MM54HC280 MM74HC280 9-Bit Odd Even Parity Generator Checker
January 1988
MM54HC280 MM74HC280
9-Bit Odd Even Parity Generator Checker
General Description
The MM54HC280 MM74HC280 utilizes advanced silicon-
gate CMOS technology to achieve the high noise immunity
and low power consumption of standard CMOS integrated
circuits It possesses the ability to drive 10 LS-TTL loads
This parity generator checker features odd even outputs to
facilitate operation of either odd or even parity applications
The word length capability is easily expanded by cascading
devices The 54HC 74HC logic family is speed function
and pinout compatible with the standard 54LS 74LS family
All inputs are protected from damage due to static dis-
charge by internal diode clamps to V
CC
and ground
Features
Y
Y
Y
Y
Y
Typical propagation delay 28 ns
Wide power supply range 2V 鈥?6V
Low quiescent current 80
mA
maximum (74HC)
Low input current 1
mA
maximum
Fanout of 10 LS-TTL loads
Connection Diagram
Dual-In-Line Package
TL F 5121 鈥?1
Order Number MM54HC280 or MM74HC280
Function Table
Numbers of Inputs A
thru 1 that are High
0 2 4 6 8
1 3 5 7 9
H
e
high level L
e
low level
Outputs
R
Even
H
L
R
Odd
L
H
C
1995 National Semiconductor Corporation
TL F 5121
RRD-B30M105 Printed in U S A
1
2
3
4
