Overview
The Texas Instruments SN65HVD72D is a robust 3.3-V half-duplex 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 SN65HVD72D is characterized over an extended industrial temperature range of –40°C to 125°C and offers high levels of ESD protection, including Human-Body Model (HBM) and IEC Contact Discharge specifications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOIC, VSSOP, VSON | |
| Pins | 8 | |
| Operating Temperature Range | –40°C to 125°C | °C |
| Supply Voltage | 3.3 V | V |
| Common Mode Range | –7 to 12 V | V |
| Duplex | Half | |
| Fail Safe | Idle, Open, Short | |
| HBM ESD Protection | ±15 kV | kV |
| IEC 61000-4-2 Contact Discharge Protection | ±12 kV | kV |
| IEC 61000-4-4 Fast Transient Burst Protection | ±4 kV | kV |
| Signaling Rate Options | 250 kbps, 20 Mbps, 50 Mbps | |
| Quiescent Supply Current | < 1 mA | mA |
| Standby Supply Current | < 2 µA | µA |
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 Contact Discharge, ±4 kV IEC 61000-4-4 Fast Transient Burst).
- 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 supply current (< 1 mA).
- 5-V tolerant logic inputs compatible with 3.3-V or 5-V controllers.
- Signaling rate options optimized for 250 kbps, 20 Mbps, and 50 Mbps.
- Glitch-free power-up and power-down bus inputs and outputs).
Applications
- Factory automation.
- Telecommunications infrastructure.
- Motion control).
- Multi-point applications over long cable runs due to its wide common-mode voltage range).
Q & A
- What is the operating temperature range of the SN65HVD72D?
The operating temperature range is –40°C to 125°C).
- What types of ESD protection does the SN65HVD72D offer?
The device offers ±15 kV HBM, ±12 kV IEC 61000-4-2 Contact Discharge, and ±4 kV IEC 61000-4-4 Fast Transient Burst protection).
- What are the signaling rate options for the SN65HVD72D?
The signaling rate options are 250 kbps, 20 Mbps, and 50 Mbps).
- How many nodes can be connected using the SN65HVD72D?
Over 200 nodes can be connected due to low unit-loading).
- Is the SN65HVD72D compatible with 5-V logic inputs?
- What is the quiescent supply current of the SN65HVD72D?
- Does the SN65HVD72D support half-duplex communication?
- What are the common package types available for the SN65HVD72D?
- What is the common mode range of the SN65HVD72D?
- Does the SN65HVD72D have glitch-free power-up and power-down capabilities?
