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Texas Instruments SN65HVD72DRBT
- Part No.:
- SN65HVD72DRBT
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
SN65HVD72DRBT.pdf
- Description:
- IC TRANSCEIVER HALF 1/1 8SON
- Quantity:
- Payment:
- Shipping:
Inventory:6,795
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Product details
Overview
SN65HVD72DRBT from Texas Instruments is a 3.3-V half-duplex RS-485 transceiver in an 8-pin VSON (DRB) package, featuring ±12 kV IEC 61000-4-2 contact ESD protection, 80 mV receiver hysteresis, and 250 kbps signaling rate. It supports industrial automation networks with robust bus I/O, low standby current (<2 µA), and operation from –40°C to 125°C.
For engineers reviewing the SN65HVD72DRBT datasheet, SN65HVD72DRBT pinout, SN65HVD72DRBT application, or SN65HVD72DRBT equivalent, this page delivers verified electrical specs, thermal metrics, enable/disable timing, bus fault tolerance, and real-world implementation guidance for factory automation and motion control systems.
Technical Context
The SN65HVD72DRBT integrates a single 3.3-V driver and receiver in half-duplex configuration, with internally connected A/B bus terminals. Its differential outputs and inputs operate over a wide common-mode range (–7 V to 12 V), enabling reliable multi-point communication across long cable runs.
It implements active-high driver enable (DE) and active-low receiver enable (RE), supporting controlled bus access and low-power standby modes. Glitch-free power-up/power-down behavior prevents bus contention during supply transitions, and thermal shutdown activates at 170°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Signaling Rate | Up to 250 kbps - supports legacy industrial fieldbus speeds with margin for noise immunity |
| Supply Voltage | 3.0 V to 3.6 V - compatible with standard 3.3-V logic rails; absolute max 5 V |
| Receiver Hysteresis | 80 mV - rejects common-mode noise and improves signal integrity on noisy factory floors |
| ESD Protection | ±12 kV IEC 61000-4-2 contact - eliminates need for external TVS diodes on bus lines |
| Quiescent Current | <2 µA standby, 750–950 µA active - enables always-on monitoring in energy-constrained nodes |
| Common-Mode Range | –7 V to +12 V - tolerates ground potential differences across distributed systems |
| Driver Output Voltage | 1.5–2.0 V differential into 54 Ω - meets RS-485 standard minimum output swing |
Pinout & Package
The SN65HVD72DRBT uses an 8-pin VSON (DRB) package measuring 3.0 mm × 3.0 mm with exposed thermal pad, optimized for high-density PCB layouts and thermal performance (RθJB = 15.5°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (R) | Receiver output | Digital logic-level output reflecting bus state; open-drain compatible with 3.3-V/5-V controllers |
| 2 (RE) | Active-low receiver enable | Pulls receiver into high-impedance when high; enables input sampling when low |
| 3 (DE) | Active-high driver enable | Enables differential driver output when high; disables output (high-Z) when low |
| 4 (D) | Driver data input | Logic-level input controlling polarity of A/B differential output pair |
| 5 (GND) | Local ground reference | Return path for internal circuitry; must be tied to system ground with low-inductance connection |
| 6 (A) | Bus I/O (non-inverting) | Half of differential bus interface; voltage swings relative to B to encode logic states |
| 7 (B) | Bus I/O (inverting) | Complementary bus terminal; forms differential pair with A for noise-rejecting transmission |
| 8 (VCC) | 3.3-V power supply | Primary supply for internal logic and analog circuitry; requires local 100-nF bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 Contact ESD Protection | ±12 kV on A/B/GND - eliminates external protection components in harsh EMI environments |
| Low Standby Supply Current | <2 µA - enables battery-backed or ultra-low-power remote sensor nodes |
| Glitch-Free Power Sequencing | No bus contention during VCC ramp-up/down - prevents spurious transmissions during brownouts |
| Wide Common-Mode Input Range | –7 V to +12 V - accommodates ground offsets up to 19 V between nodes in multi-drop networks |
| Thermal Shutdown Protection | Activates at 170°C junction temperature - prevents latch-up or permanent damage under overload |
Applications
| Factory Automation | Telecommunications Infrastructure |
|---|---|
Use Scenario: PLC-to-I/O module communication over 100+ meter twisted-pair cabling in electrically noisy plant environments. IC Role / Device Role / Timing Role: Half-duplex RS-485 transceiver managing bidirectional data exchange between controller and distributed sensors/actuators. Use Value: 80 mV receiver hysteresis and ±12 kV ESD withstand ensure error-free operation despite motor drive noise and frequent handling discharge events. |
Use Scenario: Backplane interconnect between line cards in carrier-grade base station cabinets with mixed-voltage subsystems. IC Role / Device Role / Timing Role: Level-shifting RS-485 interface bridging 3.3-V FPGA control logic to legacy 5-V management buses. Use Value: 5-V tolerant logic inputs allow direct connection to diverse host controllers without level translators. |
| Motion Control Systems | Building Management Networks |
Use Scenario: Synchronized servo drive coordination via daisy-chained RS-485 network in CNC machinery with high dv/dt switching noise. IC Role / Device Role / Timing Role: Robust physical layer transceiver providing deterministic 250-kbps command/response timing between master controller and axis drives. Use Value: Large common-mode range (–7 V to +12 V) maintains signal integrity despite ground bounce across multiple chassis-mounted drives. |
Use Scenario: HVAC controller networking across multi-floor commercial buildings using unshielded twisted-pair cabling routed near AC mains. IC Role / Device Role / Timing Role: Low-power RS-485 node transceiver enabling always-on environmental monitoring with <2 µA standby draw. Use Value: Ultra-low quiescent current extends battery life in wireless gateway bridges while maintaining wired fallback reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RS-485 transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65HVD72D | SOIC-8 package (4.91 mm × 3.90 mm); identical electrical specs and pinout | Requires larger PCB area; better suited for prototyping or manual assembly | Select SN65HVD72D when board space allows and hand-soldering is preferred over VSON reflow |
| MAX13487EESA+ | 5-V supply only; ±15 kV HBM ESD; 500 kbps max rate; different enable logic (RE active-high) | Not drop-in compatible due to supply voltage and enable polarity mismatch | Choose MAX13487EESA+ only when upgrading to higher speed and 5-V systems with redesign allowance |
Compared with SN65HVD72DRBT, SN65HVD72D offers identical functionality in SOIC for easier layout and rework, while MAX13487EESA+ provides higher speed and stronger HBM protection but demands full schematic and firmware revision due to voltage and control logic differences.
