54AC11253, 74AC11253

DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS

WITH 3-STATE OUTPUTS

SCAS041A – MAY 1988 – REVISED APRIL 1993

POST OFFICE BOX 655303

Copyright

2–1

One Line

PCB Layout

Minimize High-Speed Switching Noise

CMOS) 1-

mm Process

Outline Packages, Ceramic Chip Carriers,

and Standard Plastic and Ceramic 300-mil

DIPs

description

Each

of

these

data

selectors/multiplexers

contains 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 four-line sections.

The three-state outputs can interface with and

drive data lines of bus-organized systems. With

all but one of the common outputs disabled (at a

high-impedance state), the low-impedance of the

single enabled output will drive the bus line to a

high or low logic level. Each output has its own

strobe (G). The output is disabled when its strobe

is high.

The 54AC11253 is characterized for operation

over the full military temperature range of – 55

°C

to 125

°C. The 74AC11253 is characterized for

operation from – 40

°C to 85°C.

FUNCTION TABLE

SELECT

INPUTS

DATA INPUTS

OUTPUT

CONTROL

OUTPUT

Y

B

A

C0

C1

C2

C3

G

Y

X

X

X

X

X

X

H

Z

L

LL

XXX

L

L

L

LH

XXX

L

H

L

HX

LX

X

L

L

L

HX

HX

X

L

H

H

LX

XLX

L

L

H

LX

XHX

L

H

H

HX

XX

L

L

L

H

H

X

X

X

H

L

H

Address inputs A and B are common to both sections.

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

A

B

1Y

GND

2Y

1G

2G

2C3

1C0

1C1

1C2

1C3

2C0

2C1

2C2

(TOP VIEW)

3

2

1 20 19

910 11 12 13

4

5

6

7

8

18

17

16

15

14

2C1

2C2

NC

2C3

2G

1C1

1C0

NC

A

B

54AC11253 . . . FK PACKAGE

(TOP VIEW)

NC – No internal connection

2Y

1Y

5

3

2C2

2C1

2C0

2G

1C3

1C2

1C1

1G

B

A

9

10

11

7

13

14

15

6

2

1

EN

1

0

16

2C3

8

0

1

2

3

MUX

G

0

3

† This symbol is in accordance with ANSI/IEEE Std 91-1984

and IEC Publication 617-12.

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

1C0

54AC11253 . . . J PACKAGE

74AC11253 ...D OR N PACKAGE

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.