Overview
The SN65HVD3085EDR is a low-power, half-duplex RS-485 transceiver designed by Texas Instruments. This device is fully compliant with the TIA/EIA-485A standard and is optimized for data transmission rates up to 1 Mbps. It is powered by a 5-V supply and features controlled transition times, making it suitable for transmitting data over long twisted-pair cables. The transceiver is characterized for operation over a wide temperature range of -40°C to 85°C, making it ideal for various industrial and automotive applications where robust communication and noise immunity are essential.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Number of receivers | 1 | Number of transmitters | 1 |
| Duplex | Half | Supply voltage (nom) (V) | 5 |
| Signaling rate (max) (Mbps) | 1 | Fault protection (V) | -9 to 14 |
| Common-mode range (V) | -7 to 12 | Number of nodes | 256 |
| Isolated | No | Supply current (max) (µA) | 900 |
| Operating temperature (°C) | -40 to 85 | Package | SOIC-8 |
| ESD protection | ±16.5 kV HBM | Receiver hysteresis | 30 mV |
Key Features
- Meets or exceeds the requirements of the TIA/EIA-485A standard
- Low quiescent power: 0.3 mA in active mode and 1 nA in shutdown mode
- Industry-standard SN75176 footprint
- Fail-safe receiver (bus open, bus shorted, bus idle)
- Glitch-free power-up and power-down bus inputs and outputs
- Wide common-mode voltage range: -7 to 12 V
- Short-circuit and overvoltage protection
- Bus-pin ESD protection up to 15 kV
- Supports up to 256 nodes on a bus
Applications
The SN65HVD3085EDR is commonly used in various demanding applications, including:
- Industrial automation networks
- Automotive systems
- Communication networks
- Energy meter networks
- Electrical inverters
- Status and command signals across telecom racks
- Cabled chassis interconnects
Q & A
- What is the maximum signaling rate of the SN65HVD3085EDR?
The SN65HVD3085EDR supports data transmission rates up to 1 Mbps.
- What is the operating temperature range of the SN65HVD3085EDR?
The device operates over a temperature range of -40°C to 85°C.
- What is the supply voltage range for the SN65HVD3085EDR?
The supply voltage range is 4.5 V to 5.5 V.
- How many nodes can the SN65HVD3085EDR support on a bus?
The device can support up to 256 nodes on a bus.
- What kind of ESD protection does the SN65HVD3085EDR offer?
The device offers ±16.5 kV HBM ESD protection on all pins.
- What is the typical supply current in active mode?
The typical supply current in active mode is 0.3 mA.
- Does the SN65HVD3085EDR have fail-safe receiver functionality?
Yes, the device has fail-safe receiver functionality for bus open, bus shorted, and bus idle conditions.
- What is the package type of the SN65HVD3085EDR?
The device comes in an SOIC-8 package.
- Is the SN65HVD3085EDR RoHS compliant?
Yes, the SN65HVD3085EDR is RoHS compliant.
- What are some common applications of the SN65HVD3085EDR?
Common applications include industrial automation, automotive systems, communication networks, and energy meter networks.
