TJA1044T-118-TD

TAJ1044 is part of a family of high-speed CAN transceivers. It provides an interface between a CAN protocol controller and the physical two-wire CAN bus. This transceiver is designed for high-speed CAN applications in the automotive industry, providing differential transmit and receive capability for microcontrollers (with CAN protocol controllers). The TAJ1044 offers a feature set optimized for 12V automotive applications with significant improvements and excellent EMC performance. In addition, the TAJ1044 features: ideal passive behavior on the CAN bus when the supply voltage is switched off; an ultra-low current standby mode with bus wake-up capability; excellent EMC performance even without a common-mode choke; and variants with a VIO pin for direct interfacing with microcontrollers operating at supply voltages from 3.3V to 5V. These characteristics make the TAJ1044 an excellent choice for all types of high-speed CAN nodes, including low-power mode nodes requiring wake-up via the CAN bus. The TAJ1044 implements the CAN physical layer as defined in ISO 11898-2:2016 and SAE J2284-1 through SAE J2284-5. The TAJ1044T specification supports data rates up to 1 Mbit/s. Additional timing parameters specifying loop delay symmetry are defined for other variants. This implementation supports reliable communication at data rates up to 5 Mbit/s in the CAN FD fast phase.

Key features

• Fully compliant with ISO 11898-2:2016, SAE J2284-1 to SAE J2284-5, and SAE J1939-14
• Ultra-low current standby mode with local and bus wake-up capability
• Optimized for 12V automotive system applications
• Low EME and high EMI immunity, compliant with proposed EMC standards IEC 62228-3 and SAE J2962-2
• Deep green product (halogen-free and RoHS compliant)
• Models with VIO pin allow direct interfacing with 3.3V to 5V microcontrollers. Models without VIO pin can interface with 3.3V and 5V microcontrollers, provided the microcontroller I/O is 5V tolerant
• Predictable functional behavior under all supply conditions
• Transceiver disconnects from the bus (high impedance) when supply voltage drops below the power-off undervoltage threshold
• TXD dominant timeout function
• Internal bias on TXD and STB input pins
• Ultra-low current standby mode with host and bus wake-up capability
• Models with VIO pin: CAN wake-up receiver powered by VIO, allowing VCC to be switched off
• High ESD handling capability on bus pins (8 kV IEC and HBM)
• Transient protection on bus pins in automotive environments
• Undervoltage detection on pins VCC and VIO
• Thermal protection