1

PS8488B

09/28/04

Features

• Meets or Exceeds the Requirements of ANSI TIA/

EIA-644-1995

• Designed for Signaling Rates up to 650 Mbit/s (325 MHz)

• Operates from a 3.3V Supply: –40°C to +85°C

• Low Voltage Differential Signaling with Output Voltages

of±350mVinto:

-100Ohmload(PI90LV022)

-50OhmloadBusLVDSSignaling(PI90LVB022)

• Accepts ±350mV differential inputs

• Wide common mode input voltage range: 0.2V to 2.7V

• Output drivers are high impedance when disabled or

• Inputs are open, short, and terminated fail safe

• Propagation Delay Time: 3.5ns

• ESD protection is 10kV on bus pins

• Bus Pins are High Impedance when disabled or

• TTL Inputs are 5V I/O Tolerant

• Power Dissipation at 400Mbit/s less than 150mW

• Industrial temperature rating

• Packaging (Pb-free & Green available):

- 16-pin SOIC (W)

- 16-pin TSSOP (L)

Description

The PI90LV022 and PI90LVB022 are differential line drivers and

receivers that use Low Voltage Differential Signaling (LVDS) to

achieve signaling rates as high as 650 Mbps. The receiver outputs

can be switched to either or both drivers through the multiplexer

control signals S0 and S1. This allows the flexibility to perform

splitter or signal routing functions with a single device.

The LVDS standard provides a minimum differential output voltage

magnitude of 247mV into a 100 Ohm load and receipt of 100mV DC

signals with up to 1V of ground potential difference between a

transmitter and receiver. The PI90LVB022 doubles the output drive

current to achieve Bus LVDS signaling levels with a 50 Ohm load.

A doubly terminated Bus LVDS line enables multi-point configura-

tions. Switching between channels does not create false transitions

on the outputs.

The intended application of these devices and signaling technique

is for both point-to-point base-band (PI90LV022) and multipoint

(PI90LVB022)datatransmissionsovercontrolledimpedancemedia.

Block Diagram

PinConfiguration

1A

1B

+

–

2A

2B

+

–

1DE

1Y

1Z

2Y

2Z

2DE

S0 S1

1B

1A

S0

1DE

S1

2A

2B

GND

1Y

1Z

2DE

2Z

2Y

GND

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

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PI90LV022, PI90LVB022

LVDS Mux/Repeater

16-Pin

L,W