54AC520 Datasheet, PDF (1/10 Pages) National Semiconductor (TI) – 8-Bit Identity Comparator

September 1998
54AC520 • 54ACT520
8-Bit Identity Comparator
General Description
The ’AC/’ACT520 are expandable 8-bit comparators. They
compare two words of up to eight bits each and provide a
LOW output when the two words match bit for bit. The ex-
pansion input I_{A = B} also serves as an active LOW enable in-
put.
Features
n Compares two 8-bit words in 6.5 ns typ
n Expandable to any word length
n 20-pin package
n Outputs source/sink 24 mA
n ’ACT520 has TTL-compatible inputs
n Standard Microcircuit Drawing (SMD)
54AC520: 5962-90916
54ACT520: 5962-89793
Logic Symbols
IEEE/IEC
DS100234-1
Pin Names
A₀– A₇
B₀– B₇
T_{A = B}
O_{A = B}
Description
Word A Inputs
Word B Inputs
Expansion or Enable Input
Identity Output
FACT™ is a trademark of Fairchild Semiconductor Corporation.
© 1998 National Semiconductor Corporation DS100234
DS100234-4
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