Transceiver RS232/RS422/RS485, 2 Drivers, 3V-5.5V supply, QFN-28

LTC2870IUFD#PBF - Transceiver RS232/RS422/RS485, 2 Drivers, 3V-5.5V supply, QFN-28

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Product Overview

The LTC2870IUFD#PBF is a RS232/RS485 Multi-protocol Transceiver with integrated termination operating on a single 3 to 5.5V supply. The LTC2870 can be configured as two RS232 single-ended transceivers or one RS485 differential transceiver on shared I/O lines. Pin-controlled integrated termination resistors allow for easy interface reconfiguration, eliminating external resistors and control relays. Half-duplex switches allow four-wire and two-wire RS485 configurations. Loopback mode steers the driver inputs to the receiver outputs for diagnostic self-test. The RS485 receivers support up to 256 nodes per bus and feature full fail-safe operation for floating, shorted or terminated inputs. An integrated DC/DC boost converter uses a tiny 2mm x 1.6mm inductor and one capacitor, eliminating the need for multiple supplies for driving RS232 levels.
  • One RS485 and two RS232 transceivers
  • 20Mbps RS485 and 500kbps RS232
  • Automatic selection of integrated RS485 (120R) and RS232 (5kR) termination resistors
  • Half/full-duplex RS485 switching
  • High ESD (±26kV)
  • Logic loopback mode
  • 1.7 to 5.5V Logic interface
  • Supports up to 256 RS485 nodes
  • RS485 receiver fail-safe eliminates UART lockup
  • H-grade available (-40 to 125°C)


Signal Processing


ESD sensitive device, take proper precaution while handling the device.

Product Information

RS232, RS422, RS485
To Be Advised
MSL 1 - Unlimited
To Be Advised
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