Features for the SN65HVD1781
- 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 to 10 Mbps
- Create a Custom Design using the SN65HVD178x with the WEBENCH® Power Designer
Description for the SN65HVD1781
The SN65HVD178x 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. The devices are also robust to ESD events with high levels of protection to the human-body-model specification.
The SN65HVD178x devices combine a differential driver and a differential receiver, which operate from a single power supply. In the SN65HVD1782, 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.