Overview
The SN65HVD3085EDGKR is a low-power RS-485 transceiver designed by Texas Instruments. This device is part of the SNx5HVD308xE family, which includes half-duplex transceivers optimized for RS-485 data bus networks. The SN65HVD3085E is specifically tailored for data transmission rates up to 1 Mbps, making it suitable for a variety of high-speed applications. It operates on a 5-V supply and is fully compliant with the TIA/EIA-485A standard. The device features low quiescent power consumption, high ESD protection, and glitch-free power-up and power-down bus inputs and outputs, making it ideal for power-sensitive and noise-tolerant applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.5 | 5.5 | 5.5 | V |
| Operating Free-Air Temperature (TA) | -40 | 85 | °C | |
| Signaling Rate | 1 | Mbps | ||
| Quiescent Current (ICC) | 300 | 600 | 600 | µA |
| Shutdown Current | 0.001 | 2 | µA | |
| ESD Protection (Bus Pins) | 15 | kV | ||
| Differential Load Resistance (RL) | 54 | 60 | Ω | |
| Junction Temperature (TJ) | -40 | 130 | °C |
Key Features
- Meets or exceeds the requirements of the TIA/EIA-485A standard
- Low quiescent power consumption: 0.3 mA active, 1 nA shutdown
- 1/8 unit load, supporting up to 256 nodes on a bus
- Bus-pin ESD protection up to 15 kV
- Industry-standard SN75176 footprint
- Fail-safe receiver for bus open, shorted, or idle conditions
- Glitch-free power-up and power-down bus inputs and outputs
- Thermal shutdown protection
- Power-on-reset circuits to keep outputs in a high-impedance state until supply voltage stabilizes
Applications
- Energy meter networks
- Motor control systems
- Power inverters
- Industrial automation networks
- Building automation networks
- Battery-powered applications
- Telecommunications equipment
Q & A
- What is the maximum signaling rate of the SN65HVD3085E?
The SN65HVD3085E supports data transmission rates up to 1 Mbps.
- What is the operating voltage range for the SN65HVD3085E?
The device operates on a supply voltage range of 4.5 V to 5.5 V.
- How much quiescent current does the SN65HVD3085E consume in active mode?
The quiescent current in active mode is typically 0.3 mA.
- What is the ESD protection level for the bus pins of the SN65HVD3085E?
The bus pins have ESD protection up to 15 kV.
- Can the SN65HVD3085E support multiple nodes on a bus?
Yes, it can support up to 256 nodes on a bus due to its 1/8 unit load capability.
- What is the thermal shutdown protection feature in the SN65HVD3085E?
The device has a thermal shutdown function to protect it from damage due to system fault conditions.
- What are the package options available for the SN65HVD3085E?
The device is available in SOIC (D), VSSOP (DGK), and PDIP (P) packages.
- Is the SN65HVD3085E compliant with industry standards?
Yes, it meets or exceeds the requirements of the TIA/EIA-485A standard and has an industry-standard SN75176 footprint.
- What is the fail-safe receiver feature in the SN65HVD3085E?
The fail-safe receiver ensures that the output is in a known state (high impedance) when the bus is open, shorted, or idle.
- How does the power-on-reset circuit work in the SN65HVD3085E?
The power-on-reset circuit keeps the outputs in a high-impedance state until the supply voltage has stabilized.
