DS75176B中文资料多点 RS-485/RS-422 收发器数据手册TI规格书

描述 Description

The DS75176B is a high speed differential TRI-STATEbus/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.

特性 Features

·Meets EIA Standard RS485 for Multipoint Bus Transmission and is Compatible with RS-422.
·Small Outline (SOIC) 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.
TRI-STATE is a trademark of Texas Instruments. All trademarks are the property of their respective owners.