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INDUSTRIALTEMPERATURERANGE

IDTQS34XVH245

2.5V / 3.3V 32-BIT HIGH BANDWIDTH BUS SWITCH

2003 Integrated Device Technology, Inc.

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INDUSTRIAL TEMPERATURE RANGE

DESCRIPTION:

The QS34XVH245 HotSwitch is a high bandwidth 32-bit bus switch. The

QS34XVH245 has very low ON resistance, resulting in under 250ps propa-

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

control of individual LVTTL-compatible Output Enable (OEx) signals for

bidirectionaldataflowwithnoaddeddelayorgroundbounce. IntheONstate,

theswitchescanpassupto5V. IntheOFFstate,theswitchesofferveryhigh

impedenceattheterminals.

Thecombinationofnear-zeropropagationdelay,highOFFimpedance,and

over-voltagetolerancemakestheQS34XVH245idealforhighperformance

communicationsapplications.

The QS34XVH245 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

• 10/100 Base-T, Ethernet LAN switch

• Low distortion analog switch

• Replaces mechanical relay

• ATM 25/155 switching

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 80-pin QVSOP package

2.5V / 3.3V 32-BIT HIGH

BANDWIDTH BUS SWITCH

FUNCTIONAL BLOCK DIAGRAM

B0

OE 1

A0

B1

A1

B2

A2

B3

A3

B4

A4

B5

A5

B6

A6

B7

A7

B8

OE 2

A8

B9

A9

B10

A10

B11

A11

B12

A12

B13

A13

B14

A14

B15

A15

OE 3

A16

A 17

A18

A 19

A20

A 21

A22

A 23

OE 4

B16

B 17

B18

B 19

B20

B 21

B22

B 23

A24

A 25

A26

A 27

A28

A 29

A30

A 31

B24

B 25

B26

B 27

B28

B 29

B30

B 31

MARCH 2003

IDTQS34XVH245

PRELIMINARY