Overview
The SN65HVD1476DGSR is a 3.3-V full-duplex RS-485 transceiver from Texas Instruments, part of the SN65HVD147x family. These transceivers are known for their high ESD protection, supporting ±16-kV IEC61000-4-2 contact discharge and > ±30-kV HBM ESD protection. The SN65HVD1476DGSR operates at a signaling rate of up to 50 Mbps, making it suitable for high-speed data transmission applications. It features robust 3.3-V drivers and receivers, and is available in a small-footprint VSSOP package. The device is designed to operate from a single 3.3-V power supply and includes separate input and output pins for full-duplex bus communication. It also offers glitch-free power-up and power-down protection, which is essential for hot-plugging applications.
Key Specifications
| Parameter | Min | Nom | 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 | |
| Junction Temperature (TJ) | 150 | °C | ||
| Quiescent Current (ICC) | 750 | 1100 | µA | |
| Standby Supply Current | 0.1 | 5 | µA |
Key Features
- Up to 256 nodes on the bus due to 1/8 unit-load options.
- High ESD protection: ±16-kV IEC61000-4-2 contact discharge, > ±30-kV HBM ESD protection, and ±4 kV IEC61000-4-4 fast transient burst.
- Extended industrial temperature range: –40°C to 125°C.
- Large receiver hysteresis (70 mV) for noise rejection.
- Low power consumption: < 1.1 mA quiescent current during operation, and low standby supply current: 10 nA typical, < 5 µA (maximum).
- 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.
- Signaling rate options optimized for 50 Mbps.
- Active-high driver enables and active-low receiver enables for SN65HVD1476.
Applications
- Industrial Automation
- Encoders and Decoders
- Building Automation
- Security and Surveillance Networks
- Telecommunications
Q & A
- What is the maximum signaling rate of the SN65HVD1476DGSR? The maximum signaling rate is up to 50 Mbps.
- What is the operating voltage range of the SN65HVD1476DGSR? The operating voltage range is from 3 V to 3.6 V.
- What is the ESD protection level of the SN65HVD1476DGSR? The device offers ±16-kV IEC61000-4-2 contact discharge and > ±30-kV HBM ESD protection.
- What is the operating temperature range of the SN65HVD1476DGSR? The operating temperature range is from –40°C to 125°C.
- How many nodes can be supported on the bus with the SN65HVD1476DGSR? Up to 256 nodes can be supported due to 1/8 unit-load options.
- What is the quiescent current of the SN65HVD1476DGSR during operation? The quiescent current is less than 1.1 mA.
- Does the SN65HVD1476DGSR support hot-plugging applications? Yes, it features glitch-free power-up and power-down protection for hot-plugging applications.
- Are the logic inputs of the SN65HVD1476DGSR compatible with 5-V controllers? Yes, the logic inputs are 5-V tolerant and compatible with 3.3-V or 5-V controllers.
- What package options are available for the SN65HVD1476DGSR? The device is available in a VSSOP package.
- How can the standby current be minimized in the SN65HVD1476DGSR? The standby current can be minimized to less than 5 µA by disabling both the driver and receiver.
