●General Description
●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.
●Features
●■ 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.
