component

CTM8251KAT

Public Made by Adom

by adom

VISOM CAN Bus Modules, DIP-7. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentiot-communication modulesctm8251kat
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Symbol & Footprint

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Contents

README

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CTM8251KAT

VISOM · CAN Bus Modules · DIP-7

CTM8251KAT from VISOM, in a DIP-7. 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 VCC power_in Positive power supply input. 3.3VDC nominal (3.15-3.45V range) for the CTM8251KAT variant. Typical quiescent current 46 mA; maximum operating current 130 mA. Absolute maximum -0.7V to +5V.
2 GND power_in Logic-side ground (power input return). Reference for VCC, TXD, and RXD. Galvanically isolated from the CAN-bus-side ground (CANG).
3 TXD input CAN controller transmit-data input from the host MCU/CAN controller. 3.3V-compatible logic (VIH >= 0.7·VCC, VIL <= 0.3·VCC). Drive current 2 mA typical. Dominant-timeout Tto(dom) = 0.3-12 ms (1 ms typ).
4 RXD output CAN controller receive-data output to the host MCU/CAN controller. 3.3V push-pull logic level (VOH >= VCC-0.4, VOL <= 0.4V at IRXD=4 mA). Output current up to 10 mA.
6 CANH bidirectional CAN bus high line, ISO 11898-2 differential output/input. Dominant level 2.75-4.5V (3.5V typ); recessive level 2-3V (2.5V typ). Bus pin withstand voltage ±36V DC, transient ±100V.
7 CANL bidirectional CAN bus low line, ISO 11898-2 differential output/input. Dominant level 0.5-2.25V (1.5V typ); recessive level 2-3V (2.5V typ). Bus pin withstand voltage ±36V DC, transient ±100V.
8 CANG power_out Isolated (bus-side) power supply ground reference for the CAN-bus side of the module. Optional connection point for cable shield (single-point earth) in shielded twisted-pair installations. May be left floating if unused.

Key specifications

Parameter Value
Manufacturer VISOM
Package DIP-7
Category IoT/Communication Modules
Pins 7

Ordering variants

Same part, different packaging or reel option.

  • CTM8251KAT
  • CTM8251KT

CAD (KiCad official)

  • Symbol: CTM8251KAT
  • Footprint: Package_DIP:DIP-8-N6_W7.62mm
  • 3D model: DIP-7 (KiCad packages3D, STEP)
  • 3D model files: ctm8251kat-etched.step / ctm8251kat-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ctm8251kat.step / ctm8251kat.glb are the bare package body.

Provenance

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

  • Datasheet: VISOM datasheet (5 pp, sha256 9a3b28d0dd28f73c, 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