Overview
The SN65HVD11DR 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 suitable for balanced transmission lines and meets or exceeds the requirements of ANSI TIA/EIA-485-A and ISO 8482:1993 standards. The transceiver is ideal 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 |
|---|---|---|
| Supply Voltage | 3.0 to 3.6 | V |
| Operating Temperature Range | -40 to 85 | °C |
| Package Type | 8-Pin SOIC | |
| Signaling Rates | 1 Mbps, 10 Mbps, 32 Mbps | |
| Bus-Pin ESD Protection | ±16 kV HBM | |
| Bus-Pin Short Circuit Protection | -7 V to 12 V | |
| Standby Supply Current | 1 µA (typical) | |
| Differential Load Resistance | 54 to 60 Ω | |
| Differential Load Capacitance | 50 pF |
Key Features
- Operates with a single 3.3-V power 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.
- SN75176 footprint.
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 SN65HVD11DR?
The SN65HVD11DR operates with a single 3.3-V power supply. - What are the signaling rates supported by the SN65HVD11DR?
The device supports signaling rates of 1 Mbps, 10 Mbps, and 32 Mbps. - What is the ESD protection level of the SN65HVD11DR?
The bus-pin ESD protection exceeds 16-kV HBM. - What is the maximum number of nodes supported on the bus?
The 1/8 unit-load option allows up to 256 nodes on the bus. - Does the SN65HVD11DR have thermal shutdown protection?
Yes, the device features thermal shutdown protection. - What is the standby supply current of the SN65HVD11DR?
The standby supply current is typically 1 µA. - Is the SN65HVD11DR suitable for hot-plugging applications?
Yes, it features glitch-free power-up and power-down protection for hot-plugging applications. - What standards does the SN65HVD11DR comply with?
The device meets or exceeds the requirements of ANSI TIA/EIA-485-A and ISO 8482:1993. - What is the operating temperature range of the SN65HVD11DR?
The operating temperature range is -40°C to 85°C. - What type of package is the SN65HVD11DR available in?
The device is available in an 8-Pin SOIC package.
