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Home » NEWEST Products » New by Manufacturer » Exar » Exar SP339E Series Multiprotocol Transceivers
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Exar SP339E Series Multiprotocol Transceivers

Exar's SP339E Series Multiprotocol Transceivers are an advanced multiprotocol transceiver supporting RS-232, RS-485, and RS-422 serial standards. In the RS-485/422 modes these SP339E Series feature one driver and one receiver (1TX/1RX) in both half and full duplex configurations. In the RS-232 mode (3TX/5RX) these SP339E Series Multiprotocol Transceivers provide full support of all eight signals commonly used with the DB9 RS-232 connector. A dedicated diagnostic loopback mode is also provided. These Exar SP339E Series Multiprotocol Transceivers operate up to 20Mbps in RS-485/422 modes, and up to 1Mbps in RS-232 mode. All drivers can be slew limited to 250kbps in any mode to minimize electromagnetic interference (EMI).

  • Pin selectable Cable Termination
  • No external resistors required for RS-485/422 termination and biasing
  • 3.3V or 5V Single Supply Operation
  • Robust ESD Protection on bus pins
  • Max Data Rate of 20Mbps in RS-485/422 Modes and up to 1Mbps in RS-232 Modes
  • Pin selectable 250kbps Slew Limiting
  • 3 Drivers, 5 Receivers RS-232/V.28
  • 1 Driver, 1 Receiver RS-485/422
  • RS-485/422 Enhanced Failsafe for open, shorted, or terminated but idle inputs
  • Space saving 6mm x 6mm QFN-40 Package
  • Pin compatible with SP338E
  • Dual Protocol Serial Ports (RS-232 or RS-485/422)
  • Industrial Computers
  • Industrial and Process Control Equipment
  • Point-Of-Sale Equipment
  • Networking Equipment
  • HVAC Controls Equipment
  • Building Security and Automation Equipment

Part Number
Operating Temperature
Range (ºC)
SP339ECR1-L 0 to 70
SP339EER1-L -40 to 85

SP339EER1-0A-EB Evaluation Board for SP339EER1
  • Exar
  • Semiconductors|Integrated Circuits|IC-Interface