SP1485E

® PRELIMINARY SP1485E Enhanced Low Power Half-Duplex RS-485 Transceivers ■ +5V supply ■ Low Power BiCMOS ■ Driver/Receiver Enable for Multi-Drop configurations ■ Available in 8 Pin NSOIC or PDIP packages ■ Enhanced ESD Specifications: +15KV Human Body Model +15KV IEC1000-4-2 Air Discharge +8KV IEC1000-4-2 Contact Discharge RO 1 RE 2 DE 3 DI 4 8 VCC SP1485E 8 Pin - nSOIC 7 B 6 A 5 GND DESCRIPTION The SP1485E is a half-duplex transceiver that meets the specifications of RS-485 and RS422 serial protocols with enhanced ESD performance. The ESD tolerance has been improved on this device to over +15KV for both Human Body Model and IEC1000-4-2 Air Discharge Method. This device is pin-to-pin compatible with Sipex's SP485 devices as well as popular industry standards. As with the original version, the SP1485E features Sipex's BiCMOS design allowing low power operation without sacrificing performance. The SP1485E meets the requirements of the RS-485 and RS-422 protocols up to 20Mbps under load. BLOCK DIAGRAM RO 1 RE 2 DE 3 DI 4 R 8 Vcc 7B 6A D SP1485E 5 GND Rev:C Date: 02/26/04 SP1485E Low Power Half-Duplex RS485 Transceivers © Copyright 2004 Sipex Corporation 1 ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliab...