Exar Corporation SP3491
The SP3491 is identical to the SP3490 with the addition of driver and reciveiver tri-state enable lines.DESCRIPTION
The SP3490 and SP3491 devices are +3.3V low power full-duplex transceivers that meet the specifications of the RS-485 and RS-422 serial protocols. These devices are pin-to-pin compatible with the Exar SP490 and SP491 devices as well as popular industry standards. The SP3490 and SP3491 feature Exar's BiCMOS process, allowing low power operation without sacrificing performance. The SP3490 and SP3491 meet the electrical specifications of the RS-485 and RS-422 serial protocols up to 10Mbps under load. NC 1 14 VCC 13 NC R2 12 A R 11 B REB DE 3 4 D5 D 6 GND GND 7 10 Z 9Y 8 NC SP3491 Exar Corporation 48720 Kato Road, Fremont CA, 94538● 510-668-7017
● SP3490_3491_102_102710
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 reliability.