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Texas Instruments SN65HVD234DR
- Part No.:
- SN65HVD234DR
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN65HVD234DR.pdf
- Description:
- IC TRANSCEIVER HALF 1/1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,451
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Product details
Overview
SN65HVD234DR from Texas Instruments is a 3.3-V CAN bus transceiver providing bidirectional differential communication between a CAN controller and ISO 11898-2-compliant physical bus. It delivers 1-Mbps data rate, ±36-V bus fault protection, ±16-kV HBM ESD immunity, –7 V to 12 V common-mode range, and ultra-low 50-nA sleep-mode current. It is used in industrial automation nodes requiring robust, low-power CAN interface with thermal shutdown and slope control.
For engineers reviewing the SN65HVD234DR datasheet, SN65HVD234DR pinout, SN65HVD234DR application, or SN65HVD234DR equivalent, key selection criteria include its 50-nA sleep current, EN-controlled ultra-low-power mode, RS-adjustable slew rate, 8-pin SOIC package, and compatibility with CANopen, SAE J1939, and DeviceNet systems.
Technical Context
The SN65HVD234DR implements a fully integrated CAN physical layer transceiver with separate driver and receiver paths, monolithic output during power cycling, and glitch-free I/O behavior during power-up/down. Its EN pin directly controls entry into and exit from a 50-nA sleep state where both driver and receiver are disabled - distinct from the 200-μA standby mode activated by RS = VCC.
It supports three operational modes via the RS pin: high-speed (RS = GND), slope-controlled (RS pulled to GND via 10–100 kΩ), and listen-only standby (RS = VCC). Unlike SN65HVD233 and SN65HVD235, it lacks loopback or autobaud functionality - its EN pin exclusively enables/disables full device operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.3 V nominal (3 V to 3.6 V); enables direct interface with 3.3-V microcontrollers without level shifting. |
| Data Rate | Up to 1 Mbps; supports high-speed CAN networks in motor control and real-time industrial systems. |
| Sleep Current | 50 nA typical; allows battery-powered or energy-harvested nodes to remain connected to CAN bus for years. |
| Bus Fault Protection | ±36 V on CANH/CANL; prevents damage from wiring faults, load dumps, or ground offsets in harsh environments. |
| Common-Mode Range | –7 V to +12 V; accommodates large ground potential differences across long cable runs in factory floors or vehicles. |
| ESD Protection | ±16 kV HBM on CANH/CANL/GND; eliminates need for external TVS diodes in many industrial designs. |
| Thermal Shutdown | Activates at 170 °C junction temperature; protects against latch-up or overcurrent failure during bus contention. |
Pinout & Package
SN65HVD234DR is housed in an 8-pin SOIC (D) package measuring 4.90 mm × 3.91 mm, with standard gull-wing leads and surface-mount footprint per JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D (Pin 1) | Driver input (TXD) | LVTTL-compatible logic input; dominant (LOW) drives bus to recessive/dominant state; 5-V tolerant. |
| GND (Pin 2) | Ground reference | Primary return path for VCC and bus bias currents; must be low-impedance to maintain common-mode integrity. |
| VCC (Pin 3) | Power supply | 3.3-V supply only; decoupling capacitor (100 nF) required within 10 mm of pin to suppress switching noise. |
| R (Pin 4) | Receiver output (RXD) | LVTTL-compatible logic output; HIGH = recessive, LOW = dominant; 5-V tolerant; drives MCU RX pin directly. |
| EN (Pin 5) | Enable control | Active-HIGH enable: logic HIGH activates normal operation; logic LOW forces 50-nA sleep mode (driver + receiver off). |
| CANL (Pin 6) | Differential bus line (low) | Terminates to 120 Ω at network ends; connects to twisted-pair CAN-L wire; withstands ±36 V faults. |
| CANH (Pin 7) | Differential bus line (high) | Terminates to 120 Ω at network ends; connects to twisted-pair CAN-H wire; withstands ±36 V faults. |
