Overview
The SN65HVD11-HT, specifically the SN65HVD11SHKJ model, is a 3.3-V RS-485 transceiver produced by Texas Instruments. This device combines a 3-state differential line driver and a differential input line receiver, designed to operate with a single 3.3-V power supply. It is optimized for balanced transmission lines and complies with ANSI TIA/EIA-485-A and ISO 8482:1993 standards. The transceiver is particularly suited for high-temperature environments and offers robust ESD protection and fail-safe features, making it ideal for various industrial and automotive applications.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (VCC) | -0.3 | - | 6 | V |
| Voltage at A or B | -9 | - | 14 | V |
| Input Voltage at D, DE, R, or RE | -0.5 | - | VCC + 0.5 | V |
| ESD Protection (HBM) | - | - | 16 kV | - |
| Operating Junction Temperature | -55 | - | 210 | °C |
| Signaling Rate | - | - | 1 Mbps, 10 Mbps, 32 Mbps | - |
| Differential Load Resistance | 54 | - | 60 | Ω |
| Differential Load Capacitance | - | - | 50 | pF |
| Propagation Delay Time (tPLH, tPHL) | 18 | 25 | 40 | ns |
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.
- Glitch-free power-up and power-down protection for hot-plugging applications.
- Open-circuit, idle-bus, and shorted-bus fail-safe receiver.
- Compliant with ANSI TIA/EIA-485-A and ISO 8482:1993 standards.
- Available in extreme temperature range (-55°C to 210°C).
Applications
- Down-hole drilling and high-temperature environments.
- Digital motor controls and utility meters.
- Chassis-to-chassis interconnects and electronic security stations.
- Industrial process controls and building automation.
- Point-of-Sale (POS) terminals and networks.
Q & A
- What is the operating voltage range of the SN65HVD11-HT? The operating voltage range is from 3.0 V to 3.6 V.
- What is the maximum ESD protection for the SN65HVD11-HT? The ESD protection exceeds 16-kV Human-Body Model (HBM).
- What are the supported signaling rates for the SN65HVD11-HT? The device supports signaling rates of 1 Mbps, 10 Mbps, and 32 Mbps.
- What is the maximum operating junction temperature for the SN65HVD11-HT? The maximum operating junction temperature is 210°C.
- Is the SN65HVD11-HT compliant with any industry standards? Yes, it complies with ANSI TIA/EIA-485-A and ISO 8482:1993 standards.
- What kind of fail-safe features does the SN65HVD11-HT have? It has open-circuit, idle-bus, and shorted-bus fail-safe receiver features.
- Can the SN65HVD11-HT be used in high-temperature environments? Yes, it is designed for extreme temperature applications ranging from -55°C to 210°C.
- How many nodes can be supported on the bus with the 1/8 unit-load option? Up to 256 nodes can be supported on the bus.
- Does the SN65HVD11-HT have glitch-free power-up and power-down protection? Yes, it has glitch-free power-up and power-down protection for hot-plugging applications.
- What types of applications is the SN65HVD11-HT typically used in? It is used in various applications including down-hole drilling, digital motor controls, utility meters, and industrial process controls.
