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PI5C3253

Dual 4:1 Mux/DeMux Bus Switch

Features

鈥?Near-Zero propagation delay

鈥?5鈩?switches connect inputs to outputs

鈥?Direct bus connection when switches are ON

鈥?Ultra Low Quiescent Power (0.2碌A(chǔ) Typical)

鈥?Ideally suited for notebook applications

鈥?Pin compatible with 74 series 253 logic devices

鈥?Packaging (Pb-free & Green available):

鈥?16-pin 150-mil wide plastic QSOP (Q)

鈥?16-pin 300-mil wide plastic SOIC (S)

鈥?16-pin 150-mil wide plastic SOIC (W)

鈥?16-pin 173-mil wide plastic TSSOP (L)

Description

Pericom Semiconductor鈥檚 PI5C3253 is a Dual 4:1 Multiplexer/

demultiplexer with three-state outputs that is pinout compatible

with the PI74FCT253T, 74F253, and 74ALS/AS/LS 253. Inputs

can be connected to outputs with low on resistance (5鈩? with no

additional ground bounce noise or propagation delay.

Block Diagram

IA0

IA1

IA2

IA3

IB0

IB1

IB2

IB3

Pin Configuration

EA

S1

IA3

IA2

IA1

IA0

YA

GND

YA

YB

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

VCC

EB

S0

IB3

IB2

IB1

IB0

YB

EA

EB

S0

S1

Truth Table

(1)

Enable

EA

EB

H

X

X

H

L

L

L

L

L

L

L

L

Select

S

1

S

0

X

X

X

X

L

L

L

H

H

L

H

H

YA

Hi-Z

X

IA

0

IA

1

IA

2

IA

3

YB

X

Hi-Z

IB

0

IB

1

IB

2

IB

3

Function

Disable A

Disable B

S1-0 = 0

S1-0 = 1

S1-0 = 2

S1-0 = 3

Pin Description

Pin Name

IAn, IBn

S0鈥?

EA, EB

YA, YB

GND

V

CC

Description

Data Inputs

Select Inputs

Enable

Data Outputs

Ground

Power

Note:

1. H = High Voltage Level, L = Low Voltage Level

1

PS7017C

09/14/04

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