Overview
The SN65HVD485EDGKR is a half-duplex RS-485 transceiver manufactured by Texas Instruments. This device is designed for use in RS-485 data bus networks and is fully compliant with the TIA/EIA-485A standard. It operates on a 5-V supply and is capable of data transmission rates up to 10 Mbps over long twisted-pair cables. The SN65HVD485E is characterized for operation from –40°C to 85°C air temperature, making it suitable for a wide range of applications, including industrial automation, motor control, and telecommunications equipment.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | –0.5 | 5 | 7 | V |
| Operating Free-Air Temperature (TA) | –40 | 85 | °C | |
| Signaling Rate | 0 | 10 | Mbps | |
| Differential Input Voltage (VID) | –12 | 12 | V | |
| Differential Load Resistance (RL) | 54 | 60 | Ω | |
| ESD Protection (HBM) | ±15 | kV | ||
| Supply Current (ICC) | < 2 | mA | ||
| Shutdown Supply Current (ICCSD) | < 1 | mA |
Key Features
- Bus-pin ESD protection up to ±15 kV
- Half-unit load, allowing up to 64 nodes on a bus
- Bus-open-failsafe receiver
- Glitch-free power-up and power-down bus inputs and outputs
- Available in small VSSOP-8 package
- Meets or exceeds the requirements of the TIA/EIA-485A standard
- Industry-standard SN75176 footprint
- Internal biasing of the receiver input thresholds for open-circuit, bus-idle, or short-circuit failsafe conditions
- Thermal-shutdown function to protect the device from system-fault conditions
Applications
- Motor control
- Power inverters
- Industrial automation
- Building automation networks
- Industrial process control
- Battery-powered applications
- Telecommunications equipment
Q & A
- What is the SN65HVD485EDGKR used for?
The SN65HVD485EDGKR is a half-duplex RS-485 transceiver used for data transmission in RS-485 data bus networks.
- What is the operating voltage range of the SN65HVD485EDGKR?
The operating voltage range is from 4.5 V to 5.5 V.
- What is the maximum signaling rate of the SN65HVD485EDGKR?
The maximum signaling rate is up to 10 Mbps.
- How many nodes can be connected to the bus using the SN65HVD485EDGKR?
Up to 64 nodes can be connected to the bus.
- What is the ESD protection level of the SN65HVD485EDGKR?
The device has ESD protection up to ±15 kV.
- What are the common applications of the SN65HVD485EDGKR?
Common applications include motor control, power inverters, industrial automation, and telecommunications equipment.
- What is the operating temperature range of the SN65HVD485EDGKR?
The device operates from –40°C to 85°C air temperature.
- Does the SN65HVD485EDGKR have thermal protection?
Yes, it has a thermal-shutdown function to protect the device from system-fault conditions.
- What package types are available for the SN65HVD485EDGKR?
The device is available in SOIC (8-pin), VSSOP (8-pin), and PDIP (8-pin) packages.
- How does the receiver failsafe feature work in the SN65HVD485EDGKR?
The receiver outputs a failsafe logic-high state in cases of open bus, shorted bus, or idle bus conditions.
