Overview
The SN65HVD11HD device, produced by Texas Instruments, is a 3.3-V RS-485 transceiver that combines a 3-state differential line driver and differential input line receiver. It operates with a single 3.3-V power supply and is designed for balanced transmission lines, meeting or exceeding ANSI TIA/EIA-485-A and ISO 8482:1993 standards. This transceiver is suitable for bidirectional data communication on multipoint bus-transmission lines and features active-high and active-low enables for direction control.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (8-pin) | |
| Operating Temperature Range | -55 to 175 | °C |
| Supply Voltage | 3 to 3.6 | V |
| Differential Load Resistance | 54 to 60 | Ω |
| Differential Load Capacitance | 50 | pF |
| Signaling Rate | Up to 32 Mbps | |
| ESD Protection | ±16 kV HBM | |
| Bus-Pin Short Circuit Protection | -7 V to 12 V |
Key Features
- Operates with a single 3.3-V power supply.
- Bus-pin ESD protection exceeds 16-kV Human-Body Model (HBM).
- 1/8 unit-load option available, supporting up to 256 nodes on the bus.
- Optional driver output transition times for signaling rates of 1 Mbps, 10 Mbps, and 32 Mbps.
- Based on ANSI TIA/EIA-485-A and ISO 8482:1993 standards.
- Bus-pin short circuit protection from -7 V to 12 V.
- Open-circuit, idle-bus, and shorted-bus fail-safe receiver.
- Glitch-free power-up and power-down protection for hot-plugging applications.
- SN75176 footprint compatibility.
- Supports extreme temperature applications with a range of -55°C to 175°C.
Applications
- Down-hole drilling.
- High temperature environments.
- Digital motor controls.
- Utility meters.
- Chassis-to-chassis interconnects.
- Electronic security stations.
- Industrial process controls.
- Building automation.
- Point-of-Sale (POS) terminals and networks).
Q & A
- What is the operating voltage of the SN65HVD11HD?
The SN65HVD11HD operates with a single 3.3-V power supply, with a voltage range of 3 to 3.6 V).
- What are the key standards that the SN65HVD11HD complies with?
The device meets or exceeds ANSI TIA/EIA-485-A and ISO 8482:1993 standards).
- What is the ESD protection level of the SN65HVD11HD?
The device has bus-pin ESD protection that exceeds 16-kV Human-Body Model (HBM)).
- What is the maximum number of nodes supported on the bus?
The 1/8 unit-load option allows for up to 256 nodes on the bus).
- What are the available signaling rates for the SN65HVD11HD?
The device supports signaling rates of 1 Mbps, 10 Mbps, and 32 Mbps).
- What is the operating temperature range of the SN65HVD11HD?
The device operates in a temperature range of -55°C to 175°C).
- Does the SN65HVD11HD have fail-safe receiver features?
Yes, the device has open-circuit, idle-bus, and shorted-bus fail-safe receiver features).
- Is the SN65HVD11HD suitable for hot-plugging applications?
Yes, it has glitch-free power-up and power-down protection for hot-plugging applications).
- What is the footprint compatibility of the SN65HVD11HD?
The device is compatible with the SN75176 footprint).
- What are some common applications of the SN65HVD11HD?
Common applications include down-hole drilling, digital motor controls, utility meters, and industrial process controls).
