1

INDUSTRIALTEMPERATURERANGE

IDT74FST163211

24-BIT BUS SWITCH

JANUARY 2004

INDUSTRIAL TEMPERATURE RANGE

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

© 2004 Integrated Device Technology, Inc.

DSC-3685/3

FEATURES:

• Bus switches provide zero delay paths

• Low switch on-resistance; 5

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)

• Available in TSSOP package

FUNCTIONAL BLOCK DIAGRAM

IDT74FST163211

24-BIT BUS SWITCH

DESCRIPTION:

The FST163211 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. Thus they

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

foranexternaldriver. Thesedevicesconnectinputandoutputportsthrough

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

adequately forward-biased, the device conducts and the resistance be-

tween input and output ports is small. Without adequate bias on the gate-

applied, the device has hot insertion capability.

Thelowon-resistanceandsimplicityoftheconnectionbetweeninputand

output ports reduces the delay in this path to close to zero.

1

1

1

1

2

2

2

2

1

OE

2

OE