1/9

July 2001

s

HIGH SPEED :

s

LOW POWER DISSIPATION:

s

HIGH NOISE IMMUNITY:

s

SYMMETRICAL OUTPUT IMPEDANCE:

s

BALANCED PROPAGATION DELAYS:

s

WIDE OPERATING VOLTAGE RANGE:

s

PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 280

DESCRIPTION

The M74HC280 is an high speed CMOS 9-BIT

PARITY GENERATOR fabricated with silicon gate

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.

Conversely, 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 are equipped with protection circuits

against static discharge and transient excess

voltage.

M74HC280

9 BIT PARITY GENERATOR

PIN CONNECTION AND IEC LOGIC SYMBOLS

ORDER CODES

PACKAGE

TUBE

T & R

DIP

M74HC280B1R

SOP

M74HC280M1R

M74HC280RM13TR

TSSOP

M74HC280TTR

TSSOP

DIP

SOP