THVD1406DRLR Texas Instruments Integrated Circuit (SO Transistor Flat Lead) In Stock
THVD1406DRLR is a 3.3 V to 5 V half-duplex RS-485 and RS-422 transceiver IC with auto-direction control and 12 kV IEC 61000-4-2 ESD protection in an 8-pin SOT-23 flat lead package supporting up to 500 kbps data rate. It eliminates DE/RE direction control signals in half-duplex networks, simplifying firmware. Available in stock with worldwide shipping from authorized distributors.
- Manufacturer
- Texas Instruments
- Package
- SO Transistor Flat Lead
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- THVD1406DRLR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.9876(MOQ 100)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Automatic direction control eliminates RE/DE pin toggling in half-duplex RS-485 networks, reducing firmware complexity with zero propagation delay overhead
- 12 kV IEC 61000-4-2 ESD protection on bus pins exceeds the standard 2 kV requirement, enabling direct connection to field wiring without external TVS diodes
- Operates from 3.3 V to 5 V supply with differential Schmitt trigger inputs for reliable reception in noisy industrial environments at up to 500 kbps
Applications
THVD1406DRLR is used in industrial sensor networks and MODBUS RTU controllers where half-duplex RS-485 auto-direction control simplifies microcontroller firmware by removing manual DE/RE pin toggling. It suits building automation BACnet MS/TP nodes and energy meter communication interfaces that must meet IEC 61000-4-2 Level 4 ESD requirements for direct field bus connection. The device also fits space-constrained industrial IoT gateway designs benefiting from its compact 8-pin SOT-23 footprint alongside a 32-bit MCU.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Differential Output | YES |
| Driver Number of Bits | 1 |
| High Level Input Current-Max | 0.0001A |
| Input Characteristics | DIFFERENTIAL SCHMITT TRIGGER |
| Interface IC Type | LINE TRANSCEIVER |
| Interface Standard | EIA-422; EIA-485-A; TIA-485-A |
| JESD-30 Code | R-PDSO-F8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Out Swing-Min | 1.5V |
| Output Characteristics | DIFFERENTIAL |
| Output Low Current-Max | 0.004A |
| Output Polarity | COMPLEMENTARY |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | FL8,.05,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Receive Delay-Max | 110ns |
| Receiver Number of Bits | 1 |
| Supply Current-Max | 3mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 5V |
| Supply Voltage1-Max | 5.5V |
| Supply Voltage1-Min | 3V |
| Supply Voltage1-Nom | 5V |
| Surface Mount | YES |
| Technology | BICMOS |
| Terminal Finish | Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Transmit Delay-Max | 500ns |
| Package | SO Transistor Flat Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Philippines |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for THVD1406DRLR:
Frequently Asked Questions
How does THVD1406DRLR auto-direction control work and what data rate does it support on RS-485 networks?
THVD1406DRLR automatically enables the transmitter when the UART TX line is driven low and switches back to receive mode within the propagation delay period, supporting half-duplex RS-485 at data rates up to 500 kbps without any GPIO toggling. This allows direct UART-to-RS-485 interfacing with no firmware changes compared to manual DE/RE controlled transceivers.
Which industrial applications benefit most from THVD1406DRLR's 12 kV IEC 61000-4-2 ESD protection on its bus pins?
Factory floor sensor wiring, outdoor building automation RS-485 trunks, and energy metering bus connections all benefit from 12 kV ESD protection because those environments generate electrostatic discharge events exceeding 8 kV during cable plug-and-unplug operations. Standard transceivers rated only 2 kV fail in these conditions, whereas THVD1406DRLR survives contact discharge at 8 kV and air discharge at 15 kV per IEC 61000-4-2 testing.
Can THVD1406DRLR operate in a mixed 3.3 V MCU and 5 V RS-485 bus system without level shifters?
Yes, THVD1406DRLR supports a supply voltage range of 3.3 V to 5 V and accepts UART logic inputs compatible with 3.3 V CMOS logic while driving RS-485 differential outputs at the selected VCC level. A 3.3 V MCU can connect its UART TX and RX directly to THVD1406DRLR powered at 3.3 V, eliminating level shifters and reducing the component count by 2 to 4 parts.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $1.2041 | $120.41 |
| 250+ | $1.1347 | $283.67 |
| 500+ | $1.0940 | $546.98 |
| 1000+ | $1.0700 | $1070.00 |
| 4000+ | $0.9950 | $3980.00 |
| 8000+ | $0.9876 | $7900.96 |
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