Texas Instruments SN74ALS688DW Handleiding

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SN54ALS688, SN74ALS688

8-BIT IDENTITY COMPARATORS

SDAS228A – JUNE 1982 – REVISED JANUARY 1995

Copyright  1995, Texas Instruments Incorporated

1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

•Compare Two 8-Bit Words

•Totem-Pole Outputs (P = Q)

•′ALS688 Are Identical to ALS521′

•Package Options Include Plastic

Small-Outline (DW) Packages, Ceramic

Chip Carriers (FK), and Standard Plastic (N)

and Ceramic (J) 300-mil DIPs

description

These identity comparators perform comparisons

on two 8-bit binary or BCD words and provide

P = Q outputs. These devices have totem-pole

outputs.

The SN54ALS688 is characterized for operation

over the full military temperature range of –55C°

to 125°C. The SN74ALS688 is characterized for

operation from 0°C to 70C.°

FUNCTION TABLE

INPUTS

OUTPUT

DATA

P, Q

ENABLE

G

OUTPUT

P = Q

P = QLL

P > QLH

P < QLH

X HH

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

G

P0

Q0

P1

Q1

P2

Q2

P3

Q3

GND

VCC

P = Q

Q7

P7

Q6

P6

Q5

P5

Q4

P4

SN54ALS688. . . J PACKAGE

SN74ALS688 ...DW OR N PACKAGE

(TOP VIEW)

32120 19

91011 1213

4

5

6

7

8

18

17

16

15

14

Q7

P7

Q6

P6

Q5

P1

Q1

P2

Q2

P3

SN54ALS688 . . . FK PACKAGE

(TOP VIEW)

Q0

P0

G

Q4

P5P = Q

Q3

GND

P4 V

CC

PRODUCTION DATA information is current as of publication date.

Products conform to specications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Product specificaties