Texas Instruments TCAN334GDR

Overview

TCAN334GDR from Texas Instruments is a 3.3V CAN FD transceiver in SOIC-8 package, supporting up to 5 Mbps data rate and compliant with ISO 11898-2. It features shutdown and low-power standby modes with wake capability, ±12V common-mode range, ±14V bus fault protection, and total loop delay <135 ns. It is used in industrial automation and battery-powered CAN FD networks requiring robust EMC and fault resilience.

For engineers reviewing the TCAN334GDR datasheet, TCAN334GDR pinout, TCAN334GDR application, or TCAN334GDR equivalent, key selection criteria include its 5-Mbps CAN FD timing symmetry (ΔtSYM_5 ≤ 15 ns), driver/receiver dominant time-out (1.2–3.8 ms / 1.6–5 ms), integrated 12-kV IEC 61000-4-2 ESD protection on CANH/CANL, and compatibility with 3.3V CAN controllers without level-shifting.

Technical Context

The TCAN334GDR implements a high-speed CAN physical layer transceiver with dual operating modes: Normal mode for full-duplex communication and Standby mode (enabled via STB pin) for ultra-low quiescent current (15–20 µA). Its differential driver and receiver are optimized for CAN FD's flexible data-rate requirements, with verified timing symmetry at both 2 Mbps and 5 Mbps (ΔtSYM_5 ≤ 15 ns).

It integrates critical protection logic including TXD dominant time-out (tTXD_DTO) and RXD dominant time-out (tRXD_DTO), undervoltage lockout (UVVCC = 2.2–2.6 V rising), thermal shutdown (TSD = 175°C), and current-limited bus pins. The device remains high-impedance on bus and logic pins when unpowered, enabling hot-plug and glitch-free power sequencing.

Key Specifications

Pinout & Package

TCAN334GDR is housed in an 8-pin SOIC package (4.9 mm × 6 mm), pin-compatible with industry-standard CAN transceivers. Pin functions are validated per TI SLLSEQ7F Rev. May 2025 datasheet Figure 4-3 and Table 4-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TCAN334DR and SN65HVD234DR, the TCAN334GDR uniquely delivers verified 5-Mbps CAN FD timing performance, ultra-low standby current (15–20 µA), and ±12-kV system-level ESD protection-making it the only option among the three qualified for next-generation high-throughput, energy-sensitive CAN FD deployments.

Availability

TCAN334GDR is available at Aetrix Electronics and suitable for industrial automation, automotive diagnostics, and building management systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TCAN334GDR 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 company specializing in analog, embedded processing, and connectivity solutions, with leadership in automotive, industrial, and communications markets.

The TCAN33x family was designed specifically for robust, high-speed CAN FD physical layer interfacing in electrically noisy, safety-critical environments-emphasizing timing precision, fault resilience, and low-power operability.

FAQ

What is the maximum data rate supported by the TCAN334GDR?

The TCAN334GDR supports data rates up to 5 Mbps, as confirmed in the TI datasheet SLLSEQ7F (Rev. May 2025), Section 5.6 Switching Characteristics. This enables full utilization of the CAN FD data phase in applications such as automotive diagnostics and industrial control. The TCAN334GDR achieves verified timing symmetry (ΔtSYM_5 ≤ 15 ns) at 5 Mbps, distinguishing it from 1-Mbps variants like TCAN334DR. Its loop delay remains under 135 ns, ensuring timing compliance for high-speed bit sampling.

Does the TCAN334GDR support low-power modes, and how are they controlled?

Yes, the TCAN334GDR supports two low-power modes: Shutdown (via SHDN pin) and Standby (via STB pin), both documented in Section 4 and Table 4-1 of the datasheet. Driving SHDN high reduces supply current to ≤2.5 µA; driving STB high enables wake-capable standby at 15–20 µA. Both pins have internal pull-downs, ensuring default Normal mode operation when left unconnected. These modes are fully compatible with CAN FD bus activity detection and do not disrupt network arbitration.

How does the TCAN334GDR protect against bus faults and ESD events?

The TCAN334GDR provides ±14 V bus fault protection on CANH and CANL terminals and exceeds ±12 kV IEC 61000-4-2 contact discharge ESD rating on those same pins, per Section 5.2 of the datasheet. It also integrates driver and receiver dominant time-out (DTO) circuits, undervoltage lockout (UVVCC = 2.2–2.6 V), and thermal shutdown (175°C). These protections eliminate the need for external TVS diodes in most industrial and automotive applications, reducing BOM cost and PCB area.

Is the TCAN334GDR pin-compatible with other devices in the TCAN33x family?

Yes, the TCAN334GDR shares the same 8-pin SOIC (D) and SOT-23 (DCN) footprints and pin assignments with all TCAN33x devices, including TCAN330GDR, TCAN332GDR, and TCAN337GDR, as shown in Figures 4-1 through 4-4 and Table 4-1 of the datasheet. Pin functions (e.g., SHDN on Pin 5, STB on Pin 8) are consistent across G-suffix variants. However, non-G parts (e.g., TCAN334DR) share pinout but lack 5-Mbps timing specifications and symmetry validation.

What is the operating temperature range for the TCAN334GDR, and is it suitable for under-hood automotive use?

The TCAN334GDR is rated for ambient operation from –40°C to +125°C (Section 5.3), making it suitable for under-hood automotive applications where junction temperatures may reach 150°C. Its thermal shutdown threshold is 175°C with 5°C hysteresis, and its RθJA is 114.4°C/W in SOIC-8. When mounted on a 2-layer board with adequate copper pour, the TCAN334GDR maintains reliable operation in engine control units, battery management systems, and ADAS domain controllers without derating.