TCAN1051-Q1 - Automotive Fault-Protected CAN FD Transceiver | Texas Instruments
MPN: TCAN1051-Q1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.6 | $16.00 |
| 100 | $1.35 | $135.00 |
| 500 | $1.2 | $600.00 |
| 1,000 | $1.05 | $1,050.00 |
TCAN1051-Q1 Overview
A CAN transceiver is the physical-layer interface between a CAN protocol controller (MCU) and the two-wire differential CAN bus. In the automotive hierarchy, the CAN bus connects ECUs such as engine control, body control, and infotainment modules. The transceiver converts TXD/RXD logic signals from the MCU into differential CANH/CANL signals on the bus and provides bus fault protection.
Key features include high on-chip IEC ESD protection, silent mode for reduced power consumption, and AEC-Q100 automotive qualification. The device is designed for harsh automotive environments, with fault protection that withstands bus transients. The flexible data-rate option enables CAN FD networks up to 5 Mbps, making it suitable for modern vehicle architectures that require higher bandwidth.
The TCAN1051 family uses a robust physical-layer design with protection diodes and a dominant time-out function, ensuring reliability under bus shorts and high-voltage transients. The device supports both 5 V and (in V variants) 3.3 V I/O reference voltage, allowing direct interface with low-voltage microcontrollers.
Typical applications include automotive body control modules, battery management systems, powertrain control, and industrial automation networks. The TCAN1051-Q1 is also widely used in diagnostics (OBD-II) and infotainment systems.
Design consideration: ensure proper termination (120 ohm) and place TVS diodes and bus filtering capacitors close to the on-board connectors to prevent transient events from propagating into the PCB.
Drop-in alternatives for TCAN1051-Q1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TCAN1051-Q1 (same form factor and footprint) — differing in Package, Function, Automotive Qualification, Data Rate, Protocol.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TCAN1051DQ1
✅ Drop-In📋 Reference alternative (not in catalog)
TCAN1051G-Q1
✅ Drop-In📋 Reference alternative (not in catalog)
TCAN1051HVDRQ1
✅ Drop-In📋 Reference alternative (not in catalog)
TCAN1042GVDRQ1
✅ Drop-In✓ In Stock
$0.349 / Unit
View Datasheet →TJA1051T/3/1
✅ Drop-In✓ In Stock
$0.4102 / Unit
View Datasheet →TLE9251V
✅ Drop-In📋 Reference alternative (not in catalog)
NCV7342
✅ Drop-In📋 Reference alternative (not in catalog)
TCAN1051-Q1 Specifications
| Type | CAN Transceiver |
| Protocol | ISO 11898-2 (2016) High-Speed CAN |
| Data Rate (base) | Up to 2 Mbps |
| Data Rate (G suffix) | Up to 5 Mbps |
| Secondary I/O Supply (V suffix) | Yes - secondary power supply input for I/O voltage |
| Fault Protection | High on-chip IEC ESD protection; external TVS optional |
| Package | 8-SOIC |
| Mounting Type | Surface Mount |
| Qualification | Automotive (AEC-Q100) |
| Number of Drivers/Receivers | 1/1 |
| Function | Fault-protected CAN transceiver with flexible data-rate and sleep mode |
| RoHS | Compliant |
TCAN1051-Q1 Pin Configuration
| Pin 1 | TXD — Driver input from MCU |
| Pin 2 | GND — Ground |
| Pin 3 | VCC — Supply voltage |
| Pin 4 | RXD — Receiver output to MCU |
| Pin 5 | VIO — I/O supply reference (V variants); NC for non-V |
| Pin 6 | CANL — CAN low bus line |
| Pin 7 | CANH — CAN high bus line |
| Pin 8 | S — Silent mode control input |
Typical Applications
TCAN1051-Q1 is suitable for 6 applications: Automotive Body Electronics, Battery Management Systems, Industrial Automation, Powertrain Control, On-Board Diagnostics (OBD-II), Infotainment and Telematics.
