1

INDUSTRIAL TEMPERATURE RANGE

IDTQS3VH257

2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH

FEBRUARY 2014

2014 Integrated Device Technology, Inc.

DSC-5596/15

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IDTQS3VH257

INDUSTRIAL TEMPERATURE RANGE

2.5V/3.3V QUAD 2:1 MUX/DEMUX

HIGH BANDWIDTH BUS SWITCH

FUNCTIONAL BLOCK DIAGRAM

DESCRIPTION:

The QS3VH257 HotSwitch Quad 2:1 multiplexer/demultiplexer is a high

bandwidth bus switch. The QS3VH257 has very low ON resistance,

resulting in under 250ps propagation delay through the switch. The Select

(S) input controls the data flow. The multiplexers/demultiplexers are

enabled when the Enable (E) input is low. In the ON state, the switches can

pass signals up to 5V. In the OFF state, the switches offer very high

impedence at the terminals.

The combination of near-zero propagation delay, high OFF impedance,

and over-voltage tolerance makes the QS3VH257 ideal for high perfor-

mance communication applications.

The QS3VH257 is characterized for operation from -40

°C to +85°C.

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

APPLICATIONS:

• Hot-swapping

• Multiplexing/demultiplexing

• Low distortion analog switch

• Replaces mechanical relay

• ATM 25/155 switching

FEATURES:

– Isolation under power-off conditions

– 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, SOIC, and TSSOP packages

B

C

D

A

B

B

C

C

D

D

I1

I0

I1

I0

I1

I0

I1

Y

Y

Y

S

E