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tja1040m
Public Unreviewedby Ray
HGSEMI CAN ICs, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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markdownTJA1040M
HGSEMI · CAN ICs · SOP-8
TJA1040M from HGSEMI, 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 controller. Internally pulled up to VCC so the pin defaults to recessive when unused. TTL/CMOS logic input (VIH min 2 V, VIL max 0.8 V). |
| 2 | GND | power_in | Device ground reference (0 V) for all internal circuitry and the CAN bus signals. |
| 3 | VCC | power_in | Supply voltage input. Operating range 4.75 V to 5.25 V (absolute max 6 V). Typical ICC 5 mA (recessive), 50 mA (dominant), 10 µA in standby mode. |
| 4 | RXD | output | Receive data output to the CAN controller; reports bus state read from CANH/CANL (low = dominant, high = recessive). Push-pull output; sinks up to ~6 mA typ / 20 mA max at VOL = 0.4 V. |
| 5 | SPLIT | output | Common-mode stabilization output (split-termination reference). Sources 0.5·VCC (typ) in normal mode with ±500 µA drive to stabilize the recessive common-mode voltage of a split termination network; floats (high-Z) in standby mode. |
| 6 | CANL | bidirectional | Low-level CAN bus line. Differential half of the CAN physical layer; dominant output ~1.4 V typ, recessive ~0.5·VCC. Withstands −27 V to +40 V DC and ±200 V ISO 7637 transients; short-circuit protected to VCC. |
| 7 | CANH | bidirectional | High-level CAN bus line. Differential half of the CAN physical layer; dominant output ~3.6 V typ, recessive ~0.5·VCC. Withstands −27 V to +40 V DC and ±200 V ISO 7637 transients; short-circuit protected to GND. |
| 8 | STB | input | Standby mode control input. Low = normal (transmit/receive active); High = standby (transmitter off, low-power receiver monitors bus for wake-up). Internally pulled up to VCC so the device defaults to standby if left unconnected. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | SOP-8 |
| Category | Comm/UART |
| Pins | 8 |
Ordering variants
TJA1040MM/TRTJA1040MMM/TR
CAD (KiCad official)
- Symbol:
TJA1040M - 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: HGSEMI datasheet (None pp, sha256
8eec850bf5cf11ff, 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).