component
TCAN1145DRQ1
Public Unreviewedby Ray
Texas Instruments CAN ICs, SOIC-14. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTCAN1145DRQ1
Texas Instruments · CAN ICs · SOIC-14
TCAN1145DRQ1 from Texas Instruments, in a SOIC-14. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | TXD | input | CAN transmit data input from the MCU. Low drives a dominant bus state; high (or floating with internal pull-up) leaves the bus recessive. |
| 2 | GND | power_in | Ground return. The exposed thermal pad on the DMT (VSON) variant must also be soldered to GND. |
| 3 | VCC | power_in | 5V supply for the CAN bus transceiver core. Nominal 4.5V-5.5V per recommended operating conditions. |
| 4 | RXD | output | CAN receive data output to the MCU. Tri-state; low = dominant bus, high = recessive bus. |
| 5 | VIO | power_in | Digital I/O rail for level shifting to the MCU. Supports 1.8V-5V to match the host processor's I/O voltage. |
| 6 | nINT/SDO | output | Muxed digital output. Acts as SPI serial-data-out (SDO) while nCS is low; becomes the active-low interrupt (nINT) output when nCS is high. |
| 7 | INH/LIMP | output | High-voltage inhibit output used to enable/disable the system voltage regulator and power rails. On TCAN1144-Q1 and TCAN1146-Q1 this pin can be configured as a limp-home output; on TCAN1145-Q1 it functions as INH only. |
| 8 | SCLK | input | SPI serial clock input from the MCU. Clocks SDI in and SDO out on the appropriate edges. |
| 9 | WAKE | input | High-voltage local wake-up input. Edge on this pin wakes the device from sleep. Absolute voltage range −18V to +42V. |
| 10 | VSUP | power_in | High-voltage battery supply input. Feeds the INH and wake circuitry directly from the vehicle battery rail. |
| 11 | SDI | input | SPI serial data input from the MCU. Sampled on SCLK edges while nCS is asserted low. |
| 12 | CANL | bidirectional | Low-side CAN bus I/O. Driven low in the dominant state and biased to VCC/2 in the recessive state. ±58V bus fault protection. |
| 13 | CANH | bidirectional | High-side CAN bus I/O. Driven high in the dominant state and biased to VCC/2 in the recessive state. ±58V bus fault protection. |
| 14 | nCS | input | Active-low SPI chip-select input from the MCU. Enables SPI transactions and selects the nINT/SDO pin function. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Comm/UART |
| Pins | 14 |
Ordering variants
Same part, different packaging or reel option.
TCAN1145DRQ1DTCAN1145DRQ1TCAN1145DRQ1DMTTCAN1145DRQ1DYY
CAD (KiCad official)
- Symbol:
TCAN1145DRQ1 - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOIC-14 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (116 pp, sha256
276a9067cc1d77a4, retrieved 2026-08-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).