Overview
The THVD1406DRLR, produced by Texas Instruments, is a low-power, half-duplex RS-485 transceiver designed for industrial applications. This device is part of the THVD14x6 series, which includes the THVD1406 and THVD1426 models. The THVD1406DRLR operates within a supply voltage range of 3-V to 5.5-V and supports data transmission rates up to 500 kbps. It features auto-direction control using the data input pin, reducing the need for separate driver-enable and receiver-enable pins. This transceiver is robust, with extensive ESD protection and bus fault tolerance, making it suitable for various industrial environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 3-V to 5.5-V | V |
| Data Rate | 500 kbps | kbps |
| ESD Protection | ±16-kV HBM, ±12-kV IEC 61000-4-2 Contact Discharge, ±15-kV IEC 61000-4-2 Air Gap Discharge, ±4-kV IEC 61000-4-4 Fast Transient Burst | kV |
| Bus Fault Protection | ±16-V | V |
| Package Options | 8-Pin SOIC, 8-Pin SOT (2.1 mm x 1.2 mm) | - |
| Operating Temperature Range | -40°C to 125°C | °C |
| Standby Supply Current | 3µA (typ) | µA |
| Quiescent Current During Operation | 1.7 mA (typ) | mA |
| Receiver Hysteresis | Large for noise rejection | - |
| Unit Load | 1/8 (Up to 256 bus nodes) | - |
Key Features
- Meets or exceeds the requirements of the TIA/EIA-485A standard
- Auto-direction control using the data input pin
- Half-duplex RS-422/RS-485 operation
- Extensive ESD protection: ±16-kV HBM, ±12-kV IEC 61000-4-2 Contact Discharge, ±15-kV IEC 61000-4-2 Air Gap Discharge, ±4-kV IEC 61000-4-4 Fast Transient Burst
- ±16-V bus fault protection
- Small, space-saving 8-Pin SOT package option (2.1 mm x 1.2 mm)
- Extended industrial temperature range: -40°C to 125°C
- Large receiver hysteresis for noise rejection
- Low power consumption: Low standby supply current and quiescent current during operation
- Glitch-free power-up, power-down for hot plug-in capability
- Open, short, and idle bus fail-safe
- 1/8 Unit load (Up to 256 bus nodes)
Applications
- Factory automation and control
- Building automation
- HVAC systems
- Video surveillance
- Smart meters
Q & A
- What is the supply voltage range for the THVD1406DRLR? The supply voltage range is 3-V to 5.5-V.
- What is the maximum data transmission rate for the THVD1406DRLR? The maximum data transmission rate is 500 kbps.
- What kind of ESD protection does the THVD1406DRLR offer? The device offers ±16-kV HBM, ±12-kV IEC 61000-4-2 Contact Discharge, ±15-kV IEC 61000-4-2 Air Gap Discharge, and ±4-kV IEC 61000-4-4 Fast Transient Burst ESD protection.
- What are the package options available for the THVD1406DRLR? The device is available in 8-Pin SOIC and 8-Pin SOT (2.1 mm x 1.2 mm) packages.
- What is the operating temperature range for the THVD1406DRLR? The operating temperature range is -40°C to 125°C.
- How does the auto-direction control feature work? The auto-direction control feature uses the data input pin to control the direction of data transmission, reducing the need for separate driver-enable and receiver-enable pins.
- What is the standby supply current of the THVD1406DRLR? The standby supply current is typically 3µA.
- Does the THVD1406DRLR support hot plug-in capability? Yes, it supports glitch-free power-up and power-down for hot plug-in capability.
- What kind of bus fail-safe features does the THVD1406DRLR have? The device has open, short, and idle bus fail-safe features.
- How many bus nodes can the THVD1406DRLR support? It can support up to 256 bus nodes as a 1/8 unit load.
