74AC280
9 BIT PARITY GENERATOR

December 1998
n HIGH SPEED: t
PD
= 4 ns (TYP.) at V
CC
=5V
n LOW POWER DISSIPATION:
ICC =4 µA (MAX.) at TA =25
o
C
n HIGH NOISE IMMUNITY:
VNIH =VNIL =28%VCC (MIN.)
n 50Ω TRANSMISSIONLINE DRIVING
CAPABILITY
n SYMMETRICAL OUTPUT IMPEDANCE:
|IOH|=IOL = 24 mA (MIN)
n BALANCED PROPAGATION DELAYS:
t
PLH
≅ t
PHL
n OPERATING VOLTAGE RANGE:
VCC (OPR)= 2V to 6V
n PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 280
n IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The AC280 is an advanced high-speed CMOS 9
BIT PARITY GENERATOR fabricated with
sub-micron silicon gate and double-layer metal
wiring C
2
MOS technology. It is ideal for low
power applications mantaining high speed
operation similar to equivalent Bipolar Schottky
TTL.
It is composed of nine data inputs (A to I) and
odd/even parity outputs (ΣODD and ΣEVEN). The
nine data inputs control the output conditions.
When the number of high level input is odd,
ΣODD output is kept high and ΣEVEN output low.
Conservely, when the output is even, ΣEVEN
output is kept high and ΣODD low.
The IC generates either odd or even parity
making it flexible application.
The word-length capability is easily expanded by
cascading.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES :
74AC280B 74AC280M
M
(Micro Package)
B
(Plastic Package)
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