PI5C3257C 데이터 시트보기 (PDF) - Pericom Semiconductor

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PI5C3257C

Quad 2:1 Mux/Demux BusSwitch with –2V Undershoot Protection

Pericom Semiconductor 

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Quad 2:1 Mux/Demux BusSwitch

with –2V Undershoot Protection

Product Features

• Near zero propagation delay

• 5ohms switches connect inputs to outputs

• Direct bus connection when switches are ON

• Undershoot Protection to –2V (Data Inputs Only)

• Pin compatible with 74 series 257 logic devices

• Packages available:

– 16-pin 150 mil wide plastic QSOP (Q)

– 16-pin 173 mil wide plastic TSSOP (L)

Logic Block Diagram

Product Description

Pericom Semiconductor’s PI5C series of logic circuits are produced

using the Company’s advanced submicron CMOS technology,

achieving industry leading performance.

The PI5C3257C is a Quad 2:1 multiplexer/demultiplexer with three-

state outputs that is pinout and function compatible with the

PI74FCT257T. Inputs can be connected to outputs with low on

resistance (5ohms) with no additional ground bounce noise or

propagation delay.

16-Pin Product Configuration

IA0 IA1 IB0 IB1 IC0 IC1 ID0 ID1

E

S

S1

IA0 2

16

VCC

15 E

IA1 3

14 ID0

YA

4

13

16-Pin

ID1

IB0

5 L,Q 12 YD

IB1 6

11 IC0

YB

7

10 IC1

GND 8

9

YC

YA

YB

YC

YD

Truth Table(1)

E S YA YB YC YD Function

H X Hi-Z Hi-Z Hi-Z Hi-Z Disable

L

L IA0 IB0 IC0 ID0

S=0

L

H

IA1 IB1 IC1 ID1

S=1

Note: 1. H = High Voltage Level

L = Low Voltage Level

Product Pin Description

Pin Name

Description

IAN-IDN

Data Inputs

S

Select Inputs

E

Enable

YA-YD

Data Outputs

GND

Ground

Vcc

Power

NC

No Connect

1

PS8513 02/21/01

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