SN54HC684, SN74HC684

8-BIT MAGNITUDE COMPARATORS

SCLS340B – MARCH 1996 – REVISED MARCH 2003

1

POST OFFICE BOX 655303

LSTTL Loads

SN54HC684 ...J OR W PACKAGE

SN74HC684 . . . DW OR N PACKAGE

(TOP VIEW)

SN54HC684 . . . FK PACKAGE

(TOP VIEW)

32 1 20 19

910 11 12 13

4

5

6

7

8

18

17

16

15

14

Q7

P7

Q6

P6

Q5

P1

Q1

P2

Q2

P3

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

P > Q

P0

Q0

P1

Q1

P2

Q2

P3

Q3

GND

P = Q

Q7

P7

Q6

P6

Q5

P5

Q4

P4

description/ordering information

These magnitude comparators perform comparisons of two 8-bit binary or BCD words. These devices provide

P = Q and P > Q outputs.

ORDERING INFORMATION

TA

PACKAGE†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP – N

Tube

SN74HC684N

SN74HC684N

–40

°C to 85°C

SOIC

DW

Tube

SN74HC684DW

HC684

SOIC – DW

Tape and reel

SN74HC684DWR

HC684

CDIP – J

Tube

SNJ54HC684J

SNJ54HC684J

–55

°C to 125°C

CFP – W

Tube

SNJ54HC684W

SNJ54HC684W

LCCC – FK

Tube

SNJ54HC684FK

SNJ54HC684FK

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines

are available at www.ti.com/sc/package.

FUNCTION TABLE

DATA

INPUTS

OUTPUTS

INPUTS

P, Q

P = Q

P > Q

P = Q

L

H

P > Q

H

L

P < Q

H

H

The P < Q function can be

generated by applying P = Q

and P > Q to a 2-input NAND

gate.

Copyright

 2003, Texas Instruments Incorporated

UNLESS OTHERWISE NOTED this document contains PRODUCTION

DATA information 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.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.