Overview
The SN65HVD76DR is a 3.3-V full-duplex RS-485 transceiver produced by Texas Instruments. This device is part of the SN65HVD7x family, which extends the RS-485 portfolio with robust 3.3-V drivers and receivers and high levels of ESD protection. The transceiver operates from a single 3.3-V power supply and features separate input and output pins for full-duplex bus communication designs. It is suitable for multi-point applications over long cable runs due to its wide common-mode voltage range and large receiver hysteresis for noise rejection.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOIC (D) - 14 pins |
| Operating Temperature Range | -40°C to 125°C |
| Supply Voltage | 3V to 3.6V (Nominal 3.3V) |
| Data Rate | Up to 50 Mbps |
| Protocol | RS-422, RS-485 |
| Duplex Mode | Full Duplex |
| Receiver Hysteresis | 70 mV |
| ESD Protection | > ±30-kV HBM, > ±12-kV IEC61000-4-2 contact discharge |
| Quiescent Current | < 1.1 mA |
| Standby Current | < 5 µA (maximum) |
Key Features
- 1/8 Unit-load options available, supporting up to 256 nodes on the bus
- High levels of ESD protection: > ±30-kV HBM, > ±12-kV IEC61000-4-2 contact discharge, and > ±4-kV IEC61000-4-4 fast transient burst
- Large receiver hysteresis (70 mV) for noise rejection
- Low power consumption: < 1.1-mA quiescent current during operation and < 5 µA standby current
- 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
- Active-high driver enables and active-low receiver enables
Applications
- Pocket PCs and handheld devices
- Servers and data centers
- Car alarm systems and automotive electronics
- Gigabit Ethernet and network equipment
- Wireless communication devices
- Industrial automation and control systems
Q & A
- What is the operating temperature range of the SN65HVD76DR?
The operating temperature range is from -40°C to 125°C.
- What is the maximum data rate supported by the SN65HVD76DR?
The maximum data rate supported is up to 50 Mbps.
- What types of ESD protection does the SN65HVD76DR offer?
The device offers > ±30-kV HBM, > ±12-kV IEC61000-4-2 contact discharge, and > ±4-kV IEC61000-4-4 fast transient burst ESD protection.
- How many nodes can be supported on the bus with the SN65HVD76DR?
Up to 256 nodes can be supported on the bus.
- What is the quiescent current of the SN65HVD76DR during operation?
The quiescent current is less than 1.1 mA.
- Does the SN65HVD76DR support hot-plugging applications?
Yes, it features glitch-free power-up and power-down protection for hot-plugging applications.
- What is the receiver hysteresis of the SN65HVD76DR?
The receiver hysteresis is 70 mV.
- Is the SN65HVD76DR compatible with 5-V logic inputs?
Yes, it is 5-V tolerant and compatible with 3.3-V or 5-V controllers.
- How can the standby current be minimized in the SN65HVD76DR?
A low standby current of less than 5 µA can be achieved by disabling both the driver and receiver.
- What package types are available for the SN65HVD76DR?
The device is available in a standard SOIC package as well as in a small-footprint MSOP package.
