Overview
The SN65HVD11D is a 3.3-V, half-duplex RS-485 transceiver produced by Texas Instruments. This device is optimized for balanced transmission lines and meets or exceeds the requirements of ANSI standard TIA/EIA-485-A and ISO 8482:1993. It is designed for bidirectional data communication on multipoint bus-transmission lines, making it suitable for a variety of industrial and commercial applications.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Supply Voltage | 3.0 | 3.3 | 3.6 | V | |
| Signaling Rate | 1 Mbps, 10 Mbps, 32 Mbps | ||||
| Differential Output Voltage | RL = 54 Ω | 2.1 | V | ||
| Bus-Pin ESD Protection | ±16 kV HBM | ||||
| Supply Current (Driver and Receiver Enabled) | RE at 0 V, DE at VCC, All other inputs open, no load | 3.8 | 6 | mA | |
| Standby Current | RE at VCC, DE at 0 V, All other inputs open | 0.2 | 5 | μA | |
| Operating Temperature Range | –40°C | 125°C | °C | ||
| Package Type | SOIC (8), PDIP (8), CFP (8) |
Key Features
- Operates with a single 3.3-V power supply.
- Meets or exceeds ANSI standard TIA/EIA-485-A and ISO 8482:1993 requirements.
- Bus-pin ESD protection exceeds ±16 kV Human Body Model (HBM).
- Optional driver output transition times for signaling rates of 1 Mbps, 10 Mbps, and 32 Mbps.
- 1/8 unit-load option available, supporting up to 256 nodes on the bus.
- Bus-pin short-circuit protection from –7 V to 12 V.
- Low-current standby mode with a typical current of 1 µA.
- Open-circuit, idle-bus, and shorted-bus fail-safe receiver.
- Thermal shutdown protection and glitch-free power-up and power-down protection for hot-plugging applications.
- SN75176 footprint compatibility.
Applications
- Digital motor control.
- Utility meters.
- Chassis-to-chassis interconnects.
- Electronic security stations.
- Industrial process control.
- Building automation.
- Point-of-Sale (POS) terminals and networks.
- Down-hole drilling and high-temperature environments.
Q & A
- What is the operating voltage range of the SN65HVD11D?
The SN65HVD11D operates with a supply voltage range of 3.0 V to 3.6 V.
- What are the supported signaling rates for the SN65HVD11D?
The device supports signaling rates of 1 Mbps, 10 Mbps, and 32 Mbps.
- What is the ESD protection level of the SN65HVD11D?
The bus pins have ESD protection exceeding ±16 kV Human Body Model (HBM).
- How many nodes can be supported on the bus with the SN65HVD11D?
The device supports up to 256 nodes on the bus with the 1/8 unit-load option.
- What is the typical standby current of the SN65HVD11D?
The typical standby current is 1 µA.
- Does the SN65HVD11D have thermal shutdown protection?
- What are the package types available for the SN65HVD11D?
The device is available in SOIC (8), PDIP (8), and CFP (8) packages.
- Is the SN65HVD11D compatible with the SN75176 footprint?
- What are some common applications of the SN65HVD11D?
- Does the SN65HVD11D support hot-plugging applications?
