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Texas Instruments TCAN1145DYYRQ1 — Interface & Transceivers

TCAN1145DYYRQ1 CAN Transceiver, 5 Mbps, AEC-Q100, SOT-23

MPNTCAN1145DYYRQ1
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Texas Instruments TCAN1145DYYRQ1, Automotive AEC-Q100 CAN Transceiver, Half-Duplex, 5 Mbps Data Rate, 4.5V to 28V Supply, 135 mV Receiver Hysteresis, 1/1 Drivers/Receivers, -40°C to 150°C Junction, SOT-23-14 Thin Package.

$2.9200Ref. price · indicative, final on quote
Texas Instruments TCAN1145DYYRQ1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TCAN1145DYYRQ1 specifications
ParameterValue
TypeTransceiver
SeriesAutomotive, AEC-Q100
MountingSurface Mount
Supply voltage4.5V ~ 28V
ProtocolCAN
Operating temperature-40°C~150°C(TJ)
DuplexHalf
PackageTape & Reel (TR); Cut Tape (CT)
Data rate5Mbps
CaseSOT-23-14 Thin, SOT-23 Variant
Receiver hysteresis135 mV
Number of drivers (Receivers)1/1

Product details

CAN FD-ready transceiver for automotive and industrial buses

The TCAN1145DYYRQ1: The 135 mV receiver hysteresis gives the bus interface a clean noise margin in the presence of the common-mode disturbances found on long cable runs in motor drives and vehicle chassis harnesses.

5 Mbps and CAN FD — what the data rate means for the network

Rated at 5 Mbps, the TCAN1145DYYRQ1 supports CAN FD payloads where the data phase switches to the higher bit rate. The half-duplex line is the standard CAN topology — a differential pair with dominant/recessive bus states — so any classical CAN node on the same network arbitrates correctly. No protocol changes needed at the controller side beyond enabling FD mode.

The 4.5V to 28V supply range covers the nominal 12V and 24V automotive and industrial buses, including the cold-crank dip down to 4.5V and the load-dump transient up to 28V, without needing an external pre-regulator. Junction temperature rated to 150°C means the transceiver can sit next to a hot ECU processor or on a firewall-mounted module without derating the bus interface. The SOT-23-14 Thin package (supplier device package 14-SOT-23-THIN) is a surface-mount footprint suited for automated assembly on standard FR4.

Frequently asked questions

Does TCAN1145DYYRQ1 support CAN FD?

Yes. The 5 Mbps data rate rating means it can handle the CAN FD data phase. Classical CAN arbitration runs at lower speeds (typically 500 kbps or 1 Mbps), and the transceiver switches to the higher bit rate for the FD payload. No hardware change is needed beyond enabling FD in the CAN controller.

What is the closest pin-compatible alternative to TCAN1145DYYRQ1?

The TCAN1042 is a common CAN transceiver in the same family, but it is rated for 5 Mbps classical CAN only and does not natively support the CAN FD data phase at that rate. The TCAN1145 is the CAN FD-capable evolution. Pin compatibility depends on the specific package variant — verify the footprint against the SOT-23-14 Thin land pattern before substituting.