DS90LV031A Datasheet, PDF (7/11 Pages) National Semiconductor (TI) – 3V LVDS Quad CMOS Differential Line Driver

Applications Information (Continued)
3. Shorted Inputs. If a fault condition occurs that shorts
the receiver inputs together, thus resulting in a 0V differ-
ential input voltage, the receiver output will remain in a
HIGH state. Shorted input fail-safe is not supported
across the common-mode range of the device (GND to
2.4V). It is only supported with inputs shorted and no ex-
ternal common-mode voltage applied.
External lower value pull up and pull down resistors (for a
stronger bias) may be used to boost fail-safe in the presence
of higher noise levels. The pull up and pull down resistors
should be in the 5kΩ to 15kΩ range to minimize loading and
waveform distortion to the driver. The common-mode bias
point should be set to approximately 1.2V (less than 1.75V)
to be compatible with the internal circuitry.
FIGURE 7. Driver Output Levels
DS100095-9
Pin Descriptions
Pin No.
1, 7, 9, 15
2, 6, 10,
14
3, 5, 11,
13
4
12
16
8
Name
D_IN
D_OUT+
D_OUT−
EN
EN*
V_CC
GND
Description
Driver input pin, TTL/CMOS
compatible
Non-inverting driver output pin,
LVDS levels
Inverting driver output pin, LVDS
levels
Active high enable pin, OR-ed
with EN*
Active low enable pin, OR-ed
with EN
Power supply pin, +3.3V ± 0.3V
Ground pin
Operating
Temperature
-55˚C to +125˚C
Package Type/ Order Number
Number
Cerpack/W16A DS90LV031AW-QML
Ordering Information
Operating
Temperature
−40˚C to +85˚C
−40˚C to +85˚C
Package Type/ Order Number
Number
SOP/M16A
DS90LV031ATM
TSSOP/MTC16 DS90LV031ATMTC
DS100095-10
FIGURE 8. Typical DS90LV031A, D_OUT (single ended)
vs R_L, T_A = 25˚C
7
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