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SN65176BDR

TISN65176BDR

Texas Instruments
1/1 Transceiver Half RS422, RS485 8-SOIC
NRND35,367 in stock

Overview

The SN65176BDR is a differential bus transceiver designed for bidirectional data communication on multipoint bus transmission lines. It combines a 3-state differential line driver and a differential input line receiver, both operating from a single 5V power supply. This device is fully compliant with ANSI standards TIA/EIA-422-B and TIA/EIA-485-A, making it a standard choice for robust industrial networking.

Why Choose This Part

The transceiver features a high minimum receiver input impedance of 12k ohms and a wide input/output bus voltage range of -7V to 12V. It includes thermal shutdown protection and driver current limiting for increased reliability against bus faults. The 50mV typical receiver hysteresis improves noise immunity in harsh signaling environments.

Applications

Industrial Fieldbus Networks
Used in RS-485 based protocols like Modbus or Profibus for communication between PLCs and remote I/O.
Motor Control Feedback
Transmitting encoder data over long distances in electrically noisy industrial environments.
Building Automation
Connecting HVAC controllers, lighting systems, and security panels across large facilities using twisted-pair wiring.

Key Specifications

Type Transceiver
Duplex Half
Protocol RS422, RS485
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Voltage - Supply 4.75V ~ 5.25V
Receiver Hysteresis 50 mV
Operating Temperature -40degC ~ 105degC
Supplier Device Package 8-SOIC
Number of Drivers/Receivers 1/1

Getting Started

To use this part, provide a stable 5V supply and place a 0.1uF bypass capacitor close to the VCC pin. Ensure the bus is terminated with 120-ohm resistors at both ends of the cable to minimize reflections. The DE (Driver Enable) and /RE (Receiver Enable) pins can be tied together for simple half-duplex control from a single GPIO.

Also Consider

MAX485ESA+T Maxim Integrated - A widely used industry alternative with lower power consumption in some operating modes.
THVD1410DR TITexas Instruments - A more modern equivalent with enhanced ESD protection and higher data rate capabilities.
ADM485ARZ Analog Devices - Offers similar 5V half-duplex performance with high robustness for industrial serial interfaces.