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INDUSTRIALTEMPERATURERANGE

IDTQS3VH244

2.5V / 3.3V 8-BIT HIGH BANDWIDTH BUS SWITCH

AUGUST 2002

2002 Integrated Device Technology, Inc.

DSC-5894/9

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IDTQS3VH244

INDUSTRIAL TEMPERATURE RANGE

2.5V / 3.3V 8-BIT HIGH

BANDWIDTH BUS SWITCH

FUNCTIONAL BLOCK DIAGRAM

DESCRIPTION:

The QS3VH244 HotSwitch is a high bandwidth, 8-bit bus switch. The

QS3VH244 hasverylowONresistance,resultinginunder250pspropagation

delay through the switch. The switches can be turned ON under the control

oftheLVTTL-compatiblexGsignalforbidirectionaldataflowwithnoaddeddelay

orgroundbounce. IntheONstate,theswitchescanpasssignalsupto5V. In

theOFFstate,theswitchesofferveryhighimpedenceattheterminals.

Thecombinationofnear-zeropropagationdelay,highOFFimpedence,and

over-voltage tolerance makes the QS3VH244 ideal for high performance

communicationsapplications.

The QS3VH244 is characterized for operation from -40

°C to +85°C.

1G

1

1

1

1

1

1

1

1

2G

2

2

2

2

2

2

2

2

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

APPLICATIONS:

• Hot-swapping

• 10/100 Base-T, Ethernet LAN switch

• Low distortion analog switch

• Replaces mechanical relay

• ATM 25/155 switching

• Bus switching and isolation

FEATURES:

– Isolationunderpower-offconditions

– 5V tolerant in OFF and ON state

• 5V tolerant I/Os

Ω

Ω

Ω

Ω

Ω typical

• Rail-to-rail switching 0 - 5V

• Bidirectional dataflow with near-zero delay: no added ground

bounce

• High bandwidth - up to 500MHz

• LVTTL-compatible control Inputs

• Undershoot Clamp Diodes on all switch and control Inputs

• Low I/O capacitance, 4pF typical

• Available in QSOP and TSSOP packages