1

PS7014C

09/2804

Description:

Pericom Semiconductor’s PI5C3244 features a set of eight bus

switches which is pinout and function compatible with the

PI74FCT244T, 74F244, and 74ALS/AS/LS 244 8-bit drivers. Two

enable signals (BEn) turn the switches on similar to the enable

signals of the 244. The bus switch creates no additional propagation

delay or ground bounce noise.

1A,1B

2A,2B

H

H

Disconnect

Disconnect

L

H

1A = 1B

Disconnect

H

L

Disconnect

2A = 2B

L

L

1A = 1B

2A = 2B

Block Diagram

PinDescription

Pin Name

Description

BEn

Bus Output Enable (Active LOW)

Bus A

Bus B

GND

Ground

Power

PinConfiguration

PI5C3244

8-Bit, 2-Port Switch

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Features:

• Near-Zero propagation delay

• 5-ohm switches connect inputs to outputs when enabled

• Direct bus connection when switches are ON

• Ultra Low Quiescent Power (0.2µA Typical)

– Ideally suited for notebook applications

• Pin compatible with 74 Series 244 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)

Note: 1. H = High Voltage Level

L = Low Voltage Level

120

219

1

1

318

2

2

417

1

1

516

2

2

615

1

1

714

2

2

813

1

1

912

2

2

10

11

GND