| RS (Pin 8) | Mode select | Configures driver slew: GND = high speed (~15 V/μs), 10–100 kΩ to GND = adjustable slope, VCC = standby (200 μA). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low sleep current | 50 nA typical enables multi-year battery life in remote sensor nodes without sacrificing bus presence. |
| Adjustable driver transition time | RS pin resistor (10–100 kΩ) tunes slew rate from ~2 V/μs to ~15 V/μs to meet EMC emission limits. |
| Unpowered node isolation | Device draws no current and presents high-impedance bus terminals when VCC = 0, preventing bus disturbance. |
| Thermal shutdown protection | Automatically disables driver/receiver at 170 °C junction temperature and recovers upon cooling. |
| Glitch-free I/O during power cycling | Ensures R output remains stable and D input does not inject spurious pulses during VCC ramp-up/down. |
Applications
| Industrial Automation Node | Motor Control Interface |
|---|---|
Use Scenario: Distributed I/O module in PLC backplane communicating with central controller over CAN bus. IC Role / Device Role / Timing Role: Physical-layer transceiver bridging MCU UART-to-CAN protocol stack; handles differential signaling, bus arbitration, and fault recovery. Use Value: ±36-V fault tolerance ensures uptime during field wiring errors; 50-nA sleep mode extends maintenance intervals in unpowered standby. |
Use Scenario: Brushless DC motor drive with embedded CAN for torque/speed feedback and firmware updates. IC Role / Device Role / Timing Role: Real-time CAN PHY enabling sub-100-ns propagation delay (tPLH/tPHL ≤ 85 ns) for closed-loop timing-critical commands. Use Value: Slope control via RS pin reduces radiated emissions from fast edge rates, easing CE/FCC compliance in motor enclosures. |
| Building HVAC Controller | Onboard Diagnostic Node |
Use Scenario: Chiller plant controller interfacing with multiple zone sensors and actuators via CANopen network. IC Role / Device Role / Timing Role: Robust bus interface supporting –40 °C to +125 °C ambient; maintains >120-node network capacity via high-input impedance. Use Value: –7 V to +12 V common-mode range accommodates ground shifts across large building wiring distances without signal loss. |
Use Scenario: Automotive-grade telematics module monitoring battery voltage, temperature, and CAN bus health. IC Role / Device Role / Timing Role: Always-on CAN monitor using EN pin to cycle between active diagnostics and 50-nA sleep to minimize parasitic drain. Use Value: Thermal shutdown prevents thermal runaway during prolonged bus short-circuits, meeting AEC-Q100 reliability expectations. |
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 LBK pin for driver-to-receiver loopback; no EN pin; 200-μA standby (no 50-nA sleep) | Preferred for self-test diagnostics in safety-critical nodes where loopback validation is required pre-boot | Select SN65HVD233DR if internal TX-to-RX loopback is needed; avoid if ultra-low sleep current is mandatory |
| SN65HVD235DR | Includes AB pin for autobaud loopback; no EN pin; supports bus-synchronized baud rate detection | Used in legacy CAN networks with variable bit rates or mixed-node systems requiring dynamic rate negotiation | Select SN65HVD235DR only when autobaud capability is explicitly required; otherwise SN65HVD234DR offers lower quiescent power |
Compared with SN65HVD233DR and SN65HVD235DR, the SN65HVD234DR uniquely provides the lowest sleep current (50 nA vs 200 μA) and dedicated EN control - making it optimal for energy-constrained, always-connected CAN nodes where diagnostic loopback or autobaud are unnecessary.
Availability
SN65HVD234DR is available at Aetrix Electronics and suitable for industrial automation, motor control, and building HVAC systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for SN65HVD234DR 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 over 50 years of innovation in industrial and automotive interfaces.
The SN65HVD23x family was designed specifically for ruggedized 3.3-V CAN implementations in factory automation, transportation, and building systems - prioritizing fault resilience, low-power operation, and interoperability with ISO 11898-2.
