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Texas Instruments SN65HVD1050DR
- Part No.:
- SN65HVD1050DR
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN65HVD1050DR.pdf
- Description:
- IC TRANSCEIVER HALF 1/1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,585
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Product details
Overview
SN65HVD1050DR from Texas Instruments is an EMC-optimized, high-speed CAN bus transceiver compliant with ISO 11898-2, supporting up to 1 Mbps signaling rate, featuring dominant time-out protection, bus-fault tolerance from –27 V to 40 V, and thermal shutdown at 190°C. It interfaces microcontroller CAN controllers to differential CANH/CANL bus lines in industrial automation and automotive SAE J1939 systems.
For engineers reviewing the SN65HVD1050DR datasheet, SN65HVD1050DR pinout, SN65HVD1050DR application, or SN65HVD1050DR equivalent, key selection considerations include its silent mode (S-pin controlled listen-only operation), VREF output for split-termination stabilization, ±12-V common-mode range, and robust ESD immunity (±8 kV HBM on all pins).
Technical Context
The SN65HVD1050DR implements a fully differential driver/receiver architecture with integrated dominant time-out circuitry triggered by TXD falling edge and reset on next rising edge, preventing bus lockup during controller faults. Its receiver features 125 mV hysteresis (VIT+ = 900 mV, VIT– = 650 mV) and supports bidirectional communication across –12 V to +12 V common-mode voltage.
Operation includes two functional modes: high-speed mode (S pin grounded) enabling full transmit/receive capability, and silent mode (S pin high) disabling the driver while preserving receiver functionality for network monitoring without bus contention. The VREF pin delivers a stable VCC/2 reference (0.4VCC to 0.6VCC) for biasing split-termination networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Signaling Rate | Up to 1 Mbps - enables high-speed CAN communication in automotive and industrial networks requiring fast data exchange. |
| Bus Fault Protection | –27 V to 40 V - withstands severe bus transients including load dump and reverse battery conditions without damage. |
| Dominant Time-Out | 280–700 µs - automatically disables driver if TXD remains low beyond timeout, freeing bus for other nodes during controller failure. |
| Common-Mode Range | –12 V to +12 V - ensures reliable operation in electrically noisy environments with ground offsets. |
| VREF Output | VCC/2 ±10% - provides precise mid-supply reference for stabilizing common-mode voltage in split-termination CAN topologies. |
| ESD Immunity | ±8 kV HBM (all pins) - meets stringent IEC 61000-4-2 requirements for industrial and automotive deployment. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and harsh industrial ambient conditions. |
Pinout & Package
SN65HVD1050DR is housed in an 8-pin SOIC package (4.90 mm × 3.91 mm body size), optimized for surface-mount assembly and board-level EMI control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TXD (Pin 1) | Transmit Data Input | CMOS-level digital input controlling driver state: LOW = dominant bus output, HIGH = recessive bus output. |
| GND (Pin 2) | Ground Reference | Primary return path for internal circuitry and supply current; must be low-impedance connection to system ground plane. |
| VCC (Pin 3) | Power Supply | 5-V nominal supply (4.5–5.5 V range); powers both driver and receiver sections; requires local 100-nF bypass capacitor. |
| RXD (Pin 4) | Receive Data Output | CMOS-level digital output reflecting bus state: LOW = dominant, HIGH = recessive; compatible with standard logic inputs. |
| VREF (Pin 5) | Voltage Reference Output | Provides VCC/2 (2.25–2.75 V at 5 V supply) for biasing split-termination resistors and stabilizing common-mode voltage. |
| CANL (Pin 6) | Low-Side Bus Line | Differential bus terminal; connects directly to CAN_L wire; rated for –27 V to 40 V fault voltage. |
| CANH (Pin 7) | High-Side Bus Line | Differential bus terminal; connects directly to CAN_H wire; rated for –27 V to 40 V fault voltage. |
