4-130

FAST AND LS TTL DATA

QUAD 2-INPUT MULTIPLEXER

WITH 3-STATE OUTPUTS

The MC74F258A is a quad 2-input multiplexer with 3-state outputs. Four

bits of data from two sources can be selected using a common Data Select

input. The four outputs present the selected data in the complement (inverted)

form. The outputs may be switched to a high impedance state with a HIGH

on the common Output Enable (OE) input, allowing the outputs to interface di-

rectly with bus-oriented systems.

CONNECTION DIAGRAM (TOP VIEW)

15

16

14

13

12

11

10

2

1

3

4

5

6

7

VCC

9

8

OE

I0c

I1c

Zc

I0d

I1d

Zd

S

I0a

I1a

Za

I0b

I1b

Zb

GND

LOGIC DIAGRAM

I0a

I1a

I0b

I1b

I0C

I1b

I1C

I0D

S

I1C

Za

Zb

Zd

Zc

OE

FAST

™ SCHOTTKY TTL

QUAD 2-INPUT MULTIPLEXER

WITH 3-STATE OUTPUTS

MC74F258A

J SUFFIX

CERAMIC

CASE 620-09

N SUFFIX

PLASTIC

CASE 648-08

16

1

16

1

ORDERING INFORMATION

MC54FXXXAJ

Ceramic

MC74FXXXAN Plastic

MC74FXXXAD SOIC

16

1

D SUFFIX

SOIC

CASE 751B-03

LOGIC SYMBOL

12

13

14

15

2

3

4

7

5

6

11

10

9

Za

Zb

Zc

Zd

I1a

I0a

OE

I0c

I1c

I1d

I0d

I0b

I1b

1

S

VCC = PIN 16

GND = PIN 8