Overview
The SN65HVD11QDR is a 3.3-V RS-485 transceiver produced by Texas Instruments. This component is part of the SN65HVD11 series, designed for bidirectional data communication on multipoint bus-transmission lines. It operates with a single 3.3-V power supply and is compliant with ANSI standard TIA/EIA-485-A and ISO 8482:1993. The transceiver features a 3-state differential line driver and a differential input line receiver, making it suitable for various industrial and commercial applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | –0.3 to 6 | V |
| Signaling Rate | 10 Mbps | |
| Unit Load | 1/8 | |
| Operating Temperature Range | –40°C to 125°C | °C |
| Bus-Pin ESD Protection | >16 kV HBM | |
| Bus-Pin Short-Circuit Protection | –7 V to 12 V | V |
| Standby Supply Current | 1 µA (typical) | µA |
| Differential Load Resistance | 54 to 60 Ω | Ω |
| Differential Load Capacitance | 50 pF | pF |
| Junction Temperature | 145 °C | °C |
Key Features
- Operates with a 3.3-V supply.
- Bus-pin ESD protection exceeds 16-kV HBM.
- 1/8 Unit-load option available (up to 256 nodes on the bus).
- Optional driver output transition times for signaling rates of 1 Mbps, 10 Mbps, and 32 Mbps.
- Meets or exceeds the requirements of ANSI TIA/EIA-485-A and ISO 8482:1993.
- Bus-pin short-circuit protection from –7 V to 12 V.
- Low-current standby mode: 1 µA, typical.
- Open-circuit, idle-bus, and shorted-bus fail-safe receiver.
- Thermal shutdown protection.
- Glitch-free power-up and power-down protection for hot-plugging applications.
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.
Q & A
- What is the operating voltage of the SN65HVD11QDR?
The SN65HVD11QDR operates with a 3.3-V supply.
- What is the maximum signaling rate of the SN65HVD11QDR?
The maximum signaling rate of the SN65HVD11QDR is 10 Mbps.
- What is the unit load capability of the SN65HVD11QDR?
The SN65HVD11QDR has a 1/8 unit-load option, allowing up to 256 nodes on the bus.
- Does the SN65HVD11QDR have ESD protection?
Yes, the SN65HVD11QDR has bus-pin ESD protection that exceeds 16-kV HBM.
- What are the operating temperature ranges for the SN65HVD11QDR?
The operating temperature range for the SN65HVD11QDR is –40°C to 125°C.
- Does the SN65HVD11QDR support hot-plugging applications?
Yes, the SN65HVD11QDR has glitch-free power-up and power-down protection for hot-plugging applications.
- What kind of receiver fail-safe features does the SN65HVD11QDR have?
The SN65HVD11QDR has open-circuit, idle-bus, and shorted-bus fail-safe receiver features.
- What is the standby supply current of the SN65HVD11QDR?
The standby supply current of the SN65HVD11QDR is 1 µA (typical).
- Does the SN65HVD11QDR have thermal shutdown protection?
Yes, the SN65HVD11QDR has thermal shutdown protection.
- What are some common applications of the SN65HVD11QDR?
Common applications include digital motor control, utility meters, chassis-to-chassis interconnects, electronic security stations, industrial process control, building automation, and point-of-sale (POS) terminals and networks.
