TCAN1044AVDRQ1 from Texas Instruments, in a SOIC-8. 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 local CAN controller/MCU. Integrated pull-up to V_IO (or V_CC on devices without V_IO) drives the bus to recessive if left floating.
2	GND	power_in	Device ground reference. All voltage measurements (V_CC, V_IO, bus voltages) are referenced to this pin.
3	VCC	power_in	5 V transceiver supply voltage. Recommended operating range 4.5-5.5 V (nominal 5 V). Provides power to the CAN bus driver.
4	RXD	output	CAN receive data output to the local CAN controller/MCU. Push-pull output referenced to V_IO on the AV variant; tri-stated when the device is unpowered.
5	VIO	power_in	I/O level-shifter supply voltage for the AV variant (TCAN1044AV-Q1). Operating range 1.7-5.5 V; sets the logic thresholds and RXD output level so the transceiver can interface directly with 1.8/2.5/3.3/5 V MCU I/O.
6	CANL	bidirectional	Low-level CAN bus input/output line. Connects to the CAN differential bus along with CANH; withstands ±58 V bus fault and provides ISO 11898-2:2016 compliant physical layer signaling.
7	CANH	bidirectional	High-level CAN bus input/output line. Connects to the CAN differential bus along with CANL; withstands ±58 V bus fault and provides ISO 11898-2:2016 compliant physical layer signaling.
8	STB	input	Standby mode control input. Logic high places the transceiver into low-power standby with remote wake (WUP) detection per ISO 11898-2:2016; logic low selects normal mode. Integrated pull-up defaults the device to standby if the pin is left floating.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-8
Category	Comm/UART
Pins	8

Ordering variants

Same part, different packaging or reel option.

TCAN1044AVDRQ1
TCAN1044AVDRQ1D
TCAN1044AVDRQ1DRB
TCAN1044AVDRQ1DDF

CAD (KiCad official)

Symbol: TCAN1044AVDRQ1
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tcan1044avdrq1.step`	122 KB	You want the bare part, or you mark your own boards.
`tcan1044avdrq1-etched.step`	2.2 MB	You want the part with `TCAN1044AVDRQ1` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 578 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Texas Instruments datasheet (41 pp, sha256 556a4b8df4de4965, 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).

Datasheet PDF