The device is designed to survive overvoltage faults such as direct shorts to powersupplies, mis-wiring faults, connector failures, cable crushes, and tool mis-applications. It isalso robust to ESD events, with high levels of protection to the human-body-modelspecification.
The SN65HVD1781A-Q1 combines a differential driver and a differential receiver, whichoperate from a single power supply. The driver differential outputs and the receiver differentialinputs are connected internally to form a bus port suitable for half-duplex (two-wire bus)communication. This port features a wide common-mode voltage range, making the device suitable formultipoint applications over long cable runs. The device is characterized from –40°C to 125°C. TheSN65HVD1781A-Q1 device is pin-compatible with the industry-standard SN75176 transceiver, making ita drop-in upgrade in most systems.
The device is fully compliant with ANSI TIA/EIA 485-A with a 5-V supply and can operatewith a 3.3-V supply with reduced driver output voltage for low-power applications. For applicationswhere operation is required over an extended common-mode voltage range, see the SN65HVD1785 (SLLS872) data sheet.
Feature
- Qualified for Automotive Applications
- AEC-Q100 Qualified Withthe Following Results
- Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
- Device HBM ESDClassification Level H2
- Device CDM ESG Classification LevelC3B
- Bus-Pin Fault Protection to: > ±70V
- 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-BusConditions
- Low Power Consumption
- Low Standby Supply Current, 1 μA Maximum
- ICC 4-mA Quiescent During Operation
- Pin-Compatible With Industry-Standard SN75176
- Signaling Rates up to 1 Mbps
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