| S (Pin 8) | Mode Select Input | Logic-controlled functional mode: LOW = high-speed (full TX/RX), HIGH = silent mode (RX only, driver disabled). |
Key Features
| Feature | Design Value |
|---|---|
| EMC-Optimized Layout | Integrated design reduces radiated emissions and improves immunity per ISO 11898-2, eliminating need for external filtering in many applications. |
| Glitch-Free Power Sequencing | Monotonic RXD/CANH/CANL transitions during power-up/down prevent false bus states and protocol errors during system initialization. |
| Babbling Idiot Protection | Silent mode (S = HIGH) and dominant time-out jointly prevent faulty nodes from disrupting network communication indefinitely. |
| Split-Termination Support | VREF output enables precise VCC/2 biasing of 120-Ω split termination (60 Ω + 60 Ω), improving signal integrity and reducing common-mode noise. |
| Thermal Shutdown | Automatic driver disable at ~190°C junction temperature protects against catastrophic failure during sustained bus shorts. |
Applications
| Industrial Automation | Automotive Powertrain |
|---|---|
|
Use Scenario: DeviceNet™ fieldbus nodes in factory PLC systems with long cable runs and high EMI. IC Role / Device Role / Timing Role: Physical layer interface between ARM-based controller and twisted-pair CAN bus, handling 500-kbps messaging with ±12-V common-mode rejection. Use Value: Bus-fault tolerance and ±8-kV HBM ESD rating ensure uptime in electrically noisy plant-floor environments. |
Use Scenario: Engine control unit (ECU) communication over SAE J1939 backbone in diesel trucks. IC Role / Device Role / Timing Role: High-speed CAN transceiver linking microcontroller to CANH/CANL bus, supporting 250-kbps diagnostic and sensor data transfer. Use Value: Dominant time-out prevents single-node failure from blocking entire powertrain network during software crashes. |
| Off-Highway Machinery | Marine NMEA 2000 Networks |
|
Use Scenario: Hydraulic control modules on agricultural tractors exposed to vibration, moisture, and wide temperature swings. IC Role / Device Role / Timing Role: Robust physical layer device operating from –40°C to +125°C, interfacing MCU to ISO 11783-compliant CAN bus. Use Value: –27 V to 40 V bus fault protection withstands alternator load-dump transients and battery-reversal events. |
Use Scenario: Chartplotter and autopilot integration via NMEA 2000 marine data bus aboard aluminum-hull vessels. IC Role / Device Role / Timing Role: CAN transceiver providing galvanically isolated bus interface with VREF-stabilized split termination for noise-free GPS and heading data. Use Value: Low electromagnetic emissions (EME) meet CISPR 22 Class B limits, avoiding interference with RF-sensitive navigation equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CAN transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TJA1050T/3 | Lacks dominant time-out and thermal shutdown; lower ESD rating (±4 kV HBM); no VREF output. | Suitable for cost-sensitive legacy designs where babbling idiot protection is handled externally. | Choose TJA1050T/3 only if existing layout and firmware already implement external time-out logic and thermal monitoring. |
| MCP2551-I/P | Higher quiescent current (12 mA vs 10 mA typical); no silent mode; ±2-kV ESD rating; operates up to 125°C but not characterized for 125°C continuous operation. | Used in older automotive infotainment systems; lacks modern EMC optimization and fault diagnostics. | Select MCP2551-I/P only when backward compatibility with legacy schematics and footprint is mandatory. |
Compared with TJA1050T/3 and MCP2551-I/P, SN65HVD1050DR delivers superior system-level reliability through integrated dominant time-out, thermal shutdown, and VREF-assisted termination-reducing firmware complexity and PCB area while meeting stringent automotive EMC requirements without external components.
Availability
SN65HVD1050DR is available at Aetrix Electronics and suitable for industrial automation, automotive powertrain, and marine electronics applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for SN65HVD1050DR 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 and embedded processing technologies, with decades of experience in automotive, industrial, and communications IC design.
