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DS90LV001
3.3V LVDS-LVDS Buffer
General Description
The DS90LV001 LVDS-LVDS Buffer takes an LVDS input
signal and provides an LVDS output signal. In many large
systems, signals are distributed across backplanes, and one
of the limiting factors for system speed is the ’stub length’ or
the distance between the transmission line and the untermi-
nated receivers on individual cards. Although it is generally
recognized that this distance should be as short as possible
to maximize system performance, real-world packaging con-
cerns often make it difficult to make the stubs as short as the
designer would like.
The DS90LV001, available in the LLP (Leadless Leadframe
Package) package, will allow the receiver to be placed very
close to the main transmission line, thus improving system
performance.
A wide input dynamic range will allow the DS90LV001 to
receive differential signals from LVPECL as well as LVDS
sources. This will allow the device to also fill the role of an
LVPECL-LVDS translator.
An output enable pin is provided, which allows the user to
place the LVDS output in TRI-STATE.
The DS90LV001 is offered in two package options, an 8 pin
LLP and SOIC.
Features
n Single +3.3 V Supply
n LVDS receiver inputs accept LVPECL signals
n TRI-STATE outputs
n Receiver input threshold
<
±
100 mV
n Fast propagation delay of 1.4 ns (typ)
n Low jitter 800 Mbps fully differential data path
n 100 ps (typ) of pk-pk jitter with PRBS = 2
23
−1 data
pattern at 800 Mbps
n Compatible with ANSI/TIA/EIA-644-A LVDS standard
n 8 pin SOIC and space saving (70%) LLP package
n Industrial Temperature Range
Connection Diagram
Block Diagram
Top View
DS101338-5
Order Number DS90LV001TM, DS90LV001TLD
See NS Package Number M08A, LDA08A
DS101338-2
April 2001
DS90LV001 3.3V LVDS-LVDS Buffer
© 2001 National Semiconductor Corporation DS101338 www.national.com
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Shrnutí obsahu

Strany 1 - 3.3V LVDS-LVDS Buffer

DS90LV0013.3V LVDS-LVDS BufferGeneral DescriptionThe DS90LV001 LVDS-LVDS Buffer takes an LVDS inputsignal and provides an LVDS output signal. In many

Strany 2 - Electrical Characteristics

Typical Performance Curves (Continued)Differential Propagation Delay vsPower Supply VoltageDS101338-28Differential Propagation Delay vsAmbient Tempera

Strany 3 - AC Electrical Characteristics

Typical Performance Curves (Continued)Differential Propagation Delay vsDifferential Input VoltageDS101338-31Differential Propagation Delay vsCommon-Mo

Strany 4 - DC Test Circuits

Physical Dimensions inches (millimeters) unless otherwise notedOrder Number DS90LV001TMSee NS Package Number M08AOrder Number DS90LV001TLDSee NS Packa

Strany 5

NotesLIFE SUPPORT POLICYNATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORTDEVICES OR SYSTEMS WITHOUT THE EXPRESS WR

Strany 6 - Typical Applications

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

Strany 7 - Application Information

AC Electrical CharacteristicsOver recommended operating supply and temperature ranges unless otherwise specified. (Note 3)Symbol Parameter Conditions

Strany 8 - Typical Performance Curves

DC Test CircuitsAC Test Circuits and Timing DiagramsDS101338-3FIGURE 1. Differential Driver DC Test CircuitDS101338-8FIGURE 2. Differential Driver Ful

Strany 9

AC Test Circuits and Timing Diagrams (Continued)DS101338-1FIGURE 6. TRI-STATE Delay Test CircuitDS101338-4FIGURE 7. Output active to TRI-STATE and TRI

Strany 10

DS90LV001 Pin Description (SOIC and LLP)Pin Name Pin # Input/Output DescriptionGND 1 P GroundIN − 2 I Inverting receiver LVDS input pinIN+ 3 I Non-inv

Strany 11

Application InformationMode of Operation:The DS90LV001 can be used as a ’stub-hider.’ In manysystems, signals are distributed across backplanes, and o

Strany 12

Typical Performance CurvesOutput High Voltage vsPower Supply VoltageDS101338-16Output Low Voltage vsPower Supply VoltageDS101338-17Output Short Circui

Strany 13

Typical Performance Curves (Continued)Differential Output Voltagevs Power Supply VoltageDS101338-22Differential Output Voltagevs Load ResistorDS101338

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