CTM1051AT

@@ -0,0 +1,50 @@+# CTM1051AT++**VISOM** · CAN Bus Modules · DIP-7++CTM1051AT 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. For CTM1051AT, 3.3 V nominal (3.15 to 3.45 V). Recommend a 10 uF bulk decoupling capacitor (C1) to GND. |+| 2 | GND | power_in | Logic-side (controller-side) power ground return. Isolated from the CAN-side ground (CANG) by 2.5 kVDC. |+| 3 | TXD | input | Transmit-data input from the host CAN controller. Standard UART-level input matched to the VCC rail (3.3 V logic for CTM1051AT). VIH >= 0.7*VCC, VIL <= 0.3*VCC. Drive current typ. 2 mA. Dominant timeout Tto(dom)TXD typ. 1 ms. |+| 4 | RXD | output | Receive-data output to the host CAN controller. Standard UART-level output at VCC rail (3.3 V logic for CTM1051AT). VOH = VCC-0.2 V typ., VOL = 0.2 V typ. at IRXD = 4 mA; max output current 10 mA. |+| 6 | CANH | bidirectional | CAN bus high differential line. Dominant V(OD)CANH typ. 3.5 V, recessive V(OR)CANH typ. 2.5 V. Bus pin max withstand voltage +/-58 V, transient withstand -150/+100 V. Compliant with ISO/DIS 11898. |+| 7 | CANL | bidirectional | CAN bus low differential line. Dominant V(OD)CANL typ. 1.5 V, recessive V(OR)CANL typ. 2.5 V. Bus pin max withstand voltage +/-58 V, transient withstand -150/+100 V. Compliant with ISO/DIS 11898. |+| 8 | CANG | power_out | Isolated power-supply output ground (CAN-side reference). Provides the isolated ground for the CAN bus side; may be tied to the twisted-pair shield's inner layer for improved EMC. Leave floating if not used. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | VISOM |+| Package | DIP-7 |+| Category | IoT/Communication Modules |+| Pins | 7 |++## Ordering variants++Same part, different packaging or reel option.++- `CTM1051AT`+- `CTM1051T`++## CAD (KiCad official)++- Symbol: `CTM1051AT`+- Footprint: `Package_DIP:DIP-8-N6_W7.62mm`+- 3D model: DIP-7 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [VISOM datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588897596731088896) (5 pp, sha256 `ff38e568cdfdaf54`, 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](docs/ctm1051at-datasheet.pdf)

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