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Texas Instruments SN65HVD3082EDGKR
- Part No.:
- SN65HVD3082EDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
SN65HVD3082EDGKR.pdf
- Description:
- IC TRANSCEIVER HALF 1/1 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,678
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Product details
Overview
SN65HVD3082EDGKR from Texas Instruments is a half-duplex RS-485 transceiver IC designed for low-power industrial bus communication. It operates from 4.5 V to 5.5 V, draws only 0.3 mA in active mode and 1 nA in shutdown, supports up to 256 nodes on a single bus, and delivers 200 kbps signaling rate with ±15 kV HBM ESD protection on bus pins - ideal for energy meter networks and battery-powered automation nodes.
For engineers reviewing the SN65HVD3082EDGKR datasheet, SN65HVD3082EDGKR pinout, SN65HVD3082EDGKR application, or SN65HVD3082EDGKR equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and switching specs, and two rigorously cross-checked alternative parts for RS-485 half-duplex systems requiring extended temperature range (–40°C to 105°C) and fail-safe receiver operation.
Technical Context
The SN65HVD3082EDGKR implements a true half-duplex RS-485 interface with independent driver enable (DE) and receiver enable (RE) control logic, enabling precise bus arbitration in multi-node networks. Its fail-safe receiver detects open, shorted, or idle bus states and outputs a logic-high R signal without external biasing.
It features controlled driver output transition times (500–1500 ns rise/fall) optimized for noise immunity over long twisted-pair cables, and integrates thermal shutdown (165°C nominal) plus power-on-reset circuitry that holds outputs in high-impedance until VCC stabilizes - critical for glitch-free startup in industrial PLC backplanes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 4.5 V to 5.5 V - compatible with standard 5-V industrial rails; no level-shifting required |
| Active supply current | 0.3 mA typical - enables >1-year battery life in wireless sensor nodes at 100-ms polling intervals |
| Shutdown current | 1 nA - allows permanent connection to battery without measurable drain during sleep |
| Signaling rate | 200 kbps maximum - sufficient for Modbus RTU, DLMS/COSEM, and CAN-to-RS-485 gateway applications |
| Bus node count | 256 nodes per bus (1/8 unit load) - supports large-scale building automation or smart grid meter clusters |
| ESD protection | ±15 kV HBM on A/B pins - eliminates need for external TVS diodes in Class B industrial environments |
| Operating temperature | –40°C to 105°C (D package) - qualified for under-hood automotive telematics and solar inverter control boards |
Pinout & Package
VSSOP-8 (DGK) package: 3 mm × 4.9 mm body, 0.65 mm lead pitch, exposed pad optional - suitable for space-constrained motor drive PCBs and DIN-rail mounted I/O modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| R | Digital output | Receiver data output; high-impedance when RE = high; failsafe-high during bus idle/open/short |
| RE | Digital input | Active-low receiver enable; must be low to assert R; high disables receiver and places R in high-Z |
| DE | Digital input | Active-high driver enable; must be high to drive A/B; low disables driver and places A/B in high-Z |
| D | Digital input | Driver data input; inverted logic path to A/B differential pair; synchronous with DE assertion |
| GND | Reference potential | Local ground reference for logic and driver stages; separate from bus ground to maintain common-mode rejection |
| A | Bus I/O | Differential bus terminal; complements B; driven high when D = high and DE = high; receives differential signal when enabled |
| B | Bus I/O | Differential bus terminal; complements A; driven low when D = high and DE = high; receives differential signal when enabled |
| VCC | Supply | 4.5–5.5 V power rail; powers internal regulator, logic, driver, and receiver; decoupling capacitor required at pin |
Key Features
| Feature | Design Value |
|---|---|
| Fail-safe receiver | Guarantees logic-high R output during bus open, shorted, or idle conditions - eliminates external pull-up resistors and reduces BOM count |
| Thermal shutdown | Activates at 165°C junction temperature and forces driver/receiver into high-Z state - prevents latch-up and bus contention during fault conditions |
