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PI5C3245

8-Bit, 2-Port Bus Switch

Pericom Semiconductor 

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8-Bit, 2-Port Bus Switch

Features

• Near-Zero propagation delay

• 5-ohm switches connect inputs to outputs

• Direct bus connection when switches are on

• Ultra Low Quiescent Power (0.2μA typical)

– Ideally suited for notebook applications

• Pin compatible with 74 series 245 logic devices

• Packaging (Pb-free & Green available):

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

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

– 20-pin 300-mil wide plastic SOIC (S)

Description

Pericom Semiconductor’s PI5C3245 is a 8-bit, 2-port bus switch

designed with a low On-Resistance (5-ohm) allowing inputs to be

connected directly to outputs. The bus switch creates no additional

propagational delay or additional ground bounce noise. The switches

are turned on by the Bus Enable (BE) input signal. The pinout is

compatible with PI74FCT245T (Octal Bidirectional Transceiver).

Block Diagram

Pin Configuration

NC 1

20 VCC

A0

B0

A0 2

19 BE

A1 3

18 B0

A2 4

17 B1

A7

B7

A3 5

A4 6

16 B2

15 B3

A5 7

14 B4

A6 8

13 B5

A7 9

12 B6

BE

GND 10

11 B7

Truth Table(1)

Function

BE A0–7

Disconnect

H Hi-Z

Connect

L B0–7

Note:

1. H = High Voltage Level

L = Low Voltage Level

Hi-Z = High Impedance

Pin Description

Pin Name

BE

A0–7

B0–7

GND

VCC

Description

Bus Enable Input (Active LOW)

Bus A

Bus B

Ground

Power

06-0239

1

PS7015D 05/11/06

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