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INDUSTRIALTEMPERATURERANGE

IDT74FST1632861

20-BIT, TWO PORT BUS SWITCH WITH RESISTOR

JUNE 2006

INDUSTRIAL TEMPERATURE RANGE

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

© 2006 Integrated Device Technology, Inc.

DSC-5582/4

FEATURES:

• Bus switches provide zero delay paths

• Low switch on-resistance: 28

Ω

Ω

Ω

Ω

Ω

• TTL-compatible input and output levels

• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using

machine model (C = 200pF, R = 0)

• Hot insertion capability

• Very low power dissipation

• Available in SSOP, TSSOP, and TVSOP packages

FUNCTIONAL BLOCK DIAGRAM

IDT74FST1632861

20-BIT, TWO PORT BUS

SWITCH WITH RESISTOR

DESCRIPTION:

The FST1632861 belongs to IDT's family of Bus switches. Bus switch

devices perform the function of connecting or isolating two ports without

providing any inherent current sink or source capability. They generate

little or no noise of their own while providing a low resistance path for an

external driver. These devices connect input and output ports through an

n-channel FET. When the gate-to-source junction of this FET is adequately

forward-biased, the device conducts and the resistance between input and

output ports is small. With-out adequate bias on the gate-to-source junction

has hot insertion capability.

The FST1632861 bus switch has a built-in 28

Ωseriesresistortoreduce

noise which can result from reflections. This 28

Ω built-in series resistor

eliminates the need for an external terminating resistor.

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OE

2

OE