Texas Instruments TCAN1051VDRQ1

Overview

TCAN1051VDRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive CAN FD transceiver supporting up to 2 Mbps data rate, ±58 V bus fault protection, and dual-supply I/O level shifting (VCC/VIO). It features silent mode, thermal shutdown, driver dominant time-out, and operates across –40°C to 125°C ambient for body electronics and powertrain ECUs.

For engineers reviewing the TCAN1051VDRQ1 datasheet, TCAN1051VDRQ1 pinout, TCAN1051VDRQ1 application, or TCAN1051VDRQ1 equivalent, this device delivers robust high-speed CAN communication in electric vehicle battery management, ADAS domain controllers, and chassis control modules where ESD resilience, fault tolerance, and 3.3 V/5 V MCU interface compatibility are critical.

Technical Context

The TCAN1051VDRQ1 implements a differential bus driver/receiver pair compliant with ISO 11898-2:2016 and ISO 11898-5:2007, with integrated dominant time-out logic limiting TXD low-time to prevent bus lockup at data rates down to 10 kbps. Its VIO pin enables independent 2.8 V–5.5 V logic-level translation for RXD output and TXD input thresholds.

Functional safety support includes documentation for ISO 26262 ASIL-B system integration, while EMC performance meets SAE J2962-2 and IEC 62228-3 up to 500 kbps without external common-mode chokes. Propagation delay is tightly controlled at typical 110 ns loop delay with symmetrical edge timing for timing margin in loaded networks.

Key Specifications

Pinout & Package

TCAN1051VDRQ1 is available in SOIC-8 (4.90 mm × 3.91 mm) package with gull-wing leads, optimized for automated optical inspection and reflow soldering in automotive PCB assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar CAN FD transceiver applications.

Compared with TCAN1051VDRQ1, TCAN1051HVDQ1 offers enhanced bus ruggedness for heavy-duty platforms but lacks I/O level shifting, while SN65HVD256DR provides basic CAN connectivity at lower cost and complexity but omits FD, safety support, and advanced protection features critical for next-generation ECU designs.

Availability

TCAN1051VDRQ1 is available at Aetrix Electronics and suitable for automotive body electronics, electric power steering systems, and battery management applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.

Supply support for TCAN1051VDRQ1 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 automotive ICs, with decades of automotive qualification expertise and ISO/TS 16949-certified manufacturing.

The TCAN1051-Q1 family was designed specifically for high-reliability automotive CAN FD networks, emphasizing fault resilience, functional safety readiness, and seamless integration with 3.3 V/5 V microcontrollers in ECU subsystems.

FAQ

What is the maximum data rate supported by the TCAN1051VDRQ1?

The TCAN1051VDRQ1 supports up to 2 Mbps CAN FD data rate in standard operation. It does not support the 5 Mbps "G" variant capability - that requires part numbers with the "G" suffix (e.g., TCAN1051GVDRQ1). The 2 Mbps limit applies across its full operating temperature range (–40°C to 125°C) and is validated per ISO 11898-2:2016 timing requirements. TCAN1051VDRQ1 maintains stable eye diagrams and jitter performance at this rate even under worst-case bus loading and EMI conditions.

Does the TCAN1051VDRQ1 require external components for basic CAN FD operation?

No, the TCAN1051VDRQ1 operates as a standalone CAN FD transceiver with no mandatory external components. Its integrated driver/receiver, dominant time-out, thermal shutdown, and undervoltage protection eliminate the need for external timers, reset circuits, or current-limiting resistors. External termination (120 Ω) remains required at network ends per ISO 11898-2, but no common-mode choke is needed for SAE J2962-2 compliance up to 500 kbps - a key BOM reduction benefit of TCAN1051VDRQ1.

How does the VIO pin function in the TCAN1051VDRQ1?

The VIO pin on TCAN1051VDRQ1 sets the logic voltage reference for both TXD input thresholds and RXD output levels. When VIO = 3.3 V, TXD recognizes logic high above 2.31 V and RXD drives high at ~3.3 V - enabling direct connection to 3.3 V MCUs without level shifters. VIO must be supplied within 2.8 V–5.5 V and may be tied to VCC only if 5 V MCU interfacing is intended. The VIO pin is inactive (NC) on non-"V" variants like TCAN1051DRQ1.

What happens to the CAN bus terminals when TCAN1051VDRQ1 is unpowered?

When VCC and VIO are both at 0 V, TCAN1051VDRQ1 enters ideal passive behavior: CANH and CANL present high-impedance (>1 MΩ) to the bus, drawing <5 µA leakage current (measured at 5 V bus bias), and TXD/RXD/S pins float with <1 µA leakage. This prevents bus loading or signal corruption during power-down sequences, hot-swap scenarios, or module replacement - a critical feature for modular vehicle architectures where nodes power up/down independently.

Is the TCAN1051VDRQ1 compatible with classic CAN (non-FD) networks?

Yes, TCAN1051VDRQ1 is fully backward-compatible with classic CAN (ISO 11898-2:2003/2007) at data rates up to 1 Mbps. It auto-adapts to frame format and bit timing without configuration changes. All electrical characteristics - including common-mode range (±30 V), bus fault protection (±58 V), and loop delay (110 ns typ.) - are guaranteed for both classic CAN and CAN FD operation. This dual-mode support simplifies ECU migration paths and enables mixed-network deployments during vehicle platform transitions.