Rainbow Electronics DS92LV010A - Manual (Page 8)

Application Information
(Continued)
• Bypass each BLVDS device and also use distributed bulk
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,
and 0.01 µF in parallel should be used between each V
CC
and ground. The capacitors should be as close as pos-
sible to the V
CC
pin.
• Use the termination resistor which best matches the dif-
ferential impedance of your transmission line.
• Leave unused LVDS receiver inputs open (floating)
TABLE 1. Functional Table
MODE SELECTED DE RE
DRIVER MODE H H
RECEIVER MODE L L
TRI-STATE MODE L H
LOOP BACK MODE H L
TABLE 2. Transmitter Mode
INPUTS OUTPUTS
DE DI DO+ DO−
H L L H
H H H L
H 2 > & > 0.8 X X
L X Z Z
L = Low state
H = High state
TABLE 3. Receiver Mode
INPUTS OUTPUT
RE (RI+)-(RI−)
L L ( < −100 mV) L
L H ( > +100 mV) H
L 100 mV > & > −100 mV X
H X Z
X = High or Low logic state
Z = High impedance state
L = Low state
H = High state
TABLE 4. Device Pin Description
Pin Name Pin # Input/Output Description
DIN 2 I TTL Driver Input
DO ± /RI ± 6, 7 I/O LVDS Driver Outputs/LVDS Receiver Inputs
R
OUT
3 O TTL Receiver Output
RE 5 I Receiver Enable TTL Input (Active Low)
DE 1 I Driver Enable TTL Input (Active High)
GND 4 NA Ground
V
CC
8 NA Power Supply
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