SP339B Overview
Key Specifications
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.
Key Features
- 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
