1

PS8512

03/14/01

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4-Bit BusSwitch with

–2V Undershoot Protection

ProductDescription

PericomSemiconductor’sPI5Cseriesoflogiccircuitsareproduced

using the Company’s advanced submicron CMOS technology,

achieving industry leading performance.

The PI5C3125C and PI5C3126C are 5V, 4-bit, 2-port bus switches.

They are intended for PCI Hot-Plug applications. Industry leading

advantages include a propagation delay of 250ps, resulting from its

5-ohm channel resistance and low I/O capacitance. The A-ports

switch data to B outputs and are bidirectional. The PI5C3125C

devicehasactiveLOWenables,andthePI5C3126ChasactiveHIGH

enables.

The A-port can handle up to –2V undershoot when the switch is

disabled.

ProductFeatures

• Undershoot protection on A port only: –2V

• Direct bus connection when switches are ON

• IndustrialOperationTemperature:–40°Cto+85°C

• Near zero propagation delay

• LowChannelONCapacitance:14pFmax.

• Packagesavailable:

–14-pin173milwideplasticTSSOP(L)

–14-pin150milwideplasticSOIC(W)

–16-pin150milwideplasticQSOP(Q)

PI5C3125CLogicBlockDiagram

PI5C3126CLogicBlockDiagram

BE0

A0

B0

BE1

A1

B1

BE2

A2

B2

BE3

A3

B3

BE0

A0

B0

BE1

A1

B1

BE2

A2

B2

BE3

A3

B3

PI5C3125C

PI5C3126C

Applications

• PCI Hot Plugging for live insertion

• Memory bank sharing