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Texas Instruments SN65HVD72DGKR
- Part No.:
- SN65HVD72DGKR
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
SN65HVD72DGKR.pdf
- Description:
- IC TRANSCEIVER HALF 1/1 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,875
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Product details
Overview
SN65HVD72DGKR from Texas Instruments is a half-duplex RS-485 transceiver with 3.3-V supply, 250-kbps signaling rate, ±12-kV IEC 61000-4-2 contact ESD protection, 80-mV receiver hysteresis, and <2-µA standby current. It operates across –40°C to 125°C and supports up to 213 nodes on a single bus, targeting industrial automation and motion control systems.
For engineers reviewing the SN65HVD72DGKR datasheet, SN65HVD72DGKR pinout, SN65HVD72DGKR application, or SN65HVD72DGKR equivalent, key selection criteria include its VSSOP-8 package, DE/RE enable control logic, RS-485 bus I/O robustness, low quiescent current in enabled and disabled states, and compatibility with 3.3-V or 5-V logic controllers.
Technical Context
The SN65HVD72DGKR integrates a single 3.3-V differential driver and receiver in half-duplex configuration, with internally connected A/B bus terminals. Its receiver features 80-mV hysteresis for noise immunity on long cable runs, and the driver delivers ≥1.5-V differential output into 54-Ω RS-485 loads.
Control logic uses active-high DE (driver enable) and active-low RE (receiver enable), supporting four functional modes: transmit enabled/receive disabled, transmit disabled/receive enabled, both disabled (high-impedance bus), and both enabled (not recommended). Glitch-free power-up/power-down behavior prevents bus contention during supply transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Signaling Rate | Up to 250 kbps - supports legacy industrial fieldbus speeds with timing margin for cable-induced jitter |
| Supply Voltage | 3.0 V to 3.6 V - compatible with standard 3.3-V rail; 5-V tolerant logic inputs allow direct interface to 5-V microcontrollers |
| Bus ESD Protection | ±12 kV IEC 61000-4-2 contact discharge - eliminates need for external TVS diodes in most factory automation environments |
| Receiver Hysteresis | 80 mV - rejects common-mode noise up to 80 mV without false triggering on multi-drop buses |
| Quiescent Supply Current | <2 µA in standby - enables ultra-low-power wake-on-bus designs for battery-backed or energy-harvesting nodes |
| Node Count Support | 213 unit loads - allows large-scale distributed I/O networks without repeaters or bus segmentation |
| Operating Temperature | –40°C to 125°C - qualified for under-hood, motor drive, and high-ambient industrial enclosures |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65-mm lead pitch, exposed thermal pad (not electrically connected), RoHS-compliant, moisture sensitivity level 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| R | Digital output | Receiver data output - logic-high when A > B by ≥VIT+, logic-low when A < B by ≥|VIT–| |
| RE | Digital input | Active-low receiver enable - drives R high-impedance when RE = high; must be pulled low for receive operation |
| DE | Digital input | Active-high driver enable - enables differential A/B outputs when DE = high; disables driver (high-Z) when DE = low |
| D | Digital input | Driver data input - non-inverted input to driver stage; controls polarity of A/B differential pair |
| GND | Reference potential | Local ground reference for all internal circuitry and I/O; requires low-inductance connection to system ground plane |
| A | Bus I/O | Differential bus terminal - complementary to B; driven high or low depending on D and DE state; receives differential signal when RE active |
| B | Bus I/O | Differential bus terminal - complementary to A; same electrical role as A but inverted polarity |
| VCC | Supply | 3.3-V power input - must be decoupled with ≥100-nF ceramic capacitor placed within 3 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Glitch-free power-up/down | Prevents bus contention during brown-out or hot-plug events by holding A/B in high-impedance until VCC stabilizes |
| 5-V tolerant logic inputs | Allows direct connection to 5-V microcontroller GPIOs without level-shifting, reducing BOM count and layout complexity |
| Low standby current (<2 µA) | Enables always-on RS-485 monitoring in power-constrained edge nodes while maintaining fast wake response |
| Large common-mode range (–7 V to 12 V) | Supports reliable communication over 1200-m cable runs with ground potential differences up to 19 V between nodes |
| IEC 61000-4-4 transient immunity | Withstands ±4-kV fast transient bursts on bus lines - meets EN 61000-4-4 Level 3 for industrial equipment |
Applications
| Factory Automation | Telecommunications Infrastructure |
|---|---|
Use Scenario: Distributed I/O modules communicating with PLCs over 300-m RS-485 daisy chains in manufacturing cells. IC Role / Device Role / Timing Role: Half-duplex transceiver managing bidirectional command/response traffic at 115.2 kbps with deterministic latency. Use Value: 80-mV receiver hysteresis suppresses noise from variable-frequency drives and solenoid switching, preventing spurious frame errors. | Use Scenario: Backhaul node management interfaces connecting remote radio units to baseband units in outdoor cabinets. IC Role / Device Role / Timing Role: Robust physical-layer interface handling configuration, alarms, and firmware updates over noisy outdoor cabling. Use Value: ±12-kV IEC contact ESD protection eliminates field failures caused by technician handling or lightning-induced surges. |
| Motion Control | Building Management Systems |
