The NXP TJA1044VTK/3Z is a half-duplex CAN transceiver designed for automotive and industrial high-speed CAN networks. It interfaces a CAN protocol controller (typically an MCU with built-in CAN) to the physical two-wire CAN bus, handling the differential signaling, bus fault protection, and wake-up detection. The part supports data rates up to 5 Mbps, covering both classical CAN (up to 1 Mbps) and CAN FD (flexible data rate) frames.
The 5 Mbps data rate is the headline performance spec: it tells you this transceiver can handle CAN FD frames with the faster data phase, not just classical CAN at 500 kbps or 1 Mbps. If your design uses CAN FD for firmware updates or high-throughput sensor data, this part supports it. The 300 mV receiver hysteresis provides noise immunity on the bus — it prevents the receiver from toggling on small signal fluctuations, which is important in electrically noisy environments like an engine bay or factory floor. The supply voltage range of 4.75V to 5.25V means it runs from a standard 5V rail; do not try to power it from 3.3V without a regulator.
Package and footprint notes
The TJA1044VTK/3Z comes in an 8-VDFN exposed pad package (supplier device package 8-HVSON, 3x3 mm). The surface-mount footprint is compact, suited for space-constrained ECU or sensor node PCBs.
Lifecycle and sourcing posture
It is ROHS3 compliant.