DS90LV019TM National Semiconductor, DS90LV019TM Datasheet - Page 7

• Manufacturer Part Number: DS90LV019TM
• Description: LVDS PHY TRANSCEIVER 155MBS, SOIC8
• Manufacturer: National Semiconductor

Specifications of DS90LV019TM

• Supply Voltage Range: 3V To 3.6V, 4.5V To 5.5V
• Digital Ic Case Style: SOIC
• No. Of Pins: 14
• Operating Temperature Range: -40°C To +85°C
• Svhc: No SVHC (15-Dec-2010)
• Operating Temperature Max: 85°C
• Base Number: 90
• Data Rate: 100Mbps
• Rohs Compliant: Yes
• Supply Current: 12mA
• Driver Case Style: TSSOP
• Device Type: Driver / Receiver
• Filter Terminals: SMD
• Data Rate Max: 100Mbps
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Test Circuits and Timing Waveforms
Typical Application Diagram
Applications Information
The DS90LV019 has two control pins, which allows the de-
vice to operate as a driver, a receiver or both driver and a re-
ceiver at the same time. There are a few common practices
which should be implied when designing PCB for LVDS sig-
naling. Recommended practices are:
• Use at least 4 PCB board layer (LVDS signals, ground,
• Keep drivers and receivers as close to the (LVDS port
• Bypass each LVDS device and also use distributed bulk
power and TTL signals).
side) connector as possible.
capacitance. Surface mount capacitors placed close to
power and ground pins work best. Two or three multi-
layer ceramic (MLC) surface mount capacitors 0.1 µF,
FIGURE 9. Receiver TRI-STATE Delay Waveforms TRI-STATE Delay Waveforms
FIGURE 10. Terminated Input Fail-Safe Circuit
(Continued)
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MEDIA (CABLE AND CONNECTOR) SELECTION:
• Use controlled impedance traces which match the differ-
• Use the termination resistor which best matches the dif-
• Isolate TTL signals from LVDS signals.
• Use controlled impedance media. The cables and con-
and 0.01 µF in parallel should be used between each V
and ground. The capacitors should be as close as pos-
sible to the V
ential impedance of your transmission medium (i.e.,
Cable) and termination resistor.
ferential impedance of your transmission line.
nectors should have a matched differential impedance of
about 100 .
DS100053-13
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pin.
DS100053-11
DS100053-12
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