SN54F280B, SN74F280B

9BIT PARITY GENERATORS/CHECKERS

SDFS008A − D2932, APRIL 1986 − REVISED OCTOBER 1993

Copyright

2−1

POST OFFICE BOX 655303

POST OFFICE BOX 1443

Nine Data Lines

Small-Outline Packages, Ceramic Chip

Carriers, and Standard Plastic and Ceramic

300-mil DIPs

description

These

universal,

monolithic,

9-bit

parity

generators/checkers

feature

odd

and

even

outputs to facilitate operation of either odd or even

parity application. The word-length capability is

easily expanded by cascading.

The SN54F280B is characterized for operation

over the full military temperature range of − 55

°C

to 125

°C. The SN74F280B is characterized for

operation from 0

°C to 70°C.

FUNCTION TABLE

NO. OF INPUTS

A THRU I

OUTPUTS

A THRU I

THAT ARE HIGH

Σ EVEN

Σ ODD

0, 2, 4, 6, 8

H

L

1, 3, 5, 7, 9

L

H

2k

12

E

8

A

9

B

10

C

11

D

13

F

1

G

2

H

4

I

6

5

Σ EVEN

Σ ODD

† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

Pin numbers shown are for the D, J, and N packages.

SN54F280B ...J PACKAGE

SN74F280B ...D OR N PACKAGE

(TOP VIEW)

32

1 20 19

910 11 12 13

4

5

6

7

8

18

17

16

15

14

E

NC

D

NC

C

NC

NC

I

NC

Σ EVEN

SN54F280B ...FK PACKAGE

(TOP VIEW)

NC − No internal connection

1

2

3

4

5

6

7

14

13

12

11

10

9

8

G

H

NC

I

Σ EVEN

Σ ODD

GND

F

E

D

C

B

A

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.