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Texas Instruments SN65HVD72DR
- Part No.:
- SN65HVD72DR
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN65HVD72DR.pdf
- Description:
- IC TRANSCEIVER HALF 1/1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,823
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Product details
Overview
SN65HVD72DR from Texas Instruments is a half-duplex RS-485 transceiver IC 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, used in industrial motion control systems requiring robust noise immunity and low-power operation.
For engineers reviewing the SN65HVD72DR datasheet, SN65HVD72DR pinout, SN65HVD72DR application, or SN65HVD72DR equivalent, this page delivers verified electrical specs, SOIC-8 and VSSOP-8 package details, functional pin mapping, real-world use cases in factory automation and telecom infrastructure, and two validated alternative transceivers with documented differences in speed and node count.
Technical Context
The SN65HVD72DR integrates a single 3.3-V differential driver and receiver in half-duplex configuration, with internal bus termination not included. Its driver delivers ≥1.5-V differential output into 54-Ω RS-485 loads, while the receiver features a wide –7-V to 12-V common-mode input range and 80-mV hysteresis for reliable operation under noisy industrial conditions.
Control logic includes active-high DE (driver enable) and active-low RE (receiver enable), supporting independent driver/receiver disable states. Glitch-free power-up/power-down behavior prevents bus contention during supply transitions, and 5-V-tolerant logic inputs allow direct interfacing with 3.3-V or 5-V microcontrollers without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Signaling Rate | Up to 250 kbps - supports legacy industrial networks with timing margin for long cable runs and high-noise environments. |
| Supply Voltage | 3.0 V to 3.6 V - optimized for modern 3.3-V system rails; 5-V tolerant logic pins simplify host MCU integration. |
| ESD Protection | ±12 kV IEC 61000-4-2 contact discharge - enables deployment in unshielded factory-floor wiring without external TVS diodes. |
| Receiver Hysteresis | 80 mV - rejects common-mode noise and ground bounce on multi-drop buses up to 1200 m. |
| Unit Load | 1/8 unit load - allows >200 nodes on a single RS-485 segment, reducing repeater requirements in large-scale automation systems. |
| Quiescent Current | <2 µA standby, <1 mA active - extends battery life in remote sensor nodes and enables always-on monitoring in energy-constrained designs. |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive subsystems and high-temperature industrial enclosures. |
Pinout & Package
SN65HVD72DR is available in SOIC-8 (4.91 mm × 3.90 mm) and VSSOP-8 (3.00 mm × 3.00 mm) packages. Both variants share identical pin numbering and function mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 8) | Power supply input | 3.3-V nominal supply rail; must be decoupled with ≥100-nF ceramic capacitor near pin for stable switching performance. |
| GND (Pin 5) | Reference potential | Local ground return for driver/receiver circuitry; requires low-inductance connection to system ground plane. |
| D (Pin 4) | Driver data input | TTL/CMOS-compatible digital input controlling driver output polarity; 5-V tolerant, no level shifter needed. |
| DE (Pin 3) | Driver enable | Active-high control signal; when high, driver outputs A/B; when low, A/B enter high-impedance state. |
| RE (Pin 2) | Receiver enable | Active-low control signal; when low, receiver output R is active; when high, R enters high-impedance state. |
| R (Pin 1) | Receiver data output | CMOS-level output reflecting differential bus state (A–B); sinks/sourcing ≤8 mA, compatible with 3.3-V logic inputs. |
| A (Pin 6) | Bus I/O (non-inverting) | Differential bus terminal; outputs high when D = 1 and DE = 1; receives signal as non-inverting input to receiver. |
| B (Pin 7) | Bus I/O (inverting) | Differential bus terminal; outputs low when D = 1 and DE = 1; receives signal as inverting input to receiver. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 Contact ESD | ±12 kV protection on A/B/GND pins eliminates need for external TVS diodes in most industrial installations. |
| Glitch-free Power Sequencing | Prevents false bus states during power-up/down by holding A/B and R in high-Z until VCC stabilizes above 2.5 V. |
| Low Unit Load (1/8) | Enables >200 transceivers on one RS-485 segment without signal degradation, reducing infrastructure cost per node. |
| Wide Common-Mode Range | –7 V to +12 V input tolerance accommodates ground potential differences across long cable runs (>1 km). |
| Thermal Shutdown | Automatic driver disable at 170°C junction temperature protects against sustained short-circuit faults on A/B lines. |
Applications
| Factory Automation | Telecommunications Infrastructure |
|---|---|
Use Scenario: PLC-to-I/O module communication over 300-m twisted-pair cabling in metal-enclosed machinery cabinets with variable-frequency drives. IC Role / Device Role / Timing Role: Half-duplex RS-485 transceiver providing electrically isolated, noise-immune data exchange between controller and distributed sensors/actuators. Use Value: 80-mV receiver hysteresis and ±12-kV ESD withstand prevent spurious resets during motor startup transients and electrostatic discharge events. |
Use Scenario: Backhaul link between base station remote radio units (RRUs) and centralized baseband units (BBUs) in outdoor macro-cell sites. IC Role / Device Role / Timing Role: Robust physical-layer interface converting UART signals to differential RS-485 for reliable long-distance transmission in temperature-varying outdoor enclosures. Use Value: –40°C to 125°C operation and 250-kbps rate ensure deterministic latency and error-free framing under thermal cycling and lightning-induced surges. |
| Motion Control Systems | Industrial IoT Gateways |
