Overview
The THVD1552DGS is a part of the THVD15xx family of noise-immune 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 IEC electrical fast transients (EFT) and IEC electrostatic discharge (ESD) events. This eliminates the need for additional system-level protection components. The THVD1552DGS operates from a single 5-V supply and features an extended common-mode voltage range, making it suitable for multi-point applications over long cable runs. It is available in small VSSOP packages, ideal for space-constrained applications, and is characterized over ambient free-air temperatures from –40°C to 125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Package | VSSOP (DGS) - 10 pins |
| Operating Temperature Range | -40°C to 125°C |
| Supply Voltage | 4.5 V to 5.5 V |
| ESD Protection | ± 30 kV HBM, ± 18 kV IEC 61000-4-2 Contact Discharge, ± 25 kV IEC 61000-4-2 Air-Gap Discharge |
| Electrical Fast Transient (EFT) | ± 4 kV IEC 61000-4-4 |
| Common-mode Voltage Range | ± 15 V |
| Data Rates | 500 kbps and 50 Mbps |
| Standby Supply Current | < 1 µA |
| Operating Current | < 1 mA |
| Package Size | 3.00 mm × 3.00 mm |
Key Features
- Meets or exceeds the requirements of the TIA/EIA-485A standard
- Integrated bus I/O protection
- Low EMI at 500 kbps and 50 Mbps data rates
- Large receiver hysteresis for noise rejection
- Low power consumption
- Glitch-free power-up/down for hot plug-in capability
- Open, short, and idle bus failsafe
- 1/8 unit load options (up to 256 bus nodes)
- Small-size VSSOP packages save board space or SOIC for drop-in compatibility
Applications
- HVAC Systems
- Video Surveillance
- Process Analytics
- Telecom Infrastructure
The THVD1552DGS is versatile and can be used in various industrial and communication systems where robust and reliable data transmission is crucial.
Q & A
- What is the operating temperature range of the THVD1552DGS?
The operating temperature range is from -40°C to 125°C.
- What is the supply voltage range for the THVD1552DGS?
The supply voltage range is from 4.5 V to 5.5 V.
- What level of ESD protection does the THVD1552DGS offer?
The device offers ± 30 kV HBM ESD, ± 18 kV IEC 61000-4-2 Contact Discharge, and ± 25 kV IEC 61000-4-2 Air-Gap Discharge protection.
- What are the data rates supported by the THVD1552DGS?
The device supports data rates of 500 kbps and 50 Mbps.
- Does the THVD1552DGS have any special power management features?
Yes, it has low power consumption, low standby supply current (< 1 µA), and glitch-free power-up/down for hot plug-in capability.
- What kind of packaging is available for the THVD1552DGS?
The device is available in small VSSOP packages (10 pins) and also in SOIC packages for drop-in compatibility.
- What are some common applications for the THVD1552DGS?
Common applications include HVAC systems, video surveillance, process analytics, and telecom infrastructure.
- Does the THVD1552DGS meet any specific industry standards?
Yes, it meets or exceeds the requirements of the TIA/EIA-485A standard.
- How does the THVD1552DGS handle bus failures?
The device has open, short, and idle bus failsafe features.
- What is the maximum number of bus nodes supported by the THVD1552DGS?
The device supports up to 256 bus nodes with 1/8 unit load options.
