器件名称:
ST485BN
功能描述:
Low power RS-485/RS-422 transceiver
文件大小:
730.75KB 共19页
简 介:
ST485B ST485C Low power RS-485/RS-422 transceiver Features ■ ■ ■ ■ ■ ■ ■ ■ ■ Low quiescent current: 300 A Designed for RS-485 interface application -7 V to 12 V common mode input voltage range Driver maintains high impedance in 3-state or with the power OFF 70 mV typical input hysteresis 30 ns propagation delay, 5 ns skew Operate from a single 5 V supply Current limiting and thermal shutdown for driver overload protection Allows up to 64 transceivers on the bus The ST485 is available in three temperature range: commercial (0 °C to 70 °C), industrial (-40 °C to 85 °C) and automotive (-55 °C to 125 °C). DIP-8 SO-8 Description The ST485 is al low power transceiver for RS-485 and RS-422 communication. Each part contains one driver and one receiver. This transceiver draw 300 A (typ.) of supply current when unloaded or fully loaded with disabled drivers. It operates from a single 5 V supply. Driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that placed the driver outputs into a high-impedance state. The ST485 is designed for bi-directional data communications on multipoint bus transmission line (half-duplex applications). Table 1. Device summary Temperature range 0 to 70 °C -40 to 85 °C 0 to 70 °C -40 to 85 °C Package DIP-8 DIP-8 SO-8 (tape and reel) SO-8 (tape and reel) Packaging 50 parts per tube / 40 tube per box 50 parts per tube / 40 tube per box 2500 parts per reel 2500 parts per reel Order code ST485……
