THVD1426DRLR Texas Instruments Integrated Circuit (SO Transistor Flat Lead) In Stock
Texas Instruments THVD1426DRLR is a 3.3V to 5V, 12-Mbps half-duplex RS-485/RS-422 transceiver with automatic direction control and plus-minus 12-kV IEC ESD protection. Features differential Schmitt-trigger inputs and a compact SOT-23 flat-lead package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SO Transistor Flat Lead
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- THVD1426DRLR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.0800(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
- Auto-direction control eliminates manual RE/DE pin toggling, simplifying half-duplex RS-485 bus designs
- 12 Mbps data rate supports high-speed industrial communication over RS-485 and RS-422 links
- ±12 kV IEC 61000-4-2 ESD protection on bus pins prevents field failures in harsh industrial environments
Applications
The THVD1426DRLR is well suited for industrial automation networks, PLCs, and building automation systems that use RS-485 multi-drop buses at distances up to 1200 m. Its auto-direction feature makes it ideal for microcontroller-driven UART-to-RS-485 bridges where software direction control is undesirable. The device also fits smart-meter communication links and factory fieldbus nodes requiring robust ESD immunity.
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 | 75ns |
| 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 | 35ns |
| 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 THVD1426DRLR:
Frequently Asked Questions
What maximum data rate does the THVD1426DRLR support on an RS-485 bus?
The THVD1426DRLR supports a maximum data rate of 12 Mbps, making it one of the faster half-duplex RS-485 transceivers in its class. This speed is sufficient for high-throughput industrial protocols over cable runs up to several hundred metres when proper termination of 120 ohm is applied.
Which supply voltage range is compatible with the THVD1426DRLR, and does it support mixed-voltage systems?
The device operates from a supply voltage of 3.3 V to 5 V, allowing direct connection to both 3.3 V microcontrollers and legacy 5 V logic systems. This wide range removes the need for level-shifting circuitry in mixed-voltage RS-485 networks, reducing BOM cost and board space.
How does the automatic direction control in the THVD1426DRLR benefit a UART-to-RS-485 bridge design?
Auto-direction control monitors the driver input and automatically enables the transmitter when data is present, then switches to receive mode within 1 µs of the last bit. This eliminates the GPIO pin and firmware timing overhead normally needed to toggle RE/DE signals, which is critical for half-duplex links running at 12 Mbps where direction-switching latency is a bottleneck.
What ESD protection level does the THVD1426DRLR provide on its bus pins?
Bus pins are protected to ±12 kV per the IEC 61000-4-2 contact-discharge test standard, and up to ±15 kV using the human-body model (HBM). This level of protection is mandatory in industrial field installations where cables may accumulate static charge, significantly reducing the risk of transceiver damage during hot-plug events or cable-routing activities.
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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.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $1.3189 | $131.89 |
| 250+ | $1.2440 | $310.99 |
| 500+ | $1.2041 | $602.06 |
| 1000+ | $1.1800 | $1180.00 |
| 2000+ | $1.1400 | $2280.00 |
| 4000+ | $1.0800 | $4320.00 |
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