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.
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|Supply Voltage(s) (Nom) (V)|
|No. of TX|
|No. of RX|
|Signaling Rate (Max) (Mbps)|
|IEC 61000-4-2 Contact (+/- kV)|
|HBM ESD (kV)|
|Fault Protection (V)|
|Number of Nodes|
|Common Mode Range|
|ICC (Max) (mA)|
|Operating Temperature Range (C)|
|Approx. Price (US$)|
|-70 to 70||-70 to 70||-30 to 30||-70 to 70||-70 to 70||-30 to 30||-70 to 70||-70 to 70||-30 to 30||-70 to 70|
|-7 to 12||-7 to 12||-7 to 12||-20 to 25||-20 to 25||-20 to 25||-20 to 25||-20 to 25||-20 to 25||-20 to 25|
|-40 to 105||
-40 to 105
-40 to 125
|-40 to 105||-40 to 105||-40 to 105||-40 to 105|