Use Scenario: Synchronized servo amplifier networks in CNC machines where timing jitter must remain below 1 µs per node. IC Role / Device Role / Timing Role: Low-skew transceiver ensuring sub-microsecond propagation delay matching (tSK(P) ≤ 0.2 µs) across multi-axis feedback loops. Use Value: Driver pulse skew ≤ 0.2 µs and receiver propagation delay ≤ 100 ns maintain tight inter-axis synchronization without software compensation. | Use Scenario: HVAC controller clusters in commercial buildings using RS-485 Modbus RTU to coordinate chillers, AHUs, and VAV boxes. IC Role / Device Role / Timing Role: High-node-count transceiver enabling 213 devices on a single trunk line without repeaters or segment isolation. Use Value: Unit-load rating allows full building-wide deployment on one bus, reducing wiring labor and panel space vs. multiple isolated segments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RS-485 transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65HVD75DR | 20-Mbps signaling rate, higher ICC (750–950 µA quiescent), identical pinout and voltage specs | Suitable for high-speed backplane or short-cable point-to-point links, not optimized for legacy 250-kbps fieldbus timing margins | Select SN65HVD75DR only if system requires >250-kbps throughput; SN65HVD72DGKR remains optimal for deterministic low-speed industrial protocols. |
| MAX13487EESA+ | Integrated slew-rate limiting, 1/8 unit load, ±15-kV HBM ESD, SOIC-8 package only | Better suited for mixed-noise environments with sensitive analog circuits nearby due to lower EMI emissions | Choose MAX13487EESA+ when EMC compliance is critical and board space permits SOIC; SN65HVD72DGKR offers superior thermal performance in VSSOP for dense layouts. |
Compared with SN65HVD75DR and MAX13487EESA+, the SN65HVD72DGKR provides the best balance of low-power operation, noise immunity, and legacy protocol timing compliance - making it the preferred choice for cost-sensitive, thermally constrained, and ESD-prone industrial deployments.
Availability
SN65HVD72DGKR is available at Aetrix Electronics and suitable for factory automation, motion control, and building management systems requiring stable component supply across extended product lifecycles.
Supply support for SN65HVD72DGKR 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The SN65HVD7x family was designed specifically for ruggedized RS-485 communication in harsh industrial environments, emphasizing ESD resilience, wide temperature operation, and multi-node scalability.
FAQ
What is the maximum signaling rate supported by the SN65HVD72DGKR?
The SN65HVD72DGKR supports a maximum signaling rate of 250 kbps, with guaranteed timing parameters including driver propagation delay ≤1.0 µs and receiver propagation delay ≤100 ns under recommended operating conditions. This rate is optimized for legacy industrial protocols such as Modbus RTU and PROFIBUS DP at standard baud rates, ensuring reliable operation over 1200-m cable lengths with appropriate termination.
Does the SN65HVD72DGKR require external ESD protection components?
No, the SN65HVD72DGKR does not require external ESD protection components for IEC 61000-4-2 contact discharge up to ±12 kV on bus pins A and B, nor for ±4 kV IEC 61000-4-4 fast transient bursts. Its integrated protection eliminates discrete TVS diodes in most industrial installations, though system-level surge protection may still be needed for lightning-prone outdoor deployments.
How does the SN65HVD72DGKR manage power consumption in standby mode?
The SN65HVD72DGKR achieves <2 µA standby supply current when both driver and receiver are disabled (DE = GND, RE = VCC), enabling ultra-low-power remote node monitoring. This state maintains bus high-impedance while allowing rapid wake-up via DE/RE control, making it suitable for battery-powered sensor gateways and energy-harvesting field devices where average current must remain below 10 µA.
Can the SN65HVD72DGKR interface directly with a 5-V microcontroller?
Yes, the SN65HVD72DGKR features 5-V tolerant logic inputs (D, DE, RE), allowing direct connection to 5-V GPIOs without level-shifting circuitry. The device operates from a 3.3-V supply (VCC = 3.0–3.6 V), and input voltage limits extend to 5.7 V, ensuring compatibility with mixed-voltage systems while preserving signal integrity and timing margins.
What is the thermal performance of the SN65HVD72DGKR in its VSSOP-8 package?
The SN65HVD72DGKR in DGK (VSSOP-8) package has a junction-to-ambient thermal resistance (RθJA) of 168.7°C/W and a junction-to-board thermal resistance (RθJB) of 89.5°C/W. When mounted on a 2-layer PCB with 1-in² copper pour under the exposed pad, it sustains continuous operation at 125°C ambient with typical load, meeting industrial temperature requirements without forced airflow or heatsinking.
SN65HVD72DGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- 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-VSSOP
SN65HVD72DGKR FAQ
1.How can I place an order for SN65HVD72DGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65HVD72DGKR 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 SN65HVD72DGKR reliable?
The price and inventory of SN65HVD72DGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65HVD72DGKR is usually 5 days.
3.What payment methods are accepted for SN65HVD72DGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65HVD72DGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65HVD72DGKR?
SN65HVD72DGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65HVD72DGKR 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 SN65HVD72DGKR?
For technical support, including SN65HVD72DGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65HVD72DGKR requirements.
6.How does Aetrix verify that SN65HVD72DGKR is sourced from the original manufacturer or authorized distributors?
All SN65HVD72DGKR 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 SN65HVD72DGKR meets industry standards.
7.What is the process for return or replacement of SN65HVD72DGKR?
All SN65HVD72DGKR units undergo pre-shipment inspection (PSI). If there is an issue with SN65HVD72DGKR, 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 SN65HVD72DGKR part is unused and in its original packaging.
Return procedure for SN65HVD72DGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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