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).

Features

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

Applications

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	RS-485/422 Modes		RS-232 Mode		RS-485/422 Modes Max Data Rate	RS-232 Mode Max Data Rate	Operating Temperature Range (°C)
	Drivers Per Package	Receivers Per Package	Drivers Per Package	Receivers Per Package


SP339ECR1-L	1	1	3	5	20Mbps	1Mbps	0 to 70
SP339EER1-L	1	1	3	5	20Mbps	1Mbps	-40 to 85
SP339EER1-0A-EB	Evaluation Board for SSP339EER1

Exar
Semiconductors|Integrated Circuits|IC-Interface

Exar SP339E Series Multiprotocol Transceivers

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