Overview
The SN65HVD70DGSR 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 drivers and receivers and high levels of ESD protection. The SN65HVD70DGSR operates from a single 3.3-V power supply and features separate input and output pins for full-duplex bus communication designs. It is designed to provide reliability in harsh operating environments with an extended industrial temperature range of –40°C to 125°C and high immunity to conducted differential noise due to its large receiver hysteresis of 70 mV.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | VSSOP (DGS) | - |
| Pins | 10 | - |
| Operating Temperature Range | –40 to 125 | °C |
| Supply Voltage (VCC) | –0.5 to 5 | V |
| Bus I/O Protection | > ±30-kV HBM, > ±12-kV IEC61000-4-2, > ±4-kV IEC61000-4-4 | - |
| Signaling Rate | Up to 400 kbps | - |
| Quiescent Current | < 1.1 mA | - |
| Standby Supply Current | 10 nA (Typical), < 5 µA (Maximum) | - |
| Logic Input Compatibility | 5-V Tolerant, compatible with 3.3-V or 5-V controllers | - |
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, > ±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, low standby supply 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
- Signaling rate options optimized for various applications
Applications
- E-meters
- Industrial automation
- Building automation
- Security and surveillance
- Encoders and decoders
Q & A
- What is the operating temperature range of the SN65HVD70DGSR?
The operating temperature range is –40°C to 125°C.
- What level of ESD protection does the SN65HVD70DGSR offer?
The device offers > ±30-kV HBM, > ±12-kV IEC61000-4-2 contact discharge, and > ±4-kV IEC61000-4-4 fast transient burst protection.
- What is the maximum signaling rate of the SN65HVD70DGSR?
The maximum signaling rate is up to 400 kbps.
- How many nodes can be supported on the bus with the SN65HVD70DGSR?
Up to 256 nodes can be supported on the bus.
- What is the quiescent current of the SN65HVD70DGSR during operation?
The quiescent current is less than 1.1 mA.
- Is the SN65HVD70DGSR compatible with 5-V logic inputs?
Yes, it is 5-V tolerant and compatible with 3.3-V or 5-V controllers.
- What type of package does the SN65HVD70DGSR come in?
The device comes in a VSSOP (DGS) package with 10 pins.
- Does the SN65HVD70DGSR support hot-plugging applications?
Yes, it features glitch-free power-up and power-down protection for hot-plugging applications.
- What is the typical standby supply current of the SN65HVD70DGSR?
The typical standby supply current is 10 nA, with a maximum of less than 5 µA.
- What are some common applications of the SN65HVD70DGSR?
Common applications include e-meters, industrial automation, building automation, security and surveillance, and encoders and decoders.