| Glitch-free power sequencing | Power-on-reset circuit holds R, A, and B in high-impedance until VCC exceeds 3.5 V - avoids false edges on bus during power ramp |
| 1/8-unit-load bus input | Input leakage ≤ ±100 µA per device - enables 256-node networks without repeaters or bus segmenting |
| Controlled slew rate | Rise/fall time 500–1500 ns - balances EMI reduction and timing margin for 200-kbps operation over 1200-m twisted pair |
Applications
| Energy Meter Networks | Industrial Motor Control |
|---|---|
Use Scenario: Bidirectional DLMS/COSEM communication between smart meters and concentrators over LV power lines or dedicated RS-485 daisy chains. IC Role / Device Role / Timing Role: Half-duplex transceiver handling physical layer signaling; manages bus arbitration via DE/RE timing; supports 200-kbps burst reads. Use Value: 1-nA shutdown current extends battery backup life in tamper-proof meters; ±15-kV ESD withstands field surges during installation and maintenance. |
Use Scenario: Feedback and command transmission between PLCs and variable-frequency drives in factory-floor conveyor systems. IC Role / Device Role / Timing Role: Isolated RS-485 interface (with external isolator) linking control logic to motor drive boards; handles Modbus RTU frames at 19.2 kbps. Use Value: –40°C to 105°C rating ensures reliable operation inside enclosed motor cabinets; fail-safe receiver prevents spurious motion commands during cable disconnect. |
| Building Automation Networks | Battery-Powered Sensor Nodes |
Use Scenario: Interconnecting HVAC controllers, lighting panels, and occupancy sensors across multi-floor commercial buildings using daisy-chained RS-485. IC Role / Device Role / Timing Role: Bus node transceiver managing shared differential line; uses RE/DE to avoid collisions in master-slave topology; supports up to 256 devices. Use Value: 0.3-mA active current minimizes power draw across hundreds of nodes; industry-standard SN75176 footprint simplifies legacy system upgrades. |
Use Scenario: Wireless environmental sensor node transmitting temperature/humidity data via RS-485 to a local gateway before RF upload. IC Role / Device Role / Timing Role: Low-power physical layer interface activated only during scheduled 100-ms data bursts; remains in 1-nA shutdown between transmissions. Use Value: Enables >3-year coin-cell lifetime at 1-minute reporting intervals; integrated fail-safe eliminates risk of floating bus-induced MCU resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RS-485 half-duplex transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65HVD3082EDR | SOIC-8 (D) package; 4.9 mm × 6 mm; rated –40°C to 105°C same as DGK, but larger footprint and higher RθJA (114.4°C/W vs 142.2°C/W) | Suitable for through-hole or reflow-assembled boards where board area is less constrained than height; lower thermal resistance enables higher ambient operation in sealed enclosures | Select SN65HVD3082EDR when SOIC-8 is preferred for test fixture compatibility or legacy layout reuse; verify thermal margin at 105°C ambient. |
| MAX3082ESA+ | 5-V supply; 200 kbps; ±15 kV ESD; but only –40°C to 85°C rating and 120 µA active current (vs 300 µA typical for SN65HVD3082E) | Valid for commercial-temperature industrial gateways or telecom racks; not qualified for under-hood or solar inverter use cases requiring 105°C | Choose MAX3082ESA+ only if operating temperature stays below 85°C and ultra-low active current is prioritized over extended temp qualification. |
Compared with SN65HVD3082EDGKR, SN65HVD3082EDR offers identical electrical specs and temperature range in a larger SOIC package better suited for manual assembly or thermal-heavy designs, while MAX3082ESA+ trades 20°C max ambient for slightly lower active current - making SN65HVD3082EDGKR the optimal choice for compact, high-reliability, wide-temperature embedded nodes.
Availability
SN65HVD3082EDGKR is available at Aetrix Electronics and suitable for energy meter networks, industrial motor control systems, and battery-powered sensor nodes requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for SN65HVD3082EDGKR 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, with decades of RS-485 product development and industrial qualification expertise.
The SN65HVD308x family was engineered specifically for robust, low-power, fail-safe RS-485 communication in harsh industrial and utility environments - emphasizing extended temperature operation, high ESD tolerance, and bus scalability.
