DS90LV028A Datasheet, PDF (5/10 Pages) National Semiconductor (TI) – 3V LVDS Dual CMOS Differential Line Receiver

Applications Information (Continued)
When choosing cable and connectors for LVDS it is impor-
tant to remember:
Use controlled impedance media. The cables and connec-
tors you use should have a matched differential impedance
of about 100Ω. They should not introduce major impedance
discontinuities.
Balanced cables (e.g. twisted pair) are usually better than
unbalanced cables (ribbon cable, simple coax) for noise re-
duction and signal quality. Balanced cables tend to generate
less EMI due to field canceling effects and also tend to pick
up electromagnetic radiation a common-mode (not differen-
tial mode) noise which is rejected by the receiver.
For cable distances < 0.5M, most cables can be made to
work effectively. For distances 0.5M ≤ d ≤ 10M, CAT 3 (cat-
egory 3) twisted pair cable works well, is readily available
and relatively inexpensive.
Typical Performance Curves
Pin Descriptions
Pin No.
1, 4
2, 3
6, 7
8
5
Name
R_IN-
R_IN+
R_OUT
V_CC
GND
Description
Inverting receiver input pin
Non-inverting receiver input pin
Receiver output pin
Power supply pin, +3.3V ± 0.3V
Ground pin
Ordering Information
Operating
Temperature
−40˚C to +85˚C
Package Type/
Number
SOP/M08A
Order Number
DS90LV028ATM
Output High Voltage vs
Power Supply Voltage
Output Low Voltage vs
Power Supply Voltage
Output Short Circuit Current vs
Power Supply Voltage
DS100077-7
Differential Transition Voltage vs
Power Supply Voltage
DS100077-8
DS100077-9
5
DS100077-10
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