Overview
The SN65HVD1476DR, produced by Texas Instruments, is a 3.3-V full-duplex RS-485 transceiver that offers high ESD protection and robust performance in harsh operating environments. This device is part of the SN65HVD147x family, which features the highest ESD protection in the RS-485 portfolio, including ±16-kV IEC61000-4-2 contact discharge and > ±30-kV HBM ESD protection. The SN65HVD1476DR operates from a single 3.3-V power supply and is available in both SOIC-14 and MSOP-10 packages.
The device supports signaling rates up to 50 Mbps, making it suitable for high-speed data transmission applications. It also features glitch-free power-up and power-down protection, which is essential for hot-plugging applications. The large receiver hysteresis of 70 mV provides immunity to conducted differential noise, and the extended industrial temperature range of –40°C to 125°C ensures reliability in diverse environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3 | 3.3 | 3.6 | V |
| Input Voltage at any Bus Pin | –7 | 12 | V | |
| High-Level Input Voltage (VIH) | 2 | VCC | V | |
| Low-Level Input Voltage (VIL) | 0 | 0.8 | V | |
| Differential Input Voltage (VID) | –12 | 12 | V | |
| Output Current, Driver (IO) | –60 | 60 | mA | |
| Output Current, Receiver (IO) | –8 | 8 | mA | |
| Differential Load Resistance (RL) | 54 | 60 | Ω | |
| Differential Load Capacitance (CL) | 50 | pF | ||
| Signaling Rate | 50 Mbps | |||
| Operating Free-Air Temperature (TA) | –40 | 125 | °C |
Key Features
- High ESD protection: ±16-kV IEC61000-4-2 contact discharge and > ±30-kV HBM ESD protection.
- Extended industrial temperature range: –40°C to 125°C.
- Large receiver hysteresis (70 mV) for noise rejection.
- Low power consumption: Quiescent current < 1.1 mA, standby current < 5 µA.
- Glitch-free power-up and power-down protection for hot-plugging applications.
- 5-V tolerant logic inputs compatible with 3.3-V or 5-V controllers.
- Supports up to 256 nodes on the bus.
- Wide common-mode voltage range suitable for multi-point applications over long cable runs.
Applications
- Industrial Automation
- Encoders and Decoders
- Building Automation
- Security and Surveillance Networks
- Telecommunications
Q & A
- What is the maximum signaling rate of the SN65HVD1476DR? The maximum signaling rate is 50 Mbps.
- What is the operating temperature range of the SN65HVD1476DR? The operating temperature range is –40°C to 125°C.
- What kind of ESD protection does the SN65HVD1476DR offer? It offers ±16-kV IEC61000-4-2 contact discharge and > ±30-kV HBM ESD protection.
- What is the quiescent current of the SN65HVD1476DR? The quiescent current is less than 1.1 mA.
- Is the SN65HVD1476DR compatible with 5-V logic inputs? Yes, it is 5-V tolerant.
- How many nodes can be supported on the bus by the SN65HVD1476DR? Up to 256 nodes can be supported.
- What are the package options for the SN65HVD1476DR? It is available in SOIC-14 and MSOP-10 packages.
- Does the SN65HVD1476DR have glitch-free power-up and power-down protection? Yes, it does.
- What is the typical standby current of the SN65HVD1476DR when both driver and receiver are disabled? The typical standby current is less than 5 µA.
- What is the receiver hysteresis of the SN65HVD1476DR? The receiver hysteresis is 70 mV.