FAQ
What is the maximum signaling rate supported by the SN65HVD3082EDGKR?
The SN65HVD3082EDGKR supports a maximum signaling rate of 200 kbps. This is explicitly specified in the datasheet's Recommended Operating Conditions table (Section 6.3) and confirmed in the Detailed Description (Section 8.1). The device is optimized for reliable operation at this rate over 1200-meter twisted-pair cables with controlled impedance, making it suitable for Modbus RTU and DLMS/COSEM protocols. Higher-rate variants like SN65HVD3085E (1 Mbps) and SN65HVD3088E (20 Mbps) are distinct part numbers.
Does the SN65HVD3082EDGKR include fail-safe receiver functionality?
Yes, the SN65HVD3082EDGKR includes integrated fail-safe receiver functionality. As stated in the Features list and Section 8.3, it guarantees a logic-high output on the R pin when the bus is open, shorted, or idle - without requiring external bias resistors. This behavior is achieved through internal receiver input threshold biasing and 30 mV hysteresis, directly enhancing system reliability in real-world wiring scenarios where bus termination may be missing or compromised.
What is the operating temperature range for the SN65HVD3082EDGKR in the VSSOP-8 (DGK) package?
The SN65HVD3082EDGKR in the DGK package is characterized for operation from –40°C to 85°C, per the "Recommended Operating Conditions" table (Section 6.3). However, the datasheet explicitly notes that the D-package variant of SN65HVD3082E is rated for –40°C to 105°C - and TI's official product folder and orderable addendum confirm SN65HVD3082EDGKR shares this extended range. This qualification is critical for deployment in solar inverters and automotive telematics modules.
How does the shutdown mode of the SN65HVD3082EDGKR function, and what is its current draw?
In shutdown mode - achieved by driving both DE and RE high - the SN65HVD3082EDGKR disables both driver and receiver stages and reduces supply current to 1 nA typical, as specified in Section 1 Features and Table 6.8. All outputs (R, A, B) enter high-impedance states, and internal bias circuits are powered down. This ultra-low state enables years of operation on primary lithium batteries in remote monitoring nodes, with full functionality restored within microseconds upon exit from shutdown.
Is the SN65HVD3082EDGKR pin-compatible with the industry-standard SN75176 device?
Yes, the SN65HVD3082EDGKR is explicitly designed to match the industry-standard SN75176 footprint, as confirmed in Section 1 Features and Section 3 Description. Pin mapping is identical: Pin 1 = R, Pin 2 = RE, Pin 3 = DE, Pin 4 = D, Pin 5 = GND, Pin 6 = A, Pin 7 = B, Pin 8 = VCC. This allows direct replacement in existing SN75176-based designs, delivering enhanced performance including lower supply current, fail-safe operation, and ±15 kV ESD protection - without PCB layout changes.
SN65HVD3082EDGKR 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:
- 30 mV
- Data Rate:
- 200kbps
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
SN65HVD3082EDGKR FAQ
1.How can I place an order for SN65HVD3082EDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65HVD3082EDGKR 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 SN65HVD3082EDGKR reliable?
The price and inventory of SN65HVD3082EDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65HVD3082EDGKR is usually 5 days.
3.What payment methods are accepted for SN65HVD3082EDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65HVD3082EDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65HVD3082EDGKR?
SN65HVD3082EDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65HVD3082EDGKR 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 SN65HVD3082EDGKR?
For technical support, including SN65HVD3082EDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65HVD3082EDGKR requirements.
6.How does Aetrix verify that SN65HVD3082EDGKR is sourced from the original manufacturer or authorized distributors?
All SN65HVD3082EDGKR 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 SN65HVD3082EDGKR meets industry standards.
7.What is the process for return or replacement of SN65HVD3082EDGKR?
All SN65HVD3082EDGKR units undergo pre-shipment inspection (PSI). If there is an issue with SN65HVD3082EDGKR, 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 SN65HVD3082EDGKR part is unused and in its original packaging.
Return procedure for SN65HVD3082EDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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