The SN65HVD1050DR belongs to TI's high-reliability CAN transceiver product line, engineered specifically for demanding applications requiring ISO 11898-2 compliance, extended temperature operation, and built-in fault protection mechanisms.
FAQ
What is the maximum signaling rate supported by the SN65HVD1050DR?
The SN65HVD1050DR supports a maximum signaling rate of 1 Mbps, verified across the full operating temperature range (–40°C to +125°C) and supply voltage range (4.5 V to 5.5 V). This rate is maintained with 60-Ω bus termination and meets ISO 11898-2 timing requirements for high-speed CAN networks used in automotive and industrial systems. The SN65HVD1050DR achieves this performance while maintaining <195 ns total loop delay (dominant-to-recessive) under worst-case conditions.
How does the dominant time-out function protect the CAN network in the SN65HVD1050DR?
The dominant time-out (DTO) circuit in the SN65HVD1050DR monitors the TXD input and disables the driver if a falling edge is followed by no rising edge within 280–700 µs. This prevents a stuck-at-low TXD condition from forcing the bus into permanent dominant state, which would block all other nodes. When triggered, the SN65HVD1050DR releases the bus to recessive while maintaining RXD output and receiver functionality-ensuring continued network visibility during fault recovery.
Can the SN65HVD1050DR operate in silent mode, and how is it enabled?
Yes, the SN65HVD1050DR supports silent (listen-only) mode, activated by applying a logic HIGH to the S pin (Pin 8). In this mode, the driver is fully disabled-CANH and CANL enter high-impedance state-while the receiver remains active and continues to output valid RXD signals reflecting bus activity. This allows safe network monitoring without risk of bus contention, making the SN65HVD1050DR ideal for redundant node architectures and diagnostic tools.
What is the purpose of the VREF pin on the SN65HVD1050DR, and how should it be used?
The VREF pin on the SN65HVD1050DR outputs a precision VCC/2 voltage (0.4VCC to 0.6VCC) intended to bias the center tap of a split 120-Ω termination network (two 60-Ω resistors). This stabilizes the common-mode voltage on the CAN bus, improving noise immunity and signal integrity-especially critical in long-cable or high-EMI installations. If unused, the VREF pin may be left floating; it is not required for basic CAN operation but strongly recommended for optimal EMC performance.
Does the SN65HVD1050DR provide bus-fault protection, and what voltage range is covered?
Yes, the SN65HVD1050DR provides comprehensive bus-fault protection on CANH and CANL terminals from –27 V to +40 V, exceeding ISO 11898-2 requirements. This includes protection against reverse battery, load dump, and inductive switching transients. The device also withstands ±200 V transient pulses per ISO 7637 test pulses 1, 2, 3a, 3b, 5, 6, and 7-making the SN65HVD1050DR suitable for automotive and off-road vehicle applications where electrical stress is severe and unpredictable.
SN65HVD1050DR 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:
- CANbus
- Number of Drivers/Receivers:
- 1/1
- Duplex:
- Half
- Receiver Hysteresis:
- 125 mV
- Data Rate:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SN65HVD1050DR FAQ
1.How can I place an order for SN65HVD1050DR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65HVD1050DR 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 SN65HVD1050DR reliable?
The price and inventory of SN65HVD1050DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65HVD1050DR is usually 5 days.
3.What payment methods are accepted for SN65HVD1050DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65HVD1050DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65HVD1050DR?
SN65HVD1050DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65HVD1050DR 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 SN65HVD1050DR?
For technical support, including SN65HVD1050DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65HVD1050DR requirements.
6.How does Aetrix verify that SN65HVD1050DR is sourced from the original manufacturer or authorized distributors?
All SN65HVD1050DR 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 SN65HVD1050DR meets industry standards.
7.What is the process for return or replacement of SN65HVD1050DR?
All SN65HVD1050DR units undergo pre-shipment inspection (PSI). If there is an issue with SN65HVD1050DR, 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 SN65HVD1050DR part is unused and in its original packaging.
Return procedure for SN65HVD1050DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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