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Texas Instruments TCAN1042HDR
- Part No.:
- TCAN1042HDR
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TCAN1042HDR.pdf
- Description:
- IC TRANSCEIVER 1/1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,060
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Product details
Overview
TCAN1042HDR from Texas Instruments is a fault-protected high-speed CAN transceiver supporting ISO 11898-2:2016 and ISO 11898-5:2007, delivering 2 Mbps CAN FD operation with ±70 V bus fault protection, 110 ns typical loop delay, and operation across –55°C to 150°C junction temperature for automotive and industrial CAN networks.
For engineers reviewing the TCAN1042HDR datasheet, TCAN1042HDR pinout, TCAN1042HDR application, or TCAN1042HDR equivalent, this device is selected for robust CAN FD node design in harsh environments requiring high ESD immunity (±16 kV HBM), I/O voltage flexibility (3.3 V/5 V MCU compatibility), and fail-safe unpowered behavior on bus and logic lines.
Technical Context
The TCAN1042HDR implements a differential driver/receiver pair with integrated dominant timeout, thermal shutdown, and undervoltage protection on both VCC and VIO (when present). Its architecture supports classic CAN and CAN FD up to 2 Mbps with symmetrical propagation delays optimized for timing margin in loaded networks.
It features dual-supply capability (VCC for transceiver core, VIO for logic interface), enabling level-shifting between 3.3 V MCUs and 5 V CAN bus domains. The device enters low-power standby mode via active-high STB control and supports remote wake-up with glitch-free power sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bus Fault Protection | ±70 V - Enables reliable operation in automotive and heavy machinery where battery dump or load-dump transients exceed ±60 V. |
| CAN FD Data Rate | Up to 2 Mbps - Supports flexible data-rate CAN FD frames without requiring "G"-suffix variants; sufficient for most industrial and ISOBUS applications. |
| Loop Delay | 110 ns typical - Tight timing budget allows higher bit rates and longer stub lengths in multi-node CAN FD networks. |
| ESD Protection | ±16 kV HBM on CANH/CANL - Reduces need for external TVS diodes in cost-sensitive designs meeting IEC 61000-4-2 Level 4. |
| Operating Junction Temp | –55°C to +150°C - Qualified for under-hood automotive and industrial motor drive environments without derating. |
| I/O Voltage Range | 3.0 V to 5.5 V on VIO - Allows direct interfacing with 3.3 V microcontrollers while maintaining 5 V CAN bus signaling integrity. |
| Common-Mode Range | ±30 V - Tolerates large ground potential differences in distributed systems like agricultural ISOBUS or factory automation. |
Pinout & Package
TCAN1042HDR is supplied in an 8-pin SOIC package (4.90 mm × 3.91 mm) with standard pinout and GND-connected thermal pad not present. Pin functions are validated per TI SLLSES7D Rev D (October 2021).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - TXD | Digital input | Drives CAN bus state: LOW = dominant, HIGH = recessive; compatible with 3.3 V or 5 V logic thresholds. |
| 2 - GND | Ground reference | Primary return path for VCC, VIO, and bus currents; must be low-impedance to minimize common-mode noise. |
| 3 - VCC | Power supply | 5 V transceiver core supply; includes undervoltage lockout (UVLO) at 4.2 V rising / 4.0 V falling. |
| 4 - RXD | Digital output | Receives bus state: LOW = dominant, HIGH = recessive; output level follows VCC (not VIO) on non-V variants. |
| 5 - NC | No connect | Unbonded terminal on TCAN1042HDR; must remain floating - no routing or pull-up/pull-down required. |
| 6 - CANL | CAN bus I/O | Low-side differential bus line; internally biased and protected to ±70 V; connects to twisted-pair CAN cable. |
| 7 - CANH | CAN bus I/O | High-side differential bus line; complements CANL; enables differential signaling with >1.5 V VOD(dominant). |
| 8 - STB | Digital input | Active-high standby enable; places transceiver in ultra-low-power mode (<5 µA) with bus and RXD in high-Z state. |
Key Features
| Feature | Design Value |
|---|---|
| Fault protection | ±70 V bus tolerance ensures uninterrupted operation during battery clamp events or wiring faults in 24 V systems. |
| Glitch-free power sequencing | Unpowered bus and logic terminals remain high-impedance - prevents back-driving or bus contention during MCU boot or brownout. |
| Dominant time-out (DTO) | Auto-reverts bus to recessive after 1.2–3.8 ms if TXD stuck LOW - prevents network lockup due to MCU firmware hang. |
| Thermal shutdown (TSD) | Triggers at 170°C junction temperature with 5°C hysteresis - protects against sustained overloads or poor heatsinking. |
| Remote wake-up support | Valid CAN bus activity (e.g., dominant pulse ≥0.5 µs) exits standby mode without MCU intervention - reduces system power. |
Applications
| Heavy Machinery ISOBUS | Industrial Motor Drives |
|---|---|
|
Use Scenario: Tractor-mounted implements communicate with central controller via ISO 11783-compliant CAN FD backbone under vibration, dust, and wide temperature swings. IC Role / Device Role / Timing Role: Physical layer interface translating MCU UART/CAN controller signals to ruggedized differential CAN bus with ±70 V fault resilience. Use Value: Eliminates need for external bus protection components while maintaining 2 Mbps frame throughput for real-time actuator commands and sensor feedback. |
Use Scenario: Variable frequency drives exchange status, fault codes, and torque setpoints with PLCs over long CAN runs in electrically noisy factory environments. IC Role / Device Role / Timing Role: Robust transceiver ensuring signal integrity despite ground offsets up to ±30 V and EFT bursts up to ±4 kV. Use Value: Maintains deterministic communication at 500 kbps even with 100+ meter cable runs and multiple nodes, reducing commissioning time. |
| Building Automation Networks | Telecom Base Station Control |
|
