2

PS2010A 03/09/96

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PI74FCT157T/257T

(25

Ω

Ω

Ω

Ω

Ω Series)PI74FCT2157T/2257T

QUAD 2-INPUT MULTIPLEXER

PI74FCT157/2157T Product Pin Configuration

PI74FCT257/2257T Product Pin Configuration

Inputs

E/OE

S

157/2157 257/2257

HX

X

X

L

Z

LH

X

L

L

L

LH

X

H

H

H

LL

L

X

L

L

LL

H

X

H

H

NOTE:

1.

H = High Voltage Level

X = Don't Care

L = Low Voltage Level

Z = High Impedance

Product Pin Description

Pin Name

Description

Source 0 Data Inputs

Source 1 Data Inputs

E

Enable Input (Active LOW) FCT157/2157

OE

Output Enable (Active LOW) FCT257/2257

S

Select Input

Outputs

GND

Ground

Power

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

S

GND

Vcc

E

16-PIN

Q16

S16

W16

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

S

GND

Vcc

OE

16-PIN

Q16

S16

W16