DS90LV018A_05 Datasheet, PDF (5/9 Pages) National Semiconductor (TI) – 3V LVDS Single CMOS Differential Line Receiver

Applications Information (Continued)
CABLES AND CONNECTORS, GENERAL COMMENTS
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
reduction and signal quality. Balanced cables tend to gener-
ate less EMI due to field canceling effects and also tend to
pick up electromagnetic radiation a common-mode (not dif-
ferential 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
(category 3) twisted pair cable works well, is readily available
and relatively inexpensive.
Pin Descriptions
Pin No.
1
2
7
8
5
3, 4, 6
Name
Description
R_IN-
R_IN+
R_OUT
V_CC
GND
Inverting receiver input pin
Non-inverting receiver input pin
Receiver output pin
Power supply pin, +3.3V ± 0.3V
Ground pin
NC No connection
Ordering Information
Operating
Temperature
−40˚C to +85˚C
Package Type/
Number
SOP/M08A
Order Number
DS90LV018ATM
Typical Performance Characteristics
Output High Voltage vs
Power Supply Voltage
Output Low Voltage vs
Power Supply Voltage
10007807
10007808
5
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