74act521scx-nl Fairchild Semiconductor, 74act521scx-nl Datasheet - Page 2

• Manufacturer Part Number: 74act521scx-nl
• Description: 74ac521 * 74act521 8-bit Identity Comparator
• Manufacturer: Fairchild Semiconductor

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