3.3 V CAN transceiver — supply and signal-level fit
The TCAN330D is a single-channel CAN transceiver from Texas Instruments designed to interface a CAN protocol controller with the physical differential bus. The transceiver supports standard CAN data rates up to 1 Mbps, covering high-speed in-vehicle networks, industrial fieldbus, and building automation backbones.
Temperature range and package — where it goes
For a BOM line, this means standard distribution availability and no forced redesign window.
5 V microcontroller compatibility — the level-shift question
Driving TXD from a 5 V logic output exceeds the absolute maximum rating for the digital input — the part is not 5 V tolerant on the controller interface. If the MCU runs at 5 V, a level translator or a resistive divider on TXD is needed. The bus pins (CANH, CANL) are differential and tolerate common-mode voltages well beyond the supply, but the digital side strictly follows VCC.
Bus length at 1 Mbps
At 1 Mbps, the practical bus length for a CAN network is limited by the round-trip propagation delay and the bit timing budget. With the TCAN330D's propagation delay typical in the tens of nanoseconds, the dominant constraint is the cable medium. For a single-drop at 1 Mbps, 40 meters is a common rule-of-thumb; longer runs require reducing the data rate or using a repeater. The transceiver itself does not impose a hard length — the system timing closure does.