Description：

The SN65HVD178x devices are designed to surviveovervoltage faults such as direct shorts to powersupplies, mis-wiring faults, connector failures, cablecrushes, and tool mis-applications. The devices arealso robust to ESD events with high levels ofprotection to the human-body-model specification.The SN65HVD178x devices combine a differentialdriver and a differential receiver, which operate froma single power supply. In the SN65HVD1782, thedriver differential outputs and the receiver differentialinputs are connected internally to form a bus portsuitable for half-duplex (two-wire bus)communication. This port features a wide commonmode voltage range, making the devices suitable formultipoint applications over long cable runs. Thesedevices are characterized from –40°C to 125°C.These devices are pin-compatible with the industrystandard SN75176 transceiver, making them drop-inupgrades in most systems.These devices are fully compliant with ANSI TIA/EIA485-A with a 5-V supply and can operate with a 3.3-Vsupply with reduced driver output voltage for lowpower applications. For applications where operationis required over an extended common-mode voltagerange, see the SN65HVD1785 (SLLS872) data sheet.

Features：

• Bus-Pin Fault Protection to:

– > ±70 V (SN65HVD1780, SN65HVD1781)

– > ±30 V (SN65HVD1782)

• Operation With 3.3-V to 5-V Supply Range

• ±16-kV HBM Protection on Bus Pins

• Reduced Unit Load for Up to 320 Nodes

• Failsafe Receiver for Open-Circuit, Short-Circuit,and Idle-Bus Conditions

• Low Power Consumption

– Low Standby Supply Current, 1 µA Maximum

– ICC 4-mA Quiescent Current During Operation

• Pin-Compatible With Industry-Standard SN75176

• Signaling Rates of 115 kbps, 1 Mbps, and up to10 Mbps

• Create a Custom Design using the SN65HVD178xwith the WEBENCH® Power Designer

Applications：

• HVAC Networks

• Security Electronics

• Building Automation

• Telecommunication Equipment

• Motion Control

• Industrial Networks