Rainbow-electronics DS92LV222A User Manual download pdf

DS92LV222A

Two Channel Bus LVDS MUXed Repeater

General Description

The DS92LV222A is a repeater designed specifically for the

bridging of multiple backplanes in a rack. The DS92LV222A

utilizes low voltage differential signaling to deliver high speed

while consuming minimal power with reduced EMI. The

RSEL pin and DE pins allow maximum flexibility as to which

receiver/driver are used. The DS92LV222A repeats signals

between backplanes and accepts or drives signals onto the

local bus. It also features a flow through pin out which allows

easy PCB routing for short stubs between its pins and the

connector.

The driver is selectable between 3.5 mA (100Ω load) and 8.5

mA (27Ω load) output loop currents depending upon the

level applied to the ISEL pin. This allows for single termina-

tion (point-to-point) and also double termination (multipoint)

applications while maintain similar differential levels.

The receiver threshold is

100 mV, while providing

common mode range.

Features

n Bus LVDS Signaling (BLVDS)

n Designed for Double Termination Applications

n Low power CMOS design

n High Signaling Rate Capability (above 100 Mbps)

n Ultra Low Power Dissipation (13.2 mW quiescent)

n Balanced Output Impedance

n Lite Bus Loading 5 pF typical

n Selectable Drive Capability (3.5 mA or 8.5 mA)

n 3.3V operation

1V Common Mode Range

100 mV Receiver Sensitivity

n Available in 16 pin SOIC package.

Connection Diagram

Block Diagram

TRI-STATE

is a registered trademark of National Semiconductor Corporation.

DS100055-1

Order Number DS92LV222ATM

See NS Package Number M16A

DS100055-2

May 1998

DS92LV222A Two Channel Bus LVDS MUXed Repeater

1 2 3 4 5 6 7 8

Summary of Contents

Page 1 - DS92LV222A

DS92LV222ATwo Channel Bus LVDS MUXed RepeaterGeneral DescriptionThe DS92LV222A is a repeater designed specifically for thebridging of multiple backpla

Page 2 - DC Electrical Characteristics

Absolute Maximum Ratings (Notes 1, 2)If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales Office/Distr

Page 3 - AC Electrical Characteristics

DC Electrical Characteristics (Continued)TA= −40˚C to +85˚C unless otherwise noted, VCC= 3.3V±0.3V (Notes 2, 3)Symbol Parameter Conditions Pin Min Typ

Page 4 - DS100055-6

Test Circuits and Timing WaveformsDS100055-3FIGURE 1. Differential Driver DC Test CircuitDS100055-4FIGURE 2. Differential Receiver to Driver Propagati

Page 5 - Pin Description

Test Circuits and Timing Waveforms (Continued)Pin DescriptionPin Name Numberof PinsInput/OutputDescriptionRI±4 I Bus LVDS Receiver InputsDO±4 O Bus LV

Page 6 - Applications Information

Function Select TableMODE SELECTED DE0 DE1 RSELReceiver Zero ON, Driver Zero ON, Driver One OFF H L LReceiver Zero ON, Driver Zero OFF, Driver One ON

Page 7 - (Continued)

Applications Information (Continued)DS100055-10FIGURE 8. Terminated Input Failsafe Circuit7 www.national.com

Page 8 - NS Package Number M16A

Physical Dimensions inches (millimeters) unless otherwise notedLIFE SUPPORT POLICYNATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENT

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Rainbow-electronics DS92LV222A User Manual

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Summary of Contents

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