Overview
The SN65HVD75D, produced by Texas Instruments, is a robust 3.3-V RS-485 transceiver designed for demanding industrial applications. This device combines a differential driver and a differential receiver, operating from a single 3.3-V power supply. It features a wide common-mode voltage range, making it suitable for multi-point applications over long cable runs. The transceiver is optimized for half-duplex (two-wire bus) communication and is characterized over an extended industrial temperature range of –40°C to 125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOIC (D), VSSOP |
| Pins | 8 |
| Operating Temperature Range (°C) | –40 to 125 |
| Supply Voltage | 3.3 V |
| Signaling Rate Options | 250 kbps, 20 Mbps, 50 Mbps |
| ESD Protection | ±15 kV HBM, ±12 kV IEC 61000-4-2, ±4 kV IEC 61000-4-4 |
| Standby Supply Current | < 2 µA |
| Quiescent Current During Operation | < 1 mA |
| Logic Input Compatibility | 5-V tolerant, compatible with 3.3-V or 5-V controllers |
Key Features
- Small-size VSSOP packages save board space, or SOIC for drop-in compatibility.
- Bus I/O protection with high levels of ESD protection (±15 kV HBM, ±12 kV IEC 61000-4-2, ±4 kV IEC 61000-4-4).
- Extended industrial temperature range: –40°C to 125°C.
- Large receiver hysteresis (80 mV) for noise rejection.
- Low unit-loading allows over 200 connected nodes.
- Low power consumption with low standby supply current (< 2 µA) and quiescent current during operation (< 1 mA).
- 5-V tolerant logic inputs compatible with 3.3-V or 5-V controllers.
- Glitch-free power-up and power-down bus inputs and outputs.
Applications
The SN65HVD75D is suitable for a variety of industrial and commercial applications, including:
- Industrial automation and control systems.
- Building automation and control systems.
- Remote sensors and data acquisition systems.
- Point-of-sale terminals and other commercial equipment.
- Any application requiring robust, high-speed RS-485 communication over long cable runs.
Q & A
- What is the operating temperature range of the SN65HVD75D?
The operating temperature range is –40°C to 125°C. - What are the signaling rate options for the SN65HVD75D?
The signaling rate options are 250 kbps, 20 Mbps, and 50 Mbps. - What level of ESD protection does the SN65HVD75D offer?
The device offers ±15 kV HBM, ±12 kV IEC 61000-4-2, and ±4 kV IEC 61000-4-4 ESD protection. - How many nodes can be connected using the SN65HVD75D?
Over 200 nodes can be connected due to low unit-loading. - Is the SN65HVD75D compatible with 5-V logic inputs?
Yes, the device is 5-V tolerant and compatible with 3.3-V or 5-V controllers. - What is the quiescent current during operation of the SN65HVD75D?
The quiescent current during operation is less than 1 mA. - Does the SN65HVD75D support half-duplex communication?
Yes, the device supports half-duplex (two-wire bus) communication. - What is the standby supply current of the SN65HVD75D?
The standby supply current is less than 2 µA. - What type of packages are available for the SN65HVD75D?
The device is available in SOIC (D) and VSSOP packages. - What is the purpose of the large receiver hysteresis in the SN65HVD75D?
The large receiver hysteresis (80 mV) is for noise rejection.
