SN54HC266, SN74HC266

QUADRUPLE 2-INPUT EXCLUSIVE-NOR GATES

WITH OPEN-DRAIN OUTPUTS

SCLS135C – DECEMBER 1982 – REVISED MAY 1997

1

POST OFFICE BOX 655303

Small-Outline (D) and Ceramic Flat (W)

Packages, Ceramic Chip Carriers (FK), and

Standard Plastic (N) and Ceramic (J)

300-mil DIPs

description

The ’HC266 are composed of four independent

2-input

exclusive-NOR

gates

and

feature

open-drain outputs. They perform the Boolean

function Y = A

⊗ B or Y = AB + AB in positive logic.

The SN54HC266 is characterized for operation

over the full military temperature range of –55

°C

to 125

°C. The SN74HC266 is characterized for

operation from –40

°C to 85°C.

FUNCTION TABLE

INPUTS

OUTPUT

A

B

Y

L

L

H

L

HL

H

LL

H

H

H

1

1A

2

1B

1Y

3

5

2A

6

2B

2Y

4

8

3A

9

3B

3Y

10

12

4A

13

4B

4Y

11

=1

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

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

logic diagram, each gate (positive logic)

A

B

Y

1

2

3

4

5

6

7

14

13

12

11

10

9

8

1A

1B

1Y

2Y

2A

2B

GND

4B

4A

4Y

3Y

3B

3A

SN54HC266 ...J OR W PACKAGE

SN74HC266 . . . D OR N PACKAGE

(TOP VIEW)

32 1 20 19

910 11 1213

4

5

6

7

8

18

17

16

15

14

4A

NC

4Y

NC

3Y

1Y

NC

2Y

NC

2A

SN54HC266 . . . FK PACKAGE

(TOP VIEW)

NC – No internal connection

Copyright

© 1997, Texas Instruments Incorporated

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.

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.