74act520 Fairchild Semiconductor, 74act520 Datasheet - Page 2

• Manufacturer Part Number: 74act520
• Description: 8-bit Identity Comparator
• Manufacturer: Fairchild Semiconductor

www.fairchildsemi.com
Truth Table
H
L
Note 1: *A
Applications
LOW Voltage Level
HIGH Voltage Level
I
A
0
H
L
L
H
B
B
0
, A
1
Inputs
B
1
, A
A, B
A
A
A
A
2
B (Note 1)
B (Note 1)
B
2
, etc.
Outputs
O
A
H
H
H
L
Parallel Expansion
Ripple Expansion
B
2
Logic Diagram
Please note that this diagram is provided only for the understanding of logic
operations and should not be used to estimate propagation delays.