THVD1429DR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments THVD1429DR is a 3.3 V to 5 V RS-485/RS-422 line transceiver with integrated surge protection and differential Schmitt trigger inputs in an 8-pin SOP package. Compliant with EIA-485-A and TIA-485-A standards for robust half-duplex communications over long cable runs. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- THVD1429DR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.2500(MOQ 62)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of THVD1429DR?
- 3.3 V to 5 V wide supply range with integrated surge protection, enabling direct RS-485 bus connection in harsh industrial environments
- Differential Schmitt trigger receiver inputs for superior noise immunity on long-distance multi-drop bus cables
- EIA-485-A / TIA-485-A compliant half-duplex transceiver in compact 8-pin SOP with RoHS-compliant (JESD-609 e4) Pb-free construction
What is THVD1429DR used for?
The THVD1429DR is suited for industrial RS-485 multi-drop networks such as Modbus RTU, PROFIBUS, and BACnet field buses where cable runs extend up to 1200 meters and surge events from lightning or switching transients are a concern. Its integrated surge protection eliminates the need for external protection components, reducing BOM cost in building automation controllers, motor drives, and programmable logic controllers. The 3.3 V to 5 V supply compatibility also simplifies interfacing between legacy 5 V PLCs and modern 3.3 V microcontrollers.
What are the specifications of THVD1429DR?
| Pbfree Code | Yes |
| Date Of Intro | 2018-11-11 |
| YTEOL | 15 |
| Differential Output | YES |
| Driver Number of Bits | 1 |
| Input Characteristics | DIFFERENTIAL SCHMITT TRIGGER |
| Interface IC Type | LINE TRANSCEIVER |
| Interface Standard | EIA-485-A; TIA-485-A |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Out Swing-Min | 1.5V |
| Output Characteristics | 3-STATE |
| Output Low Current-Max | 0.008A |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Receive Delay-Max | 45ns |
| Receiver Number of Bits | 1 |
| Supply Current-Max | 3mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3.3V |
| Supply Voltage1-Max | 5.5V |
| Supply Voltage1-Min | 3V |
| Supply Voltage1-Nom | 3.3V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Nickel/Palladium/Gold/Silver (Ni/Pd/Au/Ag) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Transmit Delay-Max | 25ns |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the THVD1429DR datasheet?
THVD1429DR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for THVD1429DR?
Compatible alternatives and drop-in replacements for THVD1429DR:
Frequently Asked Questions
What supply voltage range does THVD1429DR support, and how does it interface between 3.3 V and 5 V systems?
THVD1429DR operates from 3.3 V to 5 V, allowing direct connection to both legacy 5 V TTL microcontrollers and modern 3.3 V CMOS devices without level-shifting components. The driver output levels conform to EIA-485-A, producing a differential output voltage of at least 1.5 V into a 54 Ω termination load, ensuring reliable signal margin across Modbus or DMX512 bus configurations spanning up to 1200 meters.
How does the integrated surge protection in THVD1429DR reduce external component requirements?
The built-in surge protection clamps bus transients on both the A and B differential pins, replacing up to 4 discrete TVS diodes typically required in unprotected RS-485 designs. This internal protection meets IEC 61000-4-2 ESD immunity levels and significantly reduces the BOM for outdoor or long-cable industrial installations such as building automation HVAC controllers, eliminating at least 4 components and saving approximately 20 mm² of PCB area.
Which industrial field bus protocols can THVD1429DR support in a half-duplex configuration?
THVD1429DR is compatible with Modbus RTU, RS-485 multi-drop PROFIBUS segments, BACnet MS/TP, and DMX512 lighting control networks, all of which use half-duplex differential signaling at data rates from 9600 bps up to 10 Mbps. The differential Schmitt trigger receiver with hysteresis rejects common-mode noise up to ±7 V on the bus lines, which is essential for 32-node multi-drop segments carrying baud rates of 115200 bps across 200-meter cable runs.
What package does THVD1429DR use, and when was it introduced to the market?
THVD1429DR is housed in an 8-pin SOP (JESD-30 code R-PDSO-G8) with 1.27 mm pin pitch, introduced on 2018-11-11. The compact SOP-8 footprint of approximately 5 mm × 4 mm fits easily on tight PCBs such as RS-485 isolator daughter cards or DIN-rail module sub-boards, and the Pb-free, RoHS-compliant construction meets the environmental requirements of modern industrial product certifications.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 62+ | $3.2638 | $202.36 |
| 80+ | $3.1550 | $252.40 |
| 100+ | $2.4664 | $246.64 |
| 250+ | $2.3398 | $584.96 |
| 500+ | $2.3241 | $1162.04 |
| 1000+ | $2.2500 | $2250.00 |
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