TCAN1042HVDRQ1 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 protocol controller. LOW drives a dominant bus state, HIGH allows a recessive bus state. Referenced to V_IO logic levels (0.7V_IO High / 0.3V_IO Low). Includes a driver dominant time-out that recovers the bus if TXD is stuck low.
2	GND	power_in	Ground reference for the transceiver. All voltages in the datasheet are referenced to this terminal.
3	VCC	power_in	Transceiver 5 V supply voltage. Recommended operating range 4.5 V to 5.5 V. Supplies the CAN bus driver and internal analog circuitry; requires local bypass capacitance.
4	RXD	output	CAN receive data output to the local protocol controller. LOW indicates a dominant bus state, HIGH indicates a recessive bus state. Output high level is referenced to V_IO on 'V' suffix devices. Drive capability ±2 mA (absolute max ±8 mA).
5	VIO	power_in	I/O level-shifting supply voltage (3 V to 5.5 V) used to match the logic-side supply of the host MCU. Sets the TXD/STB input thresholds and the RXD output high level. Required only on 'V' suffix devices; supports undervoltage-protected mode (UV_VIO ≈ 1.3-2.75 V).
6	CANL	bidirectional	Low-side CAN bus I/O line. Differential bus terminal paired with CANH. Fault-protected to ±70 V on the 'H' variants, common-mode input range ±30 V. Tolerates up to ±70 V differential (V_DIFF).
7	CANH	bidirectional	High-side CAN bus I/O line. Differential bus terminal paired with CANL. Fault-protected to ±70 V on the 'H' variants, common-mode input range ±30 V.
8	STB	input	Standby mode control input (active high). Drive LOW for normal operation; drive HIGH to enter low-power standby with remote wake-up (WUP) monitoring. Referenced to V_IO logic levels on 'V' suffix devices.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-8
Category	Interface
Pins	8

Ordering variants

Same part, different packaging or reel option.

TCAN1042HVDRQ1D
TCAN1042HVDRQ1
TCAN1042HVDRQ1DRB

CAD (KiCad official)

Symbol: TCAN1042HVDRQ1
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (43 pp, sha256 b419d90f0d678231, retrieved 2026-08-17, tier: manufacturer)
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