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Texas Instruments SN65HVD235DR
- Part No.:
- SN65HVD235DR
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN65HVD235DR.pdf
- Description:
- IC TRANSCEIVER HALF 1/1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,675
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Product details
Overview
SN65HVD235DR from Texas Instruments is a 3.3-V CAN bus transceiver implementing autobaud loopback mode for baud rate synchronization, supporting data rates up to 1 Mbps, featuring ±36-V bus fault protection, ±16-kV HBM ESD rating on bus pins, and –7 V to 12 V common-mode range - deployed in industrial automation and SAE J1939 vehicle networks.
For engineers reviewing the SN65HVD235DR datasheet, SN65HVD235DR pinout, SN65HVD235DR application, or SN65HVD235DR equivalent, key selection criteria include autobaud loopback capability, RS-pin-adjustable slew rate, thermal shutdown protection, 200-μA standby current, and SOIC-8 package compatibility with ISO 11898-2 physical layer compliance.
Technical Context
The SN65HVD235DR integrates a differential CAN driver and receiver with an internal D-to-R loopback path activated during autobaud mode (AB pin high), enabling local controller baud detection without bus disturbance. Its RS pin configures high-speed, slope-controlled, or standby operation via resistor-based slew-rate tuning (2.0–15 V/μs).
It features monolithic output behavior during power cycling, glitch-free I/O transitions at power-up/down, and high-input impedance (>40 kΩ differential) supporting up to 120 nodes. Bus pins withstand ±100-V transient common-mode surges and maintain functionality with VCC as low as 3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0–3.6 V - operates reliably across industrial voltage tolerance; no external regulator needed for 3.3-V systems. |
| Data Rate | Up to 1 Mbps - supports full-speed CAN FD preambles and legacy CAN 2.0B timing requirements. |
| Common-Mode Range | –7 V to +12 V - enables robust operation in electrically noisy environments like motor drives and HVAC backplanes. |
| Bus Fault Protection | ±36 V - prevents latch-up or damage during wiring faults, ground shifts, or load-dump events. |
| ESD Rating (HBM) | ±16 kV on CANH/CANL - exceeds IEC 61000-4-2 Level 4, reducing need for external TVS diodes. |
| Standby Current | 200 μA typical - maintains bus listen capability while minimizing system power in idle states. |
| Differential Input Resistance | 40–100 kΩ - ensures stable termination matching and predictable node loading across temperature. |
Pinout & Package
SN65HVD235DR is housed in an SOIC-8 (D) package measuring 4.90 mm × 3.91 mm, with standard gull-wing leads, RoHS-compliant finish, and moisture sensitivity level (MSL) 2a per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D (Pin 1) | Transmit Data Input | LVTTL-compatible input driving CAN driver stage; 5-V tolerant, accepts microcontroller TXD signals directly. |
| GND (Pin 2) | Ground Reference | Primary return path for supply and signal currents; must be low-impedance connection to minimize common-mode noise coupling. |
| VCC (Pin 3) | Power Supply | 3.3-V supply input; requires local 100-nF ceramic decoupling placed within 5 mm of pin. |
| R (Pin 4) | Receive Data Output | LVTTL-compatible RXD output; 5-V tolerant, interfaces directly with MCU GPIO or UART peripheral. |
| AB (Pin 5) | Autobaud Loopback Enable | Active-high control: places driver in high-Z while enabling internal D→R loopback for baud detection. |
| CANL (Pin 6) | Differential Bus Low | Terminated bus line; connects to 120-Ω end-of-bus termination or stub network via twisted-pair cable. |
| CANH (Pin 7) | Differential Bus High | Complementary bus line; paired with CANL to form noise-rejecting differential signaling channel. |
| RS (Pin 8) | Mode/Slew Control | Selects high-speed (GND), slope control (10–100 kΩ to GND), or standby (VCC) modes; sets driver edge rate. |
Key Features
| Feature | Design Value |
|---|---|
| Autobaud Loopback Mode | Enables controller-initiated baud rate detection via internal D→R path without disturbing bus traffic or requiring external loopback hardware. |
| Adjustable Driver Slew Rate | Configurable via RS pin resistor (10 kΩ → ~15 V/μs; 100 kΩ → ~2.0 V/μs) to optimize EMI vs. timing margin trade-offs. |
| Thermal Shutdown Protection | Activates at 170°C junction temperature, disabling driver output until safe thermal recovery - prevents permanent damage under overload. |
| Unpowered Node Isolation | Bus pins remain high-impedance when VCC = 0 V, eliminating risk of bus contention or backfeeding in hot-swap or partial-power-down systems. |
| Glitch-Free Power Sequencing | Ensures R and D outputs remain in valid logic states during VCC ramp-up/down, avoiding spurious CAN frame generation or reception errors. |
Applications
| Industrial Automation | Vehicle Telematics |
|---|---|
Use Scenario: Distributed I/O modules communicating over CANopen in factory PLC networks with long cable runs and variable ground potentials. IC Role / Device Role / Timing Role: Physical layer interface between ARM Cortex-M host controller and differential CAN bus; provides timing-critical signal integrity and fault resilience. Use Value: ±36-V bus fault tolerance and –7 V to 12 V common-mode range prevent communication failure during motor drive switching transients. |
Use Scenario: Engine control unit (ECU) gateway node synchronizing baud rate dynamically across mixed-speed CAN subnets in heavy-duty trucks. IC Role / Device Role / Timing Role: CAN transceiver with autobaud loopback enabling real-time bit timing alignment without bus interruption. Use Value: AB pin-triggered internal loopback allows ECU firmware to detect dominant/recessive edge timing and lock baud rate autonomously. |
| Building HVAC Control | Robotics Motor Drive |
Use Scenario: Chiller plant controllers exchanging sensor data and actuator commands over DeviceNet using daisy-chained topology. IC Role / Device Role / Timing Role: Signal translator between microcontroller UART and robust differential CAN physical layer; handles multi-node arbitration and error framing. Use Value: 200-μA standby current extends battery life in wireless gateway nodes while maintaining bus listen capability for wake-on-CAN. |
Use Scenario: Servo drive module receiving motion profiles and reporting position feedback via SAE J1939 in collaborative robotic arms. IC Role / Device Role / Timing Role: High-integrity CAN bus interface with thermal shutdown and cross-wire protection against motor winding shorts. Use Value: Thermal shutdown at 170°C protects against latch-up during prolonged stall conditions, preserving system-level safety integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CAN transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65HVD233DR | Includes loopback (LBK) mode but lacks autobaud; identical pinout and SOIC-8 package; same 200-μA standby current. | No internal D→R autobaud path; requires external software/hardware loopback for baud detection. | Select when diagnostic self-test via LBK suffices and autobaud is not required. |
| MCP2551-I/P | 5-V supply only; no RS pin slew control; ±25-V fault protection; no autobaud or loopback mode; DIP-8 package. | Not pin-compatible; requires level-shifting for 3.3-V MCUs; limited to legacy 5-V CAN systems. | Select only for retrofit into existing 5-V designs where voltage translation and layout revision are acceptable. |
Compared with SN65HVD233DR and MCP2551-I/P, the SN65HVD235DR uniquely delivers autobaud loopback in a 3.3-V SOIC-8 footprint - enabling seamless baud synchronization in mixed-rate CAN networks without protocol-layer changes or external components.