Use Scenario: Synchronized multi-axis servo drive network in CNC machine tools where encoder feedback and command signals coexist on shared cabling. IC Role / Device Role / Timing Role: Differential bus transceiver enabling deterministic command distribution and status reporting across up to 213 axes with minimal skew. Use Value: Low propagation delay (≤1 µs) and pulse skew (≤0.2 µs) preserve timing integrity across daisy-chained drives operating at 250 kbps. |
Use Scenario: Edge gateway aggregating Modbus RTU data from 50+ legacy sensors in oil & gas pipeline monitoring stations powered by solar/battery hybrid systems. IC Role / Device Role / Timing Role: Low-power RS-485 interface enabling always-on polling while maintaining sub-2-µA sleep current to extend battery life beyond 5 years. Use Value: <2-µA standby current and 1/8 unit load reduce total system power budget and eliminate need for bus repeaters in star-topology deployments. |
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, same 3.3-V supply and pinout, but higher ICC (750–950 µA active) and reduced node count (96 vs. 213). | Suitable for high-speed point-to-point links (e.g., servo tuning interfaces), not recommended for large multi-drop networks due to increased unit load. | Select SN65HVD75DR only when >250-kbps throughput is required and bus node count remains ≤96. |
| MAX13487EESA+ | Pin-compatible SOIC-8, 250-kbps rate, integrated slew-rate limiting, but lower ESD rating (±15-kV HBM only, no IEC 61000-4-2 spec). | Acceptable for indoor, low-noise environments; unsuitable for factory floors or outdoor telecom cabinets requiring IEC-level surge immunity. | Choose MAX13487EESA+ only if board space is constrained and IEC 61000-4-2 compliance is not mandated by system safety certification. |
Compared with SN65HVD72DR, SN65HVD75DR trades node scalability and ultra-low standby current for higher speed, while MAX13487EESA+ sacrifices certified ESD robustness for integrated slew control-making SN65HVD72DR the optimal choice for high-node-count, harsh-environment industrial RS-485 networks.
Availability
SN65HVD72DR is available at Aetrix Electronics and suitable for factory automation, motion control, and telecommunications infrastructure requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for SN65HVD72DR 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 technologies, with decades of expertise in industrial-grade interface solutions.
The SN65HVD7x family was designed specifically for rugged RS-485 communication in extended-temperature industrial systems, emphasizing ESD resilience, low power, and multi-node scalability without sacrificing timing precision.
FAQ
What is the maximum signaling rate supported by the SN65HVD72DR?
The SN65HVD72DR supports a maximum signaling rate of 250 kbps, as confirmed in the device comparison table and switching characteristics section of the official datasheet. This rate is optimized for noise immunity and long-cable reliability in industrial environments, with bit time ≥4 µs. Higher rates (e.g., 20 Mbps) require SN65HVD75DR or SN65HVD78DR variants, which are not pin-compatible replacements for SN65HVD72DR.
Does the SN65HVD72DR include built-in ESD protection on the bus pins?
Yes, the SN65HVD72DR provides certified ±12 kV IEC 61000-4-2 contact discharge protection on bus pins A, B, and GND, plus ±15 kV HBM and ±4 kV IEC 61000-4-4 fast transient burst protection. These ratings are measured per JEDEC and IEC standards and eliminate the need for external TVS diodes in most industrial deployments, as stated in the Features and ESD Ratings sections of the datasheet.
Can the SN65HVD72DR operate with a 5-V logic controller?
Yes, the SN65HVD72DR features 5-V tolerant logic inputs (D, DE, RE), allowing direct connection to 5-V microcontrollers or FPGAs without level-shifting circuitry. The device itself operates from a 3.0–3.6-V VCC supply, and the 5-V tolerance is explicitly specified in the Recommended Operating Conditions table under "Voltage at D, DE, or RE" (–0.3 V to 5.7 V).
How many nodes can be connected to a single SN65HVD72DR bus segment?
The SN65HVD72DR presents only 1/8 unit load to the RS-485 bus, enabling up to 213 transceivers on a single segment as documented in the Device Comparison Table. This high node count is achieved through low input capacitance and bias current design, making it ideal for large-scale distributed I/O systems without requiring repeaters or segment isolation.
What is the operating temperature range for the SN65HVD72DR?
The SN65HVD72DR is fully characterized for operation from –40°C to +125°C ambient temperature, as specified in both the Applications and Recommended Operating Conditions sections. This extended industrial temperature range qualifies it for under-hood automotive modules, outdoor telecom equipment, and high-temperature manufacturing environments where standard commercial-grade transceivers would fail.
SN65HVD72DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
SN65HVD72DR FAQ
1.How can I place an order for SN65HVD72DR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65HVD72DR 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 SN65HVD72DR reliable?
The price and inventory of SN65HVD72DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65HVD72DR is usually 5 days.
3.What payment methods are accepted for SN65HVD72DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65HVD72DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65HVD72DR?
SN65HVD72DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65HVD72DR 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 SN65HVD72DR?
For technical support, including SN65HVD72DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65HVD72DR requirements.
6.How does Aetrix verify that SN65HVD72DR is sourced from the original manufacturer or authorized distributors?
All SN65HVD72DR 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 SN65HVD72DR meets industry standards.
7.What is the process for return or replacement of SN65HVD72DR?
All SN65HVD72DR units undergo pre-shipment inspection (PSI). If there is an issue with SN65HVD72DR, 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 SN65HVD72DR part is unused and in its original packaging.
Return procedure for SN65HVD72DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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