54AC280 Datasheet, PDF (1/6 Pages) National Semiconductor (TI) – 9-Bit Parity Generator/Checker

September 1998
54AC280
9-Bit Parity Generator/Checker
General Description
The ’AC280 is a high-speed parity generator/checker that
accepts nine bits of input data and detects whether an even
or an odd number of these inputs is HIGH. If an even number
of inputs is HIGH, the Sum Even output is HIGH. If an odd
number is HIGH, the Sum Even output is LOW. The Sum
Odd output is the complement of the Sum Even output.
Features
n I_CC reduced by 50%
n 9-bit width for memory applications
n Standard Microcircuit Drawing (SMD) 5962-92201
Logic Symbols
Connection Diagrams
Pin Assignment for
DIP and Flatpak
IEEE/IEC
DS100359-1
DS100359-2
Pin Assignment for LCC
Pin
Names
I₀– I₈
∑_O
∑_E
Description
DS100359-4
Data Inputs
Odd Parity Output
Even Parity Output
Truth Table
Number of
HIGH Inputs
I₀– I₈
0, 2, 4, 6, 8
1, 3, 5, 7, 9
H = HIGH Voltage Level
L = LOW Voltage Level
DS100359-3
Outputs
∑ Even
∑ Odd
H
L
L
H
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© 1998 National Semiconductor Corporation DS100359
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