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ANALOG DEVICES LT1791IS#TRPBF

Transceiver, RS422 / RS485, 1 Driver, 1 Receiver, 4.75 V to 5.25 V, NSOIC-14, -40 °C to 85 °C

ANALOG DEVICES LT1791IS#TRPBF

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Manufacturer Part No:
LT1791IS#TRPBF
Order Code:
4024157
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Technical Datasheet:
LT1791IS#TRPBF   Datasheet
ECAD / MCAD
Supply Frame Models Link
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Product Overview

LT1791 is fault protected full-duplex differential bus transceiver for RS485 and RS422 applications which feature on-chip protection from overvoltage faults on the data transmission lines. Receiver input and driver output pins can withstand voltage faults up to ±60V with respect to ground with no damage to the device. Faults may occur while the transceiver is active, shut down or powered off. Data rates to 250kbaud on networks of up to 128 nodes are supported. Controlled slew rates on the driver outputs control EMI emissions and improve data transmission integrity on improperly terminated lines. Driver is specified to operate with inexpensive cables as low as 72ohm characteristic impedance. Typical applications are industrial control data networks, CAN bus applications, HVAC controls.
  • Pin compatible with LTC485 and LTC491
  • No damage or latchup to ESD, outputs assume a high impedance when off or powered down
  • IEC-1000-4-2 level 4 is ±15kV air discharge, IEC-1000-4-2 level 2 is ±4kV contact discharge
  • Drives low cost, low impedance cables, short-circuit protection on all outputs
  • Differential driver output voltage (unloaded) is 4.1V at IO=0, TA=25°C, VCC=5V
  • Driver common mode output voltage is 2.5V typical R=27ohm or R=50 ohm, TA=25°C, VCC=5V
  • Input voltage is 2V (high), 0.8V (low) at DI, DE, active-low RE, TA=25°C, VCC=5
  • Input current is 5µA at DI, DE, active-low RE, TA=25°C, VCC=5
  • 14-lead plastic SO package, –40°C to 85°C temperature rating
  • Thermal shutdown protection

Footnotes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party

Product Information

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:
RS422 / RS485 Transceiver

:
1Receivers

:
1

:
Full Duplex

:
250Kbps

:
4.75V

:
5.25V

:
NSOIC

:
14Pins

:
128

:
±4 kV (Contact), ±15 kV (Air Gap), ±15 kV (HBM)

:
Open, Short

:
-40°C

:
85°C

:
-

:
-

:
MSL 1 - Unlimited

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Technical Documents (2)

Packaging type Cut Tape

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