SN54HC253, SN74HC253

DUAL 4-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS

WITH 3-STATE OUTPUTS

SCLS133B – DECEMBER 1982 – REVISED MAY 1997

1

POST OFFICE BOX 655303

15 LSTTL Loads

Line

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

Packages, Ceramic Chip Carriers (FK), and

Standard Plastic (N) and Ceramic (J)

300-mil DIPs

description

Each of these data selectors/multiplexers contain

inverters and drivers to supply full binary decoding

data selection to the AND-OR gates. Separate

output-control inputs are provided for each of the

two 4-line sections.

The 3-state outputs can interface with and drive

data lines of bus-organized systems. With all but

one of the common outputs disabled (at the

high-impedance state), the low impedance of the

single enabled output drives the bus line to a high

or low logic level. Each output has its own

output-enable (OE) input. The outputs are

disabled when their respective OE is high.

The SN54HC253 is characterized for operation over the full military temperature range of –55

°C to 125°C. The

SN74HC253 is characterized for operation from –40

°C to 85 °C.

FUNCTION TABLE

INPUTS

OUTPUT

SELECT†

DATA

OE

OUTPUT

Y

B

A

C0

C1

C2

C3

OE

Y

X

X

X

X

X

X

H

Z

L

LL

XX

X

L

L

L

LH

XX

X

L

H

L

HX

LX

XL

L

L

HX

HX

X

L

H

H

LX

XL

XL

L

H

LX

XH

X

L

H

H

HX

XX

L

L

L

H

H

X

X

X

H

L

H

† Select inputs A and B are common to both sections.

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.

SN54HC253 ...J OR W PACKAGE

SN74HC253 . . . D OR N PACKAGE

(TOP VIEW)

32 1 20 19

910 11 12 13

4

5

6

7

8

18

17

16

15

14

A

2C3

NC

2C2

2C1

1C3

1C2

NC

1C1

1C0

SN54HC253 . . . FK PACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

1OE

B

1C3

1C2

1C1

1C0

1Y

GND

2OE

A

2C3

2C2

2C1

2C0

2Y

NC – No internal connection

Copyright

© 1997, Texas Instruments Incorporated

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.