Packaging information
| Package | Pins SOIC (D) | 8 |
| Operating temperature range (°C) -40 to 105 |
| Package qty | Carrier 75 | TUBE |
Features for the SN65HVD1794
- Bus-Pin Fault Protection to > ±70 V
- Cable Invert Function Allows Correction for Reversed Bus Pins
- Common-Mode Voltage Range (–20 V to 25 V) More Than Doubles TIA/EIA
485 Requirement - Bus I/O Protection
- ±16 kV JEDEC HBM Protection
- Reduced Unit Load for Up to 256 Nodes
- Failsafe Receiver for Open-Circuit, Short-Circuit and Idle-Bus Conditions
- Low Power Consumption
- ICC 5 mA Quiescent During Operation
- Power-Up, Power-Down Glitch-Free Operation
Description for the SN65HVD1794
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 human-body model specifications.
These devices combine a differential driver and a differential receiver, which operate from a single power supply. The driver differential outputs and the receiver differential inputs are connected internally to for a bus port suitable for half-duplex (two-wire bus) communication. A cable invert pin (INV) allows active correction of mis-wires that may occur during installation. Upon detecting communication errors, the user can apply a logic HIGH to the INV pin, effectively inverting the polarity of the differential bus port, thereby correcting for the reversed bus wires.
These devices feature a wide common-mode voltage range, making them suitable for multi-point applications over long cable runs. These devices are characterized from –40°C to 105°C.
For similar features with 3.3 V supply operation, see the SN65HVD1781 (SLLS877).