DS90LV047ATMTC/NOPB National Semiconductor, DS90LV047ATMTC/NOPB Datasheet - Page 7

• Manufacturer Part Number: DS90LV047ATMTC/NOPB
• Description: IC LINE DRIVER QUAD CMOS 16TSSOP
• Manufacturer: National Semiconductor
• Type: Driverr

Specifications of DS90LV047ATMTC/NOPB

• Number Of Drivers/receivers: 4/0
• Protocol: LVDS
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP
• Supply Voltage Range: 3V To 3.6V
• Driver Case Style: TSSOP
• No. Of Pins: 16
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 1 - Unlimited
• Data Rate Max: 400Mbps
• Rohs Compliant: Yes
• For Use With: LVDS47/48EVK - EVALUATION BOARD FOR LVDS47/48
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *DS90LV047ATMTC/DRSN; *DS90LV047ATMTC/NOPB; DS90LV047ATMTC; DS90LV047ATMTC/DRSN; DS90LV047ATMTC/DRSN

Typical Application
1. Open Input Pins. The DS90LV048A is a quad receiver
2. Terminated Input. If the DS90LV047A driver is discon-
Pin Descriptions
Ordering Information
10, 11, 14,
9, 12, 13,
2, 3, 6, 7
Pin No.
device, and if an application requires only 1, 2 or 3
receivers, the unused channel(s) inputs should be left
OPEN. Do not tie unused receiver inputs to ground or
any other voltages. The input is biased by internal high
value pull up and pull down resistors to set the output to
a HIGH state. This internal circuitry will guarantee a
HIGH, stable output state for open inputs.
nected (cable unplugged), or if the DS90LV047A driver
is in a TRI-STATE or power-off condition, the receiver
output will again be in a HIGH state, even with the end of
cable 100Ω termination resistor across the input pins.
The unplugged cable can become a floating antenna
which can pick up noise. If the cable picks up more than
10mV of differential noise, the receiver may see the
noise as a valid signal and switch. To insure that any
15
16
1
D
D
Name
D
OUT+
OUT−
EN
IN
Driver input pin, TTL/CMOS
compatible
Non-inverting driver output pin,
LVDS levels
Inverting driver output pin, LVDS
levels
Driver enable pin: When EN is
low, the driver is disabled. When
EN is high and EN
open, the driver is enabled. If both
EN and EN
the driver is disabled.
−40˚C to +85˚C
−40˚C to +85˚C
Temperature
(Continued)
Description
*
Operating
are open circuit, then
*
is low or
FIGURE 7. Driver Output Levels
Package Type/
TSSOP/MTC16
SOP/M16A
Number
7
3. Shorted Inputs. If a fault condition occurs that shorts
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.
Pin No.
noise is seen as common-mode and not differential, a
balanced interconnect should be used. Twisted pair
cable will offer better balance than flat ribbon cable.
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
external common-mode voltage applied.
8
4
5
DS90LV047ATMTC
DS90LV047ATM
Order Number
Name
GND
EN
V
CC
*
Driver enable pin: When EN
high, the driver is disabled. When
EN
high, the driver is enabled. If both
EN and EN
the driver is disabled.
Power supply pin, +3.3V
Ground pin
*
is low or open and EN is
Description
*
are open circuit, then
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±
0.3V
*
is