DS90LV049Q Datasheet, PDF (2/14 Pages) Texas Instruments – DS90LV049Q Automotive LVDS Dual Line Driver and Receiver Pair

December 1, 2008
DS90LV049Q
Automotive LVDS Dual Line Driver and Receiver Pair
General Description
The DS90LV049Q is a dual CMOS flow-through differential
line driver-receiver pair designed for applications requiring ul-
tra low power dissipation, exceptional noise immunity, and
high data throughput. The device is designed to support data
rates in excess of 400 Mbps utilizing Low Voltage Differential
Signaling (LVDS) technology.
The DS90LV049Q drivers accept LVTTL/LVCMOS signals
and translate them to LVDS signals. The receivers accept
LVDS signals and translate them to 3 V CMOS signals. The
LVDS input buffers have internal failsafe biasing that places
the outputs to a known H (high) state for floating receiver in-
puts. In addition, the DS90LV049Q supports a TRI-STATE
function for a low idle power state when the device is not in
use.
The EN and EN inputs are ANDed together and control the
TRI-STATE outputs. The enables are common to all four
gates.
Features
■ ^{AECQ-100 Grade 1}
■ ^{Up to 400 Mbps switching rates}
■ ^{Flow-through pinout simplifies PCB layout}
■ ^{50 ps typical driver channel-to-channel skew}
■ ^{50 ps typical receiver channel-to-channel skew}
■ ^{3.3 V single power supply design}
■ ^{TRI-STATE output control}
■ ^{Internal fail-safe biasing of receiver inputs}
■ ^{Low power dissipation (70 mW at 3.3 V static)}
■ ^{High impedance on LVDS outputs on power down}
■ ^{Conforms to TIA/EIA-644-A LVDS Standard}
■ ^{Available in low profile 16 pin TSSOP package}
Connection Diagram
Functional Diagram
Dual-In-Line
30064201
Order Number DS90LV049QMT
Order Number DS90LV049QMTX (Tape and Reel)
See NS Package Number MTC16
Truth Table
EN
L or Open
H
L or Open
H
EN
L or Open
L or Open
H
H
LVDS Out
OFF
ON
OFF
OFF
30064202
LVCMOS Out
OFF
ON
OFF
OFF
© 2008 National Semiconductor Corporation 300642
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