MC14040BDR2G

@@ -0,0 +1,58 @@+# MC14040BDR2G++**onsemi** · Counters / Dividers · SOIC-16++MC14040BDR2