3.3-V to 5-V RS-485 transceiver with surge protection
Product details
Parameters
Package | Pins | Size
Features
- Meets or Exceeds the Requirements of the TIA/EIA-485A Standard
- 3 V to 5.5 V Supply Voltage
- Bus I/O Protection
- ± 16 kV HBM ESD
- ± 8 kV IEC 61000-4-2 Contact Discharge
- ± 30 kV IEC 61000-4-2 Air-Gap Discharge
- ± 4 kV IEC 61000-4-4 Electrical Fast Transient
- ± 2.5 kV IEC 61000-4-5 1.2/50-µs Surge
- Available in Two Speed Grades
- THVD1419: 250 kbps
- THVD1429: 20 Mbps
- Extended Ambient
Temperature Range: -40°C to 125°C - Extended Operational
Common-Mode Range: ± 12 V - Receiver Hysteresis for Noise Rejection: 30 mV
- Low Power Consumption
- Standby Supply Current: < 2 µA
- Current During Operation: < 3 mA
- 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)
- Industry Standard 8-Pin SOIC
for Drop-in Compatibility
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Description
THVD1419 and THVD1429 are half-duplex RS-485 transceivers with integrated surge protection. Surge protection is achieved by integrating transient voltage suppressor (TVS) diodes in the standard 8-pin SOIC (D) package. This feature provides a substantial increase in reliability for better immunity to noise transients coupled to the data cable, eliminating the need for external protection components.
Each of these devices operates from a single 3.3 V or 5 V supply. The devices in this family feature a wide common-mode voltage range which makes them suitable for multi-point applications over long cable runs.
The THVD1419 and THVD1429 devices are available in the industry standard SOIC package for easy drop-in without any PCB changes. These devices are characterized over ambient free-air temperatures from –40°C to 125°C.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | THVD14x9 3.3-V to 5-V RS-485 transceivers with surge protection datasheet (Rev. C) | Mar. 19, 2019 |
Technical articles | Frequently asked questions and answers for RS-485 transceivers | Apr. 09, 2019 | |
Technical articles | Can your RS-485 communication survive the great outdoors? | Mar. 29, 2019 | |
Application note | Signal Integrity versus Data Rate and Cable Length for RS-485 Transceivers | Dec. 05, 2018 | |
User guide | RS-485 Half-Duplex EVM User's Guide (Rev. B) | Jun. 12, 2013 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
The EVM lets you quickly, easily and accurately evaluate TI's family of RS-485 products.
Hardware:- RS-485 half-duplex EVM PWB
- Screw-type SMA jacks and Bergstik headers serve as the I/O connections
- Banana jacks serve as the DC power input terminals
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOIC (D) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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