54ACT11521, 74ACT11521

8BIT IDENTITY COMPARATORS

SCAS023A − D2957, JULY 1978 − REVISED APRIL 1993

POST OFFICE BOX 655303

POST OFFICE BOX 1443

Copyright

2−1

PCB Layout

Minimize High-Speed Switching Noise

CMOS) 1-

mm Process

at 125

°C

Outline Packages, Plastic Shrink

Small-Outline Packages, Ceramic Chip

Carriers, and Standard Plastic and Ceramic

300-mil DIPs

description

These identity comparators perform comparisons

on two 8-bit binary or BCD words. Also included

is a P = Q totem-pole output.

The 54ACT11521 is characterized for operation

over the full military temperature range of − 55

°C

to 125

°C. The 74ACT11521 is characterized for

operation from − 40

°C to 85°C.

FUNCTION TABLE

INPUTS

OUTPUT

DATA

P, Q

ENABLE

G

OUTPUT

P=Q

P = Q

L

L

P > Q

LH

P < Q

LH

X

H

H

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.

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

Q1

P1

Q0

P0

GND

P = Q

G7

P7

Q6

P6

G

P2

Q2

P3

G3

P4

Q4

P5

Q5

54ACT11521 ...J PACKAGE

74ACT11521 . . . DB, DW OR N PACKAGE

(TOP VIEW)

3

2

1 20 19

910 11 12 13

4

5

6

7

8

18

17

16

15

14

Q4

P5

Q5

P6

Q6

P2

G

Q1

P1

Q0

54ACT11521 . . . FK PACKAGE

(TOP VIEW)

EPIC is a trademark of Texas Instruments Incorporated.