Rev.3.00, Jul.15.2005, page 1 of 5

HD74LS280

9-bit Odd / Even Parity Generator / Checker

REJ03D0475–0300

Rev.3.00

Jul.15.2005

This parity generator / checker offers the designer a trade-off between reduced power consumption and high

performance. Although the HD74LS280 is implemented without expander inputs, the corresponding function is

provided by the availability of an input at pin 4 and the absence of any internal connection at pin 3.

Features

• Ordering Information

Part Name

Package Type

Package Code

(Previous Code)

Package

Abbreviation

Taping Abbreviation

(Quantity)

HD74LS280P

DILP-14 pin

PRDP0014AB-B

(DP-14AV)

P

—

HD74LS280FPEL

SOP-14 pin (JEITA)

PRSP0014DF-B

(FP-14DAV)

FP

EL (2,000 pcs/reel)

Notes: Please consult the sales office for the above package availability.

Pin Arrangement

(Top view)

GND

1

2

3

4

5

6

7

14

8

9

10

11

12

13

G

H

NC

Input I

A

Σ

Even

Σ

Odd

Σ Odd

F

G

E

E

D

D

B

F

C

C

I

H

Σ Even

A

B

Inputs

Inputs

Outputs

Function Table

Outputs

Number of inputs A through I that are high

Σ Even

Σ Odd

0, 2, 4, 6, 8

H

L

1, 3, 5, 7, 9

L

H