THVD1439DR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The THVD1439DR is a robust RS-485 line transceiver operating from 3 V to 5.5 V supply, featuring 4 kV surge protection and 1.8 V VIO compatibility for low-voltage logic interfaces. It is available in an 8-pin SOIC package with worldwide distribution and fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- THVD1439DR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.4400(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 THVD1439DR?
- 4 kV surge protection on RS-485 bus pins for reliable operation in electrically noisy industrial environments
- Wide supply range of 3 V to 5.5 V with 1.8 V VIO capability enabling direct interfacing to low-voltage MCUs
- Differential Schmitt trigger receiver input for superior noise immunity on long RS-485 cable runs
What is THVD1439DR used for?
The THVD1439DR is designed for RS-485 and RS-422 communication networks in industrial automation, building control systems, and smart metering where transient surge protection is essential. Its 1.8 V VIO capability makes it directly compatible with modern low-power microcontrollers and FPGAs operating at 1.8 V logic levels without level-shifting. The 4 kV surge rating protects the bus interface against lightning-induced transients and electrostatic discharge events common in long-distance fieldbus installations.
What are the specifications of THVD1439DR?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Differential Output | YES |
| Driver Number of Bits | 1 |
| High Level Input Current-Max | 0.000005A |
| 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 | DIFFERENTIAL |
| Output Low Current-Max | 0.008A |
| Output Polarity | COMPLEMENTARY |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Receive Delay-Max | 110ns |
| Receiver Number of Bits | 1 |
| Supply Current-Max | 5mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3.6V |
| Supply Voltage1-Max | 5.5V |
| Supply Voltage1-Min | 3V |
| Supply Voltage1-Nom | 3.3V |
| Surface Mount | YES |
| Technology | BICMOS |
| 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 | 650ns |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the THVD1439DR datasheet?
THVD1439DR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for THVD1439DR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How much surge protection does the THVD1439DR provide and why does it matter for industrial RS-485 networks?
The THVD1439DR integrates 4 kV surge protection on its RS-485 bus pins, guarding against transient overvoltage events caused by lightning coupling or electrostatic discharge on long cable runs. This built-in protection eliminates the need for external TVS diodes in many industrial installations, reducing BOM cost and board space while maintaining EIA-485-A compliance.
Can THVD1439DR interface directly with a 1.8 V microcontroller logic level without an external level shifter?
Yes, the THVD1439DR includes a dedicated 1.8 V VIO pin that sets the logic threshold for the driver input and receiver output independently from the RS-485 supply, which operates at 3 V to 5.5 V. This eliminates external level-shifting circuitry when connecting to 1.8 V ARM Cortex or RISC-V microcontrollers.
What differential receiver sensitivity does the THVD1439DR achieve and how does it compare on long cable runs?
The THVD1439DR uses a differential Schmitt trigger receiver that provides hysteresis for reliable data recovery in noisy environments. RS-485 bus inputs as low as 200 mV differential are correctly interpreted, which is important on cable runs of 1200 meters or more where signal attenuation reduces the differential amplitude seen at the receiver.
What package does the THVD1439DR use and how does it compare to larger RS-485 transceiver packages?
The THVD1439DR comes in an 8-pin SOIC package, one of the smallest standard form factors for single-channel RS-485 transceivers, which helps minimize PCB area in space-constrained I/O modules. The 8-pin count reflects its single-driver, single-receiver architecture, compared to multi-channel transceivers in 16-pin or larger packages that add complexity when only 1 bus channel is needed.
Related Guides
STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply
Choose the right STM32H725 variant by comparing Flash, package, pin count, temperature grade, connectivity, and production requirements.
Aug 1, 2026
STM32H725IGT3 High-Performance MCU Design Guide
Design STM32H725IGT3 systems for reliable 550 MHz operation with practical power, clock, cache, DMA, PCB, ADC, and recovery guidance.
Jul 31, 2026
150141VS73100 Violet SMD LED Selection Guide: Color, Drive, and Sourcing
Select the 150141VS73100 by wavelength, brightness, drive current, 3528 fit, reliability, and traceable sourcing requirements.
Jul 31, 2026
STEF05SGR 5 V eFuse Protection Design Guide
Design a reliable 5 V STEF05SGR eFuse stage with current-limit math, capacitor sizing, thermal analysis, fault recovery, and PCB layout guidance.
Jul 30, 2026
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+ | $3.2419 | $201.00 |
| 80+ | $3.1338 | $250.70 |
| 100+ | $2.6614 | $266.14 |
| 250+ | $2.5264 | $631.61 |
| 500+ | $2.5168 | $1258.42 |
| 1000+ | $2.4400 | $2440.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit