Texas Instruments TCAN1044VDRQ1

Overview

TCAN1044VDRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive CAN FD transceiver supporting classical CAN and CAN FD up to 8 Mbps, with ±58 V bus fault protection, 1.7–5.5 V I/O voltage range (including native 1.8 V logic interface), and thermal shutdown at 192 °C - deployed in body control modules and ADAS gateways.

For engineers reviewing the TCAN1044VDRQ1 datasheet, TCAN1044VDRQ1 pinout, TCAN1044VDRQ1 application, or TCAN1044VDRQ1 equivalent, key selection criteria include ISO 11898-2:2016/ISO 11898-5:2007 compliance, standby-mode remote wake-up capability, differential output symmetry (0.9–1.1 V/V), dominant timeout (1.2–4.0 ms), and VSON-8 package thermal resistance (R_ΘJB = 23.9 °C/W).

Technical Context

The TCAN1044VDRQ1 implements a fully isolated CAN physical layer interface with integrated TXD dominant timeout, undervoltage detection on both VCC (4.2–4.4 V rising) and VIO (1.56–1.65 V rising), and symmetrical propagation delays (t_PROP(LOOP1) = 125–210 ns, t_PROP(LOOP2) = 150–210 ns) optimized for timing margin in high-speed CAN FD networks.

It supports three operational states: normal mode (active driver/receiver), low-power standby mode (bus pins high-impedance, RXD tri-stated, 0.2–1 µA supply current), and unpowered hot-plug state (no load on bus or controller I/O), with bus common-mode range of ±12 V and differential input resistance of 40–90 kΩ.

Key Specifications

Pinout & Package

TCAN1044VDRQ1 is packaged in an 8-pin VSON (DRB) with 3 mm × 3 mm footprint and exposed thermal pad electrically connected to GND - optimized for automated optical inspection and PCB thermal relief via direct connection to ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TCAN1044VDRQ1 and TCAN1043DRQ1, the TCAN1044VDRQ1 provides essential 1.8 V logic compatibility and superior thermal dissipation in VSON-8 - critical for compact ADAS and gateway modules operating at 125 °C ambient, whereas TCAN1043DRQ1 serves simpler 5 V designs where thermal headroom is available.

Availability

TCAN1044VDRQ1 is available at Aetrix Electronics and suitable for automotive body control modules, ADAS gateways, infotainment head units, and sensor fusion hubs requiring stable component supply across extended temperature and lifecycle demands.

Supply support for TCAN1044VDRQ1 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 functional safety documentation support.

The TCAN1044VDRQ1 belongs to TI's automotive-grade CAN FD transceiver product line, engineered specifically for high-reliability, fault-tolerant communication in body electronics, domain controllers, and advanced driver assistance systems.

FAQ

What is the purpose of the VIO pin on the TCAN1044VDRQ1?

The VIO pin on the TCAN1044VDRQ1 sets the logic I/O voltage level (1.7–5.5 V) for TXD and RXD signals, enabling direct interface with 1.8 V, 2.5 V, 3.3 V, or 5 V microcontrollers without external level shifters. When VIO is supplied, RXD output swing and input thresholds scale accordingly - a key enabler for low-voltage MCU integration in modern automotive ECUs. The TCAN1044VDRQ1 leverages this pin to maintain signal integrity and reduce BOM count.

Does the TCAN1044VDRQ1 support remote wake-up from standby mode?

Yes, the TCAN1044VDRQ1 supports ISO 11898-2:2016-compliant remote wake-up from standby mode using the standardized wake-up pattern (WUP) on the CAN bus. When STB is asserted high, the transceiver enters low-power standby (0.2–1 µA ICC), yet retains bus monitoring capability; valid WUP pulses on CANH/CANL trigger automatic exit to normal mode and drive RXD low to alert the controller. This behavior is fully implemented in the TCAN1044VDRQ1 and verified per automotive test plans.

What is the maximum CAN FD data rate supported by the TCAN1044VDRQ1?

The TCAN1044VDRQ1 supports CAN FD data rates up to 8 Mbps in normal mode, with guaranteed timing performance (t_PROP(LOOP1) ≤ 210 ns, t_PROP(LOOP2) ≤ 210 ns) under recommended operating conditions. It also maintains full compatibility with classical CAN (125–500 kbps) and intermediate FD rates including 2 Mbps and 5 Mbps - all validated per ISO 11898-2:2016 conformance testing. This 8 Mbps capability is a defined specification of the TCAN1044VDRQ1 and applies to its VSON-8 variant.

How does the TXD dominant timeout (DTO) function in the TCAN1044VDRQ1?

The TXD dominant timeout (DTO) in the TCAN1044VDRQ1 disables the bus driver if TXD remains low longer than 1.2–4.0 ms, preventing a single faulty node from blocking the entire CAN network. The timeout resets upon detection of a rising edge on TXD, restoring driver operation. This hardware-based safety feature is active only in normal mode and is intrinsic to the TCAN1044VDRQ1 design - independent of software or external supervision - ensuring fail-safe bus arbitration even during MCU lockup.

What package options are available for the TCAN1044VDRQ1, and which one is used in this part number?

The TCAN1044VDRQ1 is exclusively offered in the 8-pin VSON (DRB) package - 3 mm × 3 mm with exposed thermal pad - as indicated by the "DRQ1" suffix and confirmed in TI's official packaging documentation. While the broader TCAN1044-Q1 family includes SOIC-8 and SOT-8 variants, the DRQ1 suffix denotes the VSON-8 variant. This package delivers superior thermal performance (R_ΘJB = 23.9 °C/W) and AOI-friendly construction, making it the standard offering for the TCAN1044VDRQ1.