DS75176

The DS75176 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 of DS75176

• 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.