component

TJA1042T-JSM

Public Unreviewed

by Ray

JSMSEMI CAN Transceivers, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentinterfacetja1042t-jsm
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

Symbol & Footprint

Schematic Symbol

Open full view ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

PCB Footprint

Open full view ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

Datasheet

Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.
Download PDF
Contents

README

markdown

TJA1042T-JSM

JSMSEMI · CAN Transceivers · SOP-8

TJA1042T-JSM from JSMSEMI, 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 CAN transmit data input from the protocol controller. LOW drives the bus to the dominant state; HIGH allows the bus to be recessive. Integrated pull-up to VCC; TXD dominant time-out prevents permanent bus blocking.
2 GND power_in Ground reference for the transceiver. Must be tied to board ground.
3 VCC power_in Transceiver 5 V supply voltage. Recommended operating range 4.5 V to 5.5 V; absolute max 7 V. Bypass with a local decoupling capacitor to GND.
4 RXD output CAN receive data output to the protocol controller. LOW indicates a dominant bus state, HIGH indicates recessive. Push-pull CMOS output rated ±2 mA (max ±8 mA absolute).
5 NC unconnected No Connect on the TJA1042T variant (this SOP-8 device has no VIO level-shifting supply). Leave floating or tie to GND. In the /3 variant this same pin becomes VIO.
6 CANL bidirectional Low-level CAN bus line (analog I/O). Together with CANH forms the differential CAN pair. Rated ±70 V bus fault tolerance; ±8 kV HBM / ±15 kV CDM / ±8 kV IEC 61000-4-2 contact ESD.
7 CANH bidirectional High-level CAN bus line (analog I/O). Together with CANL forms the differential CAN pair. Rated ±70 V bus fault tolerance; ±8 kV HBM / ±15 kV CDM / ±8 kV IEC 61000-4-2 contact ESD.
8 STB input Standby mode control input (active HIGH). LOW selects Normal mode with the CAN driver active; HIGH selects low-power Standby mode with bus wake-up capability. Integrated pull-up biases the device to Standby if left floating.

Key specifications

Parameter Value
Manufacturer JSMSEMI
Package SOP-8
Category Interface
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • TJA1042T-JSM
  • TJA1042TK-JSM
  • TJA1042T/3-JSM
  • TJA1042TK/3-JSM

CAD (KiCad official)

  • Symbol: TJA1042T-JSM
  • 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: JSMSEMI datasheet (21 pp, sha256 f2a20feb72d97c3a, retrieved 2026-08-17, tier: lcsc)
  • 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