产品介绍

DS75176B 多点 RS-485/RS-422 收发器

The DS75176B is a high speed differential TRI-STATE® bus/line transceiver designed to meet the requirements of EIA standard RS485 with extended common mode range (+12V to -7V), for multipoint data transmission. In addition, it is compatible with RS-422.

The driver and receiver outputs feature TRI-STATE capability, for the driver outputs over the entire common mode range of +12V to -7V. Bus contention or fault situations that cause excessive power dissipation within the device are handled by a thermal shutdown circuit, which forces the driver outputs into the high impedance state.

DC specifications are guaranteed over the 0 to 70°C temperature and 4.75V to 5.25V supply voltage range

DS75176B 特性

• Meets EIA standard RS485 for multipoint bus transmission and is compatible with RS-422.
• Small Outline (SO) Package option available for minimum board space.
• 22 ns driver propagation delays.
• Single +5V supply.
• -7V to +12V bus common mode range permits ±7V ground difference between devices on the bus.
• Thermal shutdown protection.
• High impedance to bus with driver in TRI-STATE or with power off, over the entire common mode range allows the unused devices on the bus to be powered down.
• Pin out compatible with DS3695/A and SN75176A/B.
• Combined impedance of a driver output and receiver input is less than one RS485 unit load, allowing up to 32 transceivers on the bus.
• 70 mV typical receiver hysteresis

DS75176B 应用技术支持与电子电路设计开发资源下载

1. DS75176B 数据资料 dataSheet 下载.PDF
2. TI 德州仪器接口产品选型与价格 . xls
3. 选择正确的电平转换解决方案 (Rev. A) (zhca047.HTM, 8 KB)
4. SMBus Compatibility with an I2C Device (sloa132.HTM, 8 KB)