# CTM1051MG

**ZLG Zhiyuan Elec** · CAN Bus Modules · DIP-7

CTM1051MG from ZLG Zhiyuan Elec, 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 | RXD | output | CAN receive data output to the MCU. Logic high VOH >= VCC-0.4 V at IRXD = -1.5 mA; logic low VOL <= 0.4 V at IRXD = 1.5 mA. Maximum output current 10 mA. |
| 2 | TXD | input | CAN transmit data input from the MCU. Logic high VIH >= 0.7*VCC, logic low VIL <= 0.3*VCC. Internal ~10 kΩ pull-up to VCC; drive strength IT >= 2 mA. Dominant timeout tto(dom)TXD = 0.3 to 3.8 ms. |
| 3 | GND | power_in | Input-side power ground, referenced to the MCU/logic domain. Isolated from CANG by 2500 VDC. |
| 4 | VCC | power_in | Input-side power supply, +5 V nominal (4.75 to 5.25 VDC). Quiescent current ~9 mA typical, max operating current 90 mA. |
| 5 | CANG | power_out | Isolated output-side ground reference for the CAN bus. Typically left floating in simple applications; connected via shield/GDT/earth in surge-protected designs. |
| 6 | CANL | bidirectional | CAN bus low signal (ISO 11898-2 compliant). Dominant V(OD)CANL ~1.5 V, recessive ~2.5 V (no load). Bus pin max withstand -40 to +40 V; leakage +/-5 uA at VCC=0. |
| 7 | CANH | bidirectional | CAN bus high signal (ISO 11898-2 compliant). Dominant V(OD)CANH ~3.5 V, recessive ~2.5 V (no load). Differential dominant Vdiff(d) ~2 V into 60 Ω. Bus pin max withstand -40 to +40 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ZLG Zhiyuan Elec |
| Package | DIP-7 |
| Category | IoT/Communication Modules |
| Pins | 7 |

## Ordering variants

Same part, different packaging or reel option.

- `CTM1051MG`
- `CTM1051AMG`

## CAD (KiCad official)

- Symbol: `CTM1051MG`
- Footprint: `Package_DIP:DIP-8-N6_W7.62mm`
- 3D model: DIP-7 (KiCad packages3D, STEP)
- 3D model files: `ctm1051mg-etched.step` / `ctm1051mg-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ctm1051mg.step` / `ctm1051mg.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ZLG Zhiyuan Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588947688716558336) (6 pp, sha256 `cc48129ccb226cd8`, 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/ctm1051mg-datasheet.pdf)