LTC2873
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LTC2873

Single-Bus RS485/RS232 Multiprotocol Transceiver with Switchable Termination

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Info: : PRODUCTION tooltip
Part Details
Part Models 6
1ku List Price Starting From $5.31
Features
  • One RS485 or One RS232 Transceiver
  • 3V to 5.5V Supply Voltage
  • Up to 20Mbps RS485
  • Slew-Controlled RS232 Operation:
    • Selectable 1Mbps or 250kbps
  • Automatic Selection of Integrated RS485 (120Ω) and RS232 (5kΩ) Termination Resistors
  • High ESD: ±26kV HBM
  • Logic Loopback Mode
  • 1.7V to 5.5V Logic Interface
  • Supports Up to 256 RS485 Nodes
  • RS485 Receiver Failsafe Eliminates UART Lockup
  • H-Grade Available (–40°C to 125°C)
  • Available in 24-Pin 4mm × 5mm QFN Package
Additional Details
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The LTC2873 is a robust pin-configurable multiprotocol transceiver that supports RS232, RS485, and RS422 protocols while operating on a single 3V to 5.5V supply. The LTC2873 can be configured as a half-duplex RS485 transceiver or as an RS232 transceiver using the same two bus pins.

A pin-controlled integrated termination resistor allows for easy interface reconfiguration, eliminating external resistors and control relays. Loopback mode steers the driver inputs to the receiver outputs for diagnostic self-test. The RS485 receiver supports up to 256 nodes per bus, and features full failsafe operation for floating, shorted or terminated inputs.

An integrated DC/DC boost converter uses a tiny 2mm × 1.6mm inductor and one capacitor, eliminating the need for multiple supplies when driving RS232 levels.

Applications

  • Software Selectable RS232/RS485/RS422 Interface
  • Industrial Sensors and Actuators
  • Alarm Systems
  • Traffic Control and Monitoring
  • Highway Signs and Jumbo Displays
Part Models 6
1ku List Price Starting From $5.31

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC2364A

LTC2873 Demo Board | Single Bus RS232/RS485 Multiprotocol Transceiver with Integrated Termination (Shared I/O) (DC2026 Optional)

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DC2364A

LTC2873 Demo Board | Single Bus RS232/RS485 Multiprotocol Transceiver with Integrated Termination (Shared I/O) (DC2026 Optional)

LTC2873 Demo Board | Single Bus RS232/RS485 Multiprotocol Transceiver with Integrated Termination (Shared I/O) (DC2026 Optional)

Product Detail

Demonstration circuit 2364A showcases the LTC2873 RS232/RS485 multiprotocol transceiver with integrated termination. The DC2364A operates as a stand-alone evaluation platform or can be used as a shield with a Linduino® or Arduino microcontroller board for quick and versatile evaluation of the LTC2873.


DC2026 is optional (not required).

Tools & Simulations

Tools & Simulations 2

Linduino

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

Purchase Linduino

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Code Files

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