
L
Internal
Q1
P1
P1
P0
H
H
Q7
P7
P7
P6
P5
P5
Outputs
Q7
P7
P7
P6
P5
P5