Overview
The THVD1452DGSR is a part of the THVD14xx family of RS-485/RS-422 transceivers designed by Texas Instruments. These devices are engineered to operate in rugged industrial environments, offering robust protection against high levels of electrical fast transients (EFT) and electrostatic discharges (ESD). The THVD1452DGSR operates from a single supply voltage between 3 V and 5.5 V, making it versatile for various applications. It features an extended common-mode voltage range, which is suitable for multi-point applications over long cable runs. This device is available in a small VSSOP package, saving board space and providing drop-in compatibility with other SOIC packages.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | -0.5 | 7 | V | |
| Bus Voltage Range | -18 | 18 | V | |
| Signaling Rate | 50 | Mbps | ||
| Operating Ambient Temperature | -40 | 125 | °C | |
| Junction Temperature | -40 | 150 | °C | |
| Driver Differential Output Voltage (|VOD|) | 1.5 | 3.5 | V | |
| Input Threshold Hysteresis (VHYS) | 30 | mV | ||
| Supply Current (ICC) - Driver and Receiver Enabled | 2.4 | 3 | mA | |
| Standby Supply Current | 0.1 | 1 | µA |
Key Features
- Compatibility with 3 V to 5.5 V supply voltage.
- Differential output exceeds 2.1 V for PROFIBUS compatibility.
- Robust ESD protection: ±18 kV IEC 61000-4-2 contact discharge, ±25 kV IEC 61000-4-2 air-gap discharge, and ±4 kV IEC 61000-4-4 fast transient burst.
- Extended operational common-mode range: ±15 V.
- Low EMI with data rates up to 50 Mbps.
- Large receiver hysteresis for noise rejection.
- Low power consumption with standby current < 1 µA.
- Glitch-free power-up/down for hot plug-in capability.
- Open, short, and idle bus failsafe.
- 1/8 unit load (up to 256 bus nodes).
- Small-size VSON and VSSOP packages for space-constrained applications.
Applications
- Motor Drives
- Factory Automation & Control
- Grid Infrastructure
- Building Automation
- HVAC Systems
- Video Surveillance
- Process Analytics
- Wireless Infrastructure
Q & A
- What is the operating supply voltage range of the THVD1452DGSR? The THVD1452DGSR operates from a single supply voltage between 3 V and 5.5 V.
- What are the data rates supported by the THVD1452DGSR? The device supports data rates up to 50 Mbps.
- What kind of ESD protection does the THVD1452DGSR offer? The device offers robust ESD protection including ±18 kV IEC 61000-4-2 contact discharge, ±25 kV IEC 61000-4-2 air-gap discharge, and ±4 kV IEC 61000-4-4 fast transient burst.
- What is the extended common-mode voltage range of the THVD1452DGSR? The device has an extended common-mode voltage range of ±15 V.
- How does the THVD1452DGSR handle bus failsafe conditions? The device features open, short, and idle bus failsafe, ensuring the receiver output remains logic high under these conditions without the need for external failsafe biasing resistors.
- What is the standby current of the THVD1452DGSR when both driver and receiver are disabled? The standby current is less than 1 µA when both driver and receiver are disabled.
- What are the package options available for the THVD1452DGSR? The device is available in VSSOP and SOIC packages.
- What is the operating ambient temperature range of the THVD1452DGSR? The device operates over an ambient temperature range from –40°C to 125°C.
- Does the THVD1452DGSR support hot plug-in capability? Yes, the device features glitch-free power-up/down for hot plug-in capability.
- How many bus nodes can the THVD1452DGSR support? The device can support up to 256 bus nodes as a 1/8 unit load.