Availability
SN65HVD72DRBT is available at Aetrix Electronics and suitable for factory automation, motion control, and building management systems requiring stable component supply, long-term industrial lifecycle support, and guaranteed traceable sourcing.
Supply support for SN65HVD72DRBT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The SN65HVD72DRBT belongs to TI's SN65HVD7x family of robust 3.3-V RS-485 transceivers designed specifically for demanding industrial environments where ESD resilience, wide temperature operation, and bus fault tolerance are critical.
FAQ
What is the maximum signaling rate supported by the SN65HVD72DRBT?
The SN65HVD72DRBT supports a maximum signaling rate of 250 kbps, optimized for noise-immune industrial communication. This rate ensures reliable operation with bit times ≥4 µs, making it ideal for legacy fieldbus protocols and applications where electromagnetic interference is prevalent. The SN65HVD72DRBT does not support higher rates like the SN65HVD75 (20 Mbps) or SN65HVD78 (50 Mbps) variants.
Does the SN65HVD72DRBT require external ESD protection on the bus lines?
No, the SN65HVD72DRBT includes integrated ±12 kV IEC 61000-4-2 contact discharge ESD protection on A, B, and GND pins, eliminating the need for external TVS diodes in most industrial deployments. This built-in protection is validated per IEC standards and reduces BOM count and PCB area. The SN65HVD72DRBT also provides ±15 kV HBM and ±4 kV IEC 61000-4-4 burst protection.
What is the operating temperature range for the SN65HVD72DRBT?
The SN65HVD72DRBT is fully specified for operation from –40°C to +125°C ambient temperature, meeting extended industrial requirements. This range enables deployment in harsh environments such as motor control enclosures, outdoor telecom cabinets, and factory floor PLCs. The device incorporates thermal shutdown that disables the driver at 170°C junction temperature to prevent damage.
How does the SN65HVD72DRBT manage power consumption in standby mode?
The SN65HVD72DRBT draws less than 2 µA of supply current in standby mode when both driver and receiver are disabled (DE = low, RE = high). This ultra-low quiescent current is achieved through internal bias control and is critical for battery-powered or energy-harvesting nodes. In active operation, ICC remains below 1 mA, ensuring minimal thermal impact in dense layouts.
Is the SN65HVD72DRBT pin-compatible with other packages in the SN65HVD7x family?
Yes, the SN65HVD72DRBT shares identical pinout and function mapping with the SOIC-8 (SN65HVD72D) and VSSOP-8 (SN65HVD72DGK) variants - all use the same A/B/D/DE/RE/R/VCC/GND assignment. However, mechanical dimensions and thermal characteristics differ: the DRB (VSON) package offers superior thermal performance (RθJB = 15.5°C/W) and smaller footprint than SOIC or VSSOP.
SN65HVD72DRBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Transceiver
- Protocol:
- RS422, RS485
- Number of Drivers/Receivers:
- 1/1
- Duplex:
- Half
- Receiver Hysteresis:
- 80 mV
- Data Rate:
- 250kbps
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SON (3x3)
SN65HVD72DRBT FAQ
1.How can I place an order for SN65HVD72DRBT through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65HVD72DRBT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SN65HVD72DRBT reliable?
The price and inventory of SN65HVD72DRBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65HVD72DRBT is usually 5 days.
3.What payment methods are accepted for SN65HVD72DRBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65HVD72DRBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65HVD72DRBT?
SN65HVD72DRBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65HVD72DRBT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SN65HVD72DRBT?
For technical support, including SN65HVD72DRBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65HVD72DRBT requirements.
6.How does Aetrix verify that SN65HVD72DRBT is sourced from the original manufacturer or authorized distributors?
All SN65HVD72DRBT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN65HVD72DRBT meets industry standards.
7.What is the process for return or replacement of SN65HVD72DRBT?
All SN65HVD72DRBT units undergo pre-shipment inspection (PSI). If there is an issue with SN65HVD72DRBT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SN65HVD72DRBT part is unused and in its original packaging.
Return procedure for SN65HVD72DRBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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