Overview
The SN65HVD72DRBT is a 3.3-V supply RS-485 line transceiver manufactured by Texas Instruments. This device is designed for demanding industrial applications and features robust 3.3-V drivers and receivers in a compact package. It is suitable for half-duplex (two-wire bus) communication and offers high levels of ESD protection, making it ideal for multi-point applications over long cable runs. The device operates over an extended industrial temperature range of –40°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SON (DRB) | |
| Pin Count | 8 | |
| Dimensions | 3.15 x 3.15 x 1 mm | |
| Operating Temperature Range | –40 to 125 | °C |
| Supply Voltage | 3 to 3.6 | V |
| Signaling Rate | 250 kbps | |
| Differential Load Resistance | 54 to 60 | Ω |
| Differential Load Capacitance | 50 pF | |
| ESD Protection | ±15 kV HBM, ±12 kV IEC 61000-4-2, ±4 kV IEC 61000-4-4 |
Key Features
- Small-size VSSOP and SOIC packages for board space savings and drop-in compatibility.
- Bus I/O protection with high ESD protection levels (±15 kV HBM, ±12 kV IEC 61000-4-2, ±4 kV IEC 61000-4-4).
- Extended industrial temperature range of –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 (< 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 SN65HVD72DRBT is suitable for various industrial and commercial applications, including:
- Industrial automation and control systems.
- Multi-point data transmission over long cable runs.
- RS-485 communication networks.
- Automotive and aerospace systems requiring robust ESD protection.
- Building automation and control systems.
Q & A
- What is the operating temperature range of the SN65HVD72DRBT?
The operating temperature range is –40°C to 125°C.
- What type of package does the SN65HVD72DRBT come in?
The device comes in an 8-pin SON (DRB) package.
- What is the signaling rate of the SN65HVD72DRBT?
The signaling rate is optimized for 250 kbps.
- Does the SN65HVD72DRBT have ESD protection?
Yes, it has high levels of ESD protection, including ±15 kV HBM, ±12 kV IEC 61000-4-2, and ±4 kV IEC 61000-4-4.
- Is the SN65HVD72DRBT compatible with 5-V logic inputs?
Yes, it is 5-V tolerant and compatible with 3.3-V or 5-V controllers.
- What is the typical power consumption of the SN65HVD72DRBT?
The device has low power consumption with a quiescent current of less than 1 mA and a standby supply current of less than 2 µA.
- Can the SN65HVD72DRBT be used in multi-point applications?
Yes, it is suitable for multi-point applications over long cable runs due to its wide common-mode voltage range.
- Does the SN65HVD72DRBT have noise rejection features?
Yes, it features large receiver hysteresis (80 mV) for noise rejection.
- How many nodes can be connected using the SN65HVD72DRBT?
The device allows over 200 connected nodes due to its low unit-loading.
- Is the SN65HVD72DRBT glitch-free during power-up and power-down?
Yes, it has glitch-free power-up and power-down bus inputs and outputs.
