HMT1040T from GATEMODE, in a SOP-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	Transmit data input from the CAN protocol controller. TXD high drives the bus recessive; TXD low drives the bus dominant.
2	GND	power_in	Ground reference for the device. All non-differential voltages are referenced to this pin.
3	VCC	power_in	Supply voltage input, recommended 4.5 V to 5.5 V (absolute max 7 V). Powers the transceiver core and CAN bus driver.
4	RXD	output	Receive data output to the CAN protocol controller. RXD is high when the bus is recessive and low when the bus is dominant.
5	SPLIT	output	Common-mode stabilization output, nominally VCC/2 (0.3×VCC to 0.7×VCC for -500 µA < IO < 500 µA). Intended to bias the center tap of a split termination network.
6	CANL	bidirectional	Low-level CAN bus line. Differential CAN bus I/O with bus-fault protection from -50 V to +50 V.
7	CANH	bidirectional	High-level CAN bus line. Differential CAN bus I/O with bus-fault protection from -50 V to +50 V.
8	STB	input	Standby mode control input. STB low selects normal (high-speed) mode; STB high selects low-power standby with bus wake-up capability.

Key specifications

Parameter	Value
Manufacturer	GATEMODE
Package	SOP-8
Category	Comm/UART
Pins	8

Ordering variants

Same part, different packaging or reel option.

HMT1040TT

CAD (KiCad official)

Symbol: HMT1040T
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

Provenance

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

Datasheet: GATEMODE datasheet (12 pp, sha256 043fd1e2b7d5f48d, 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