FAQ
What is the primary function of the EN pin on the SN65HVD234DR?
The EN (Enable) pin on the SN65HVD234DR is a digital control input that places the device into ultra-low-power sleep mode (50 nA typical) when driven LOW, disabling both driver and receiver circuits. When driven HIGH, it enables normal operation - high-speed or slope-controlled mode - depending on the RS pin configuration. This pin is exclusive to the SN65HVD234DR and is not present on SN65HVD233DR or SN65HVD235DR. The SN65HVD234DR's EN pin enables precise system-level power gating without relying on RS-based standby.
How does the RS pin affect the SN65HVD234DR's driver performance?
The RS pin on the SN65HVD234DR selects among three driver operating modes: pulling RS to GND enables high-speed mode (~15 V/μs slew rate), connecting RS to GND via 10–100 kΩ enables slope control (adjustable rise/fall times), and pulling RS to VCC activates 200-μA standby mode. Unlike EN, RS does not disable the receiver - it only modulates driver edge rate or enters low-power listen-only state. This allows EMI optimization while maintaining bus monitoring capability, a feature confirmed in the SN65HVD234DR datasheet Section 5.
Does the SN65HVD234DR support loopback or autobaud functionality?
No, the SN65HVD234DR does not support loopback or autobaud functionality. Its Pin 5 is designated as EN (Enable), not LBK (loopback) or AB (autobaud) - distinguishing it from SN65HVD233DR (LBK pin) and SN65HVD235DR (AB pin). The SN65HVD234DR datasheet explicitly states "SN65HVD234: Ultra Low-Current Sleep Mode" and omits any loopback or autobaud description in its Feature and Pin Function tables. Therefore, applications requiring internal TX-to-RX diagnostics or bus-synchronized baud detection must use SN65HVD233DR or SN65HVD235DR instead.
What is the maximum common-mode voltage range supported by the SN65HVD234DR?
The SN65HVD234DR supports a common-mode voltage range of –7 V to +12 V on the CANH and CANL bus lines, as specified in Section 8.3 (Recommended Operating Conditions) of its datasheet. This wide range ensures reliable operation despite ground potential differences across long cable runs - critical in industrial plants or vehicle chassis networks. It exceeds the minimum ±2 V requirement of ISO 11898-2 and enables robust communication even under severe grounding mismatches or transient coupling events.
Can the SN65HVD234DR operate with a 5-V supply?
No, the SN65HVD234DR is strictly a 3.3-V supply device with absolute maximum VCC rating of 7 V and recommended operating range of 3 V to 3.6 V. Applying 5 V violates its Absolute Maximum Ratings and risks permanent damage. However, its D and R pins are 5-V tolerant - meaning they can safely interface with 5-V logic controllers without level shifters. The VCC pin must be supplied only with a regulated 3.3-V source, as confirmed in Table 8.1 and Section 8.3 of the official TI datasheet.
SN65HVD234DR 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
SN65HVD234DR FAQ
1.How can I place an order for SN65HVD234DR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65HVD234DR 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 SN65HVD234DR reliable?
The price and inventory of SN65HVD234DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65HVD234DR is usually 5 days.
3.What payment methods are accepted for SN65HVD234DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65HVD234DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65HVD234DR?
SN65HVD234DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65HVD234DR 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 SN65HVD234DR?
For technical support, including SN65HVD234DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65HVD234DR requirements.
6.How does Aetrix verify that SN65HVD234DR is sourced from the original manufacturer or authorized distributors?
All SN65HVD234DR 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 SN65HVD234DR meets industry standards.
7.What is the process for return or replacement of SN65HVD234DR?
All SN65HVD234DR units undergo pre-shipment inspection (PSI). If there is an issue with SN65HVD234DR, 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 SN65HVD234DR part is unused and in its original packaging.
Return procedure for SN65HVD234DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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