1

PS8690A

09/22/04

Features

• Low crosstalk: –27dB @ 250MHz

• Near-Zero propagation delay: 250ps

• Switching speed: 9ns

• Channel On capacitance: 9pF (typical)

• ESD>2000V . . . Human Body Model

• >350 MHz bandwidth (or data frequency)

• Packaging (Pb-free & Green available)

16-pin 150 mil wide plastic QSOP (Q)

16-pin 173 mil wide plastic TSSOP(L)

Applications

• Dual Physical Layer Device sharing to one interface

connector

• Routes signals for 10/100 Mbit Ethernet

Description

PericomSemiconductor’s PI3Lseriesof logiccircuitsareproduced

using the Company’s advanced sub-micron CMOS technology,

achieving industry leading performance.

The PI3L110 is a 8- to 4-bit multiplexer/demultiplexer LAN

Switch with Hi-Z outputs. Industry leading advantages include a

propagation delay of less than 250ps, resulting from its low channel

resistance and I/O capacitance. The device multiplexes differential

outputs from a Fast Ethernet transceiver (PHY) device to one of

two corresponding outputs. The switch is bidirectional and offers

little or no attenuation of the high-speed signals at the outputs. It

is designed for low bit-to-bit skew, high channel-to-channel noise

isolation and is compatible with various standards, such as 10/100

Base-T (Ethernet).

Generally, this part can be used to replace mechanical relays in

low-voltage LAN applications that interface a physical layer over

CAT 5 or CAT 6 unshielded twisted pair cable through an isolation

transformer.

Block Diagram

Pin Configuration

PI3L110

3.3V Quad, 2:1 Mux/DeMux

Fast Ethernet LAN Switch w/ Single Enable

1

S

16

E

2

15

3

14

4

13

5

12

6

11

7

10

8

GND

9

E

S