THVD1420DRLR Texas Instruments Integrated Circuit (SO Transistor Flat Lead) In Stock
The THVD1420DRLR is a 3.3 V to 5 V RS-485/RS-422 line transceiver in an 8-pin SOT-23 flat lead package by Texas Instruments. Key specs: 12 Mbps data rate, ±12 kV IEC ESD protection, differential Schmitt trigger input. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SO Transistor Flat Lead
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- THVD1420DRLR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5190(MOQ 225)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 12 Mbps maximum data rate enabling high-speed RS-485 and RS-422 multi-drop industrial communication networks
- ±12 kV IEC 61000-4-2 ESD protection on bus pins for robust operation in harsh industrial environments
- 3.3 V to 5 V supply voltage range supporting mixed-voltage system designs without external level shifting
- 8-pin SOT-23 flat lead package (R-PDSO-F8) delivering the smallest RS-485 transceiver footprint for space-critical designs
Applications
The THVD1420DRLR is designed for industrial RS-485 and RS-422 communication buses in factory automation, building control, and process monitoring systems where high ESD immunity and compact size are critical. It is well suited for multi-drop networks with up to 32 unit loads, MODBUS RTU links operating at 12 Mbps, and long-cable industrial fieldbus installations requiring robust differential signaling.
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-485-A; TIA-485-A; EIA-422 |
| JESD-30 Code | R-PDSO-F8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Out Swing-Min | 1.5V |
| Output Characteristics | 3-STATE |
| Output Low Current-Max | 0.004A |
| Output Polarity | COMPLEMENTARY |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | FL8,.047,20 |
| 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 |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Tin (Sn) |
| Terminal Form | FLAT |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Transmit Delay-Max | 38ns |
| 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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the ±12 kV ESD protection of THVD1420DRLR protect RS-485 bus lines in industrial environments?
The THVD1420DRLR provides ±12 kV IEC 61000-4-2 ESD protection on its bus pins A and B, far exceeding the ±2 kV minimum specified in the RS-485 standard. This high protection level prevents device damage from electrostatic discharge during cable insertion or handling in harsh factory environments, reducing field failure rates and eliminating the need for external TVS diodes in most designs.
At 12 Mbps, what is the maximum cable length supported by THVD1420DRLR in an RS-485 network?
At 12 Mbps the cable length is limited by signal integrity, typically under 15 meters for standard 120 Ω twisted-pair cable. At lower baud rates such as 115200 bps the RS-485 standard supports cable runs up to 1200 meters. The THVD1420DRLR differential output with ±1.5 V minimum differential voltage ensures reliable signaling across the supported cable range.
How does the 3.3 V to 5 V supply range of THVD1420DRLR simplify mixed-voltage industrial designs?
The THVD1420DRLR operates from a single 3.3 V or 5 V supply, eliminating the need for separate power rails or level translators when interfacing a 3.3 V microcontroller to a 5 V RS-485 bus. The device logic inputs are compatible with both voltage levels, reducing BOM cost and board area in mixed-voltage industrial control systems.
What is the benefit of the differential Schmitt trigger receiver input in THVD1420DRLR for noisy bus conditions?
The THVD1420DRLR differential Schmitt trigger receiver provides built-in hysteresis of at least 50 mV, rejecting common-mode noise and small differential glitches on the RS-485 bus without requiring external filtering. This improves signal integrity on long cable runs in electrically noisy factory environments and reduces false triggering from bus reflections at 12 Mbps.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 225+ | $0.8956 | $201.51 |
| 250+ | $0.5952 | $148.80 |
| 500+ | $0.5708 | $285.41 |
| 1000+ | $0.5569 | $556.92 |
| 2000+ | $0.5330 | $1066.00 |
| 4000+ | $0.5190 | $2076.00 |
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