Use Scenario: HVAC controllers, lighting panels, and security sensors form distributed CAN FD network across multi-floor commercial buildings with shared ground references. IC Role / Device Role / Timing Role: Level-shifting transceiver (via VIO) enabling 3.3 V ARM-based edge nodes to interoperate with legacy 5 V CAN infrastructure. Use Value: Enables mixed-voltage node deployment without discrete level translators, simplifying BOM and layout for retrofit installations. |
Use Scenario: Remote radio units report temperature, fan speed, and RF status to baseband unit using CAN FD for deterministic, low-latency telemetry. IC Role / Device Role / Timing Role: High-reliability physical layer component operating continuously at 85°C ambient with full thermal shutdown protection. Use Value: Guarantees uptime in sealed outdoor enclosures by surviving junction temperatures up to 150°C without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CAN transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65HVD234DR | Lower bus fault protection (±36 V), no VIO pin, no DTO or TSD, rated only to 125°C junction. | Suitable for benign industrial settings but not automotive or ISOBUS where ±70 V fault immunity is mandated. | Select TCAN1042HDR when bus robustness, extended temperature, or fail-safe features (DTO/TSD) are required. |
| ADM3053BRWZ | Integrated isolated DC-DC converter and transformer driver; 5 kV rms isolation; no VIO; supports only classic CAN (1 Mbps max). | Used where galvanic isolation is mandatory (e.g., medical, grid-tied equipment); adds complexity and cost vs. basic transceiver. | Choose TCAN1042HDR for non-isolated, high-speed CAN FD nodes needing compact footprint and lower BOM count. |
Compared with SN65HVD234DR and ADM3053BRWZ, TCAN1042HDR delivers superior fault resilience, broader temperature range, and CAN FD readiness - making it optimal for next-generation automotive and industrial networks where reliability and data rate scalability are critical.
Availability
TCAN1042HDR is available at Aetrix Electronics and suitable for automotive powertrain modules, industrial motor drives, and building automation systems requiring stable component supply across extended product lifecycles.
Supply support for TCAN1042HDR 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 focused on analog, embedded processing, and connectivity technologies, serving automotive, industrial, and communications markets with high-reliability silicon solutions.
The TCAN1042HDR belongs to TI's fault-protected CAN transceiver family engineered specifically for demanding automotive and industrial applications where bus robustness, thermal resilience, and CAN FD timing precision are essential.
FAQ
What is the bus fault protection rating of the TCAN1042HDR?
The TCAN1042HDR provides ±70 V bus fault protection on CANH and CANL pins, meeting stringent requirements for 24 V vehicle electrical systems and heavy machinery where load-dump transients exceed ±60 V. This rating is confirmed in TI's SLLSES7D datasheet Section 7.1 and applies specifically to "H"-suffix variants like TCAN1042HDR.
Does the TCAN1042HDR support CAN FD operation at 5 Mbps?
No, the TCAN1042HDR supports CAN FD up to 2 Mbps only. Devices with the "G" suffix (e.g., TCAN1042HGR) are required for 5 Mbps operation. The "G" designation is explicitly defined in TI's Device Comparison Table (Section 5) and functional description (Section 3) as the differentiator for 5 Mbps capability.
What is the function of Pin 5 on the TCAN1042HDR?
Pin 5 on the TCAN1042HDR is designated NC (No Connect) - it is unbonded and must remain unconnected. This is confirmed in TI's Pin Functions table (Section 6.1) and applies exclusively to non-"V" variants; devices with "V" suffix use Pin 5 as VIO.
How does the TCAN1042HDR behave when unpowered?
When unpowered (VCC = 0 V), the TCAN1042HDR exhibits ideal passive behavior: CANH/CANL and TXD/RXD pins enter high-impedance states with ≤4.8 µA leakage current, preventing bus loading or logic-line contention. This behavior is verified in Section 7.7 (ILKG(IOFF)) and Feature list ("Ideal passive behavior when unpowered").
Is the TCAN1042HDR compatible with 3.3 V microcontrollers?
Yes, the TCAN1042HDR supports 3.3 V MCUs via its VIO pin (Pin 5 is NC, so VIO functionality is not present on TCAN1042HDR). However, the logic thresholds for TXD and RXD are referenced to VCC (5 V), meaning direct 3.3 V MCU connection requires level-shifting. True 3.3 V logic compatibility requires TCAN1042HVR or TCAN1042HV variants with VIO enabled.
TCAN1042HDR 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:
- -
- Receiver Hysteresis:
- -
- Data Rate:
- 5Mbps
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TCAN1042HDR FAQ
1.How can I place an order for TCAN1042HDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TCAN1042HDR 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 TCAN1042HDR reliable?
The price and inventory of TCAN1042HDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCAN1042HDR is usually 5 days.
3.What payment methods are accepted for TCAN1042HDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCAN1042HDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCAN1042HDR?
TCAN1042HDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCAN1042HDR 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 TCAN1042HDR?
For technical support, including TCAN1042HDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCAN1042HDR requirements.
6.How does Aetrix verify that TCAN1042HDR is sourced from the original manufacturer or authorized distributors?
All TCAN1042HDR 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 TCAN1042HDR meets industry standards.
7.What is the process for return or replacement of TCAN1042HDR?
All TCAN1042HDR units undergo pre-shipment inspection (PSI). If there is an issue with TCAN1042HDR, 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 TCAN1042HDR part is unused and in its original packaging.
Return procedure for TCAN1042HDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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