54ACT11520, 74ACT11520

8BIT IDENTITY COMPARATORS

SCAS009B − D2957, JULY 1987 − 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

Pullup Resistors on Q Inputs

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. Features

include 20-k

Ω pullup termination resistors on the

Q inputs for analog or switch data and a P = Q

totem-pole output.

The 54ACT11520 is characterized for operation

over the full military temperature range of − 55

°C

to 125

°C. The 74ACT11520 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

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

54ACT11520 ...J PACKAGE

74ACT11520 . . . 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

54ACT11520 . . . FK PACKAGE

(TOP VIEW)

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.

EPIC is a trademark of Texas Instruments Incorporated.