Availability
SN65HVD235DR is available at Aetrix Electronics and suitable for industrial automation, vehicle telematics, and building HVAC control requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for SN65HVD235DR 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 automotive and industrial qualification expertise.
The SN65HVD235DR belongs to TI's SN65HVD23x family of 3.3-V CAN transceivers, designed specifically for noise-immune, fault-tolerant communication in harsh industrial and transportation environments.
FAQ
What is the primary function of the AB pin on the SN65HVD235DR?
The AB (Autobaud) pin on the SN65HVD235DR is an active-high input that enables autobaud loopback mode. When driven high, it disables the driver output (placing CANH/CANL in high-impedance) while activating an internal D-to-R signal path. This allows the connected microcontroller to measure edge timing on the R output and synchronize its baud rate to the bus without disrupting ongoing CAN traffic. The SN65HVD235DR uses this feature to support dynamic baud detection in multi-speed CAN networks.
Does the SN65HVD235DR support ISO 11898-2 compliance?
Yes, the SN65HVD235DR is explicitly designed and tested to comply with ISO 11898-2:2016 for high-speed CAN physical layer requirements. It meets specifications including differential output voltage (1.5–3.0 V dominant), common-mode range (–7 V to +12 V), bus fault tolerance (±36 V), and electromagnetic compatibility performance. Compliance is confirmed in TI's official datasheet SLLS557H and applies directly to the SN65HVD235DR device under recommended operating conditions.
What is the maximum data rate supported by the SN65HVD235DR?
The SN65HVD235DR supports data rates up to 1 Mbps under standard CAN 2.0B timing constraints. This maximum rate is achievable in high-speed mode (RS pin grounded) with appropriate PCB layout, termination, and bus length ≤ 40 m. At lower slew rates - e.g., with a 100-kΩ resistor on RS - the usable data rate decreases due to increased rise/fall times, but the SN65HVD235DR remains functional at lower speeds for EMI-sensitive applications.
How does the RS pin affect operation of the SN65HVD235DR?
The RS pin on the SN65HVD235DR selects operational mode and controls driver slew rate: pulled to GND for high-speed mode (fastest edges), pulled to VCC for standby mode (200-μA quiescent current, receiver active), or biased with a 10–100-kΩ resistor to GND for slope control (adjustable edge rate from ~2.0 to ~15 V/μs). These configurations are validated in the SN65HVD235DR datasheet and directly impact EMI, timing margin, and bus settling behavior.
Is the SN65HVD235DR compatible with 5-V microcontrollers?
Yes, the SN65HVD235DR features 5-V-tolerant LVTTL I/Os on D (input) and R (output) pins, allowing direct interfacing with 5-V logic without level shifters. Its VCC supply remains strictly 3.3 V (3.0–3.6 V), but input voltage tolerance extends to 5.5 V, and output high/low levels meet LVTTL thresholds under 3.3-V operation. This dual-voltage compatibility simplifies integration with mixed-supply systems containing both 3.3-V and 5-V controllers.
SN65HVD235DR 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:
- 100 mV
- Data Rate:
- 1Mbps
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SN65HVD235DR FAQ
1.How can I place an order for SN65HVD235DR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65HVD235DR 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 SN65HVD235DR reliable?
The price and inventory of SN65HVD235DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65HVD235DR is usually 5 days.
3.What payment methods are accepted for SN65HVD235DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65HVD235DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65HVD235DR?
SN65HVD235DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65HVD235DR 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 SN65HVD235DR?
For technical support, including SN65HVD235DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65HVD235DR requirements.
6.How does Aetrix verify that SN65HVD235DR is sourced from the original manufacturer or authorized distributors?
All SN65HVD235DR 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 SN65HVD235DR meets industry standards.
7.What is the process for return or replacement of SN65HVD235DR?
All SN65HVD235DR units undergo pre-shipment inspection (PSI). If there is an issue with SN65HVD235DR, 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 SN65HVD235DR part is unused and in its original packaging.
Return procedure for SN65HVD235DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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