TCAN1043ADMTRQ1

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Full model: TCAN1043ADMTRQ1

Manufacturer: Texas Instruments

Device type: automotive-grade CAN FD transceiver

Package: SOIC-8 (weldable heat sink)

Operating voltage: 4.5V ~ 5.5V (compatible with 12V automotive systems)

Operating temperature: -40°C ~ +125°C (compliant with AEC-Q100 Grade 1)

Bus withstand voltage: ±58V (short-circuit protection)

Communication rate: 5Mbps (CAN FD) / 1Mbps (classic CAN)

Quiescent current: 1.5mA (standby mode)

Bus impedance matching: 60Ω (integrated termination resistor option)

Common mode voltage range: ±30V (anti-electromagnetic interference)

Propagation delay: 150ns (typical, CAN FD mode)

ESD protection: ±15kV (HBM, bus pins)

Description

The TCAN1043A-Q1 is a high-speed Controller Area Network (CAN) transceiver that meets the physical layer requirements of the ISO 11898-2:2016 highspeed CAN specification. The device supports both classical CAN and CAN FD data rates up to 8 megabits per second (Mbps) (TCAN1043A-Q1) or 5 Mbps (TCAN1043AT-Q1). The TCAN1043A-Q1 allows for system-level reductions in battery current consumption by selectively enabling the various power supplies that may be present on a system via the INH output pin. This allows a low-current sleep state in which power is gated to all system components except for the TCAN1043A-Q1, while monitoring the CAN bus. When a wake-up event is detected, the TCAN1043AQ1 initiates system start-up by driving INH high. The TCAN1043A-Q1 features an SWE timer that enables a safe transition to Sleep mode after 4 minutes (tINACTIVE) of inactivity in Standby mode. This makes sure the device is transitioned to low-power Sleep mode if the MCU fails to transition the device to Normal mode.

Features

   1. AEC Q100 (Grade 1) Qualified for automotive applications

   2. Functional Safety-Capable

       – Documentation available to aid in functional safety system design

   3. Meets the requirements of ISO 11898-2:2016

   4. Wide input operational voltage range

   5. Supports classic CAN and CAN FD up to 8 Mbps (TCAN1043A-Q1) or 5 Mbps (TCAN1043AT-Q1)

   6. VIO level shifting supports: 1.7 V to 5.5 V

   7. Operating modes:

       – Normal mode

       – Silent mode

       – Standby mode

       – Low-power sleep mode

   8. High-voltage INH output for system power control

   9. Local wake-up support via the WAKE pin

 10. Sleep Wake Error (SWE) timer enables safe transition from standby mode to sleep mode in the event of a system power failure or software fault

       – Allows for extended power-up time

 11. Defined behavior when unpowered

       – Bus and IO terminals are high impedance (no load to operating bus or application)

 12. Protection features:

       – ±58-V CAN bus fault tolerant

       – Load dump support on VSUP

       – IEC ESD protection

       – Under-voltage protection

       – Thermal shutdown protection

       – TXD dominant state timeout (TXD DTO)

Applications

   1. Body electronics and lighting

   2. Automotive gateway

   3. Advanced driver assistance systems (ADAS)

   4. Infotainment and cluster

   5. Hybrid, electric & powertrain systems

   6. Personal transport vehicles - electric bike

   7. Industrial transportation

Pin definition (SOIC-8 package)

Typical application circuit

   1. Automotive ECU node connection

          TCAN1043ADMTRQ1 ──── CAN bus

               TXD       ──── MCU's CAN controller (such as STM32F4's CAN_TX)

               RXD       ──── MCU's CAN_RX

               CANH    ──── Bus 120Ω terminal resistor ──── CAN_H

               CANL     ──── Bus 120Ω terminal resistor ──── CAN_L

   2. PCB layout key points:

       - Bus routing: CANH/CANL need to be routed in parallel with equal length (spacing ≥ 0.3mm), and avoid right-angle turns.

       - Decoupling capacitor: The VCC pin needs to be connected in parallel with a 100nF ceramic capacitor (close to the chip).

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