1

PS8720C

03/26/07

Features

• Low bit-to-bit skew: 200ps

• Low Crosstalk: –27dB @ 250 MHz

• Near-Zero propagation delay: 250ps

• Switching speed: 9ns

• Channel On Capacitance: 10pF (typical)

• Live Insertion Capable

• Status Indicator LEDs switched with Ethernet Pairs

• >3kV ESD protection (human body model

• >350 MHz bandwidth (or data frequency)

• Packaging (Pb-free & Green available):

– 36-contact TQFN (ZF)

Applications

• Dual Physical Layer Device sharing to one interface

connector

• Routes signals for 10/100 Mbit Ethernet

Description

The PI3L510 is a 8- to 4-Channel 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 B1 or B2

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 Description

PI3L510

3.3V, 4-Channel, 2:1, Mux/DeMux

Fast Ethernet LAN Switch w/ Single Enable

SEL

A0

A1

GND

A2

A3

GND

SEL

VCC

LED0

LED1

VCC

0B1

1B1

0B2

1B2

GND

2B1

3B1

2B2

3B2

1

2

3

4

5

6

7

8

9

10

28

27

26

25

24

23

22

21

20

19

11

12

13

14

15

16

17

18

36

35

34

33

32

31

30

29

07-0077