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SP339B

EXAR
Part Number SP339B
Manufacturer EXAR
Description RS-232/RS-485/RS-422 TRANSCEIVER
Published Nov 22, 2016
Detailed Description SP339B RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION NOVEMBER 2014 REV. 1.0.0 GENERAL DESCRIPTION The SP...
Datasheet PDF File SP339B PDF File

SP339B
SP339B

Overview
SP339B RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION NOVEMBER 2014 REV.
1.
0.
0 GENERAL DESCRIPTION The SP339B is an advanced multiprotocol transceiver supporting RS-232, RS-485, and RS-422 serial standards in a 40 pin QFN package.
Integrated cable termination and four configuration modes allow all three protocols to be used interchangeably over a single cable or connector with no additional switching components.
Full operation requires only four external charge pump capacitors.
The RS-485/422 modes feature one driver and one receiver (1TX/1RX) in both half and full duplex configurations.
The RS-232 mode (3TX/5RX) provides full support of all eight signals commonly used with the DB9 RS-232 connector.
A dedicated diagnostic loopback mode is also provided.
The high speed drivers operate up to 20Mbps in RS485/422 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).
All transmitter output...


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