HD74AC280 Datasheet, PDF (1/9 Pages) Hitachi Semiconductor – 9-bit Parity Generator/Checker

HD74AC280/HD74ACT280
9-bit Parity Generator/Checker
Description
The HD74AC280/HD74ACT280 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
• Outputs Source/Sink 24 mA
• HD74ACT280 has TTL-Cmpatible Inputs
Pin Arrangement
I6 1
I7 2
NC 3
I8 4
ΣE 5
ΣO 6
GND 7
(Top view)
14 VCC
13 I5
12 I4
11 I3
10 I2
9 I1
8 I0