SN65HVD1781DR RS-485 Interface IC 70V Fault-Protected RS-485 Xceivers
♠ Product Description
| Product Attribute | Attribute Value |
| Manufacturer: | Texas Instruments |
| Product Category: | RS-485 Interface IC |
| Mounting Style: | SMD/SMT |
| Package / Case: | SOIC-8 |
| Series: | SN65HVD1781 |
| Function: | Transceiver |
| Data Rate: | 1 Mb/s |
| Number of Drivers: | 1 Driver |
| Number of Receivers: | 1 Receiver |
| Duplex: | Half Duplex |
| Supply Voltage - Max: | 5.5 V |
| Supply Voltage - Min: | 3.15 V |
| Operating Supply Current: | 6 mA |
| Minimum Operating Temperature: | - 40 C |
| Maximum Operating Temperature: | + 125 C |
| ESD Protection: | 16 kV |
| Packaging: | Reel |
| Packaging: | Cut Tape |
| Packaging: | MouseReel |
| Brand: | Texas Instruments |
| Input Voltage: | - 7 V to + 12 V |
| Operating Supply Voltage: | 3.3 V, 5 V |
| Output Voltage: | 2.75 V |
| Pd - Power Dissipation: | 905 mW |
| Product: | RS-485 Transceivers |
| Product Type: | RS-485 Interface IC |
| Propagation Delay Time: | 200 ns |
| Shutdown: | No Shutdown |
| Factory Pack Quantity: | 2500 |
| Subcategory: | Interface ICs |
| Unit Weight: | 0.002677 oz |
♠ SN65HVD178x Fault-Protected RS-485 Transceivers With 3.3-V to 5-V Operation
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 commonmode 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 industrystandard 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 lowpower 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 (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
• HVAC Networks
• Security Electronics
• Building Automation
• Telecommunication Equipment
• Motion Control
• Industrial Networks