Automotive Body Electronics
TCAN1051-Q1 provides the physical CAN interface for body control modules (BCM), door/seat modules, and lighting controllers. Its high on-chip IEC ESD protection and fault tolerance to bus transients ensure reliable communication in the harsh automotive electrical environment. The device's silent mode helps reduce current draw when the vehicle is parked. Recommended companion MCU: TMS320F280040C-Q1 for CAN communication.
Recommended
Battery Management Systems
BMS topologies use CAN to transmit cell voltage, temperature, and state-of-charge data between battery management ICs and the main ECU. TCAN1051-Q1's AEC-Q100 qualification and ISO 11898-2 compliance make it suitable for automotive BMS nodes. It supports up to 2 Mbps CAN FD, allowing faster data transfer. Pair with BQ79616PAPRQ1 battery monitor for a complete solution.
Recommended
Industrial Automation
In industrial robots, PLCs, and factory automation, CAN networks connect sensors and actuators over a robust differential bus. TCAN1051-Q1's fault protection and wide operating temperature handle noisy industrial environments. While not specified for industrial temperature, the automotive qualification implies robust performance. Recommended companion: ISO1042 isolated CAN transceiver for galvanic isolation.
Recommended
Powertrain Control
Powertrain ECUs (engine, transmission, hybrid) require fault-tolerant CAN transceivers for real-time control. TCAN1051-Q1 meets ISO 11898-2:2016, supports 2 Mbps CAN FD for high-throughput parameter exchange, and has silent mode for diagnostics. Its SOIC-8 package is small enough for dense ECU layouts. Recommended MCU: TMS320F280037C-Q1 with integrated CAN controller.
Recommended
On-Board Diagnostics (OBD-II)
OBD-II systems use the CAN bus for emissions and diagnostics. TCAN1051-Q1 is an ideal physical-layer PHY due to its compliance with automotive CAN standards and high ESD protection. It can operate in silent mode during diagnostic sessions to avoid disrupting vehicle communication. Recommended companion: TJA1051T/3/1 or TCAN1051 variants for dual-bus designs.
Recommended
Infotainment and Telematics
Infotainment head units and telematics modems use CAN for communication with vehicle displays, audio systems, and connectivity modules. TCAN1051-Q1's flexible data rate supports high-speed data streaming, while its automotive qualification ensures reliability. The V-suffix variant with VIO allows interfacing with 3.3V application processors. Recommended companion: AM62A1-Q1 automotive SoC.
Recommended
Recommended Products Summary
Engineering reference data for TCAN1051-Q1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TCAN1042GVDRQ1 | TJA1051T/3/1 | TLE9251V |
|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Texas Instruments | Texas Instruments | NXP Semiconductors | Infineon |
| Data Rate | Up to 2 Mbps (5 Mbps with G suffix) | Up to 5 Mbps | Up to 1 Mbps | Up to 1 Mbps |
| Operating Mode | Silent mode | Standby mode | Standby mode | Standby mode |
| AEC-Q100 | Yes | Yes | Yes | Yes |
Key Differentiators
- Supports CAN FD up to 2 Mbps (5 Mbps with G suffix) (vs NXP TJA1051T/3/1)
- High on-chip IEC ESD protection (vs onsemi NCV7342)
- Flexible variant options (VIO and speed) (vs Infineon TLE9251V)
Design Notes
Place TVS diodes and bus filtering capacitors as close to the on-board connectors as possible to prevent noisy transient events from propagating further into the PCB and system. Use a 120-ohm termination resistor at each end of the CAN bus.
Keep the CAN bus lines twisted and routed away from high-current switching nodes. Maintain proper ground planes and use a single-point ground for the transceiver. The differential nature of CAN rejects common-mode noise, but good layout is essential to preserve signal integrity.
The SOIC-8 package has moderate thermal dissipation. Ensure copper pours around the GND pin to help heat spreading. In high-density automotive ECUs, monitor junction temperature under continuous bus traffic, as the transceiver's current draw is low but can rise during bus fault conditions.
Compliance Information
Automotive AEC-Q100 qualified. RoHS compliant per TI product page. Halogen-free status not explicitly confirmed.
