These devices are designed to survive overvoltage faults such as direct shorts to power supplies, mis-wiring faults, connector failures, cable crushes, and tool mis-applications. They are also robust to ESD events, with high levels of protection to the human-body-model specification.
These devices combine a differential driver and a differential receiver, which operate from a single power supply. In the 'HVD1782, the driver differential outputs and the receiver differential inputs 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 devices suitable for multipoint applications over long cable runs. These devices are characterized from –40°C to 125°C.These devices are pin-compatible with the industry-standard SN75176 transceiver, making them drop-in upgrades in most systems.
These devices are fully compliant with ANSI TIA/EIA 485-A with a 5-V supply and can operate with a 3.3-V supply with reduced driver output voltage for low-power applications. For applications where operation is required over an extended common-mode voltage range, see the SN65HVD1785 (SLLS872) data sheet.
Bus-Pin Fault Protection to:
> ±70 V ('HVD1780, 81)
> ±30 V ('HVD1782)
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 Max
ICC 4 mA Quiescent During Operation
Pin-Compatible With Industry-Standard SN75176
Signaling Rates of 115 kbps, 1 Mbps, and up to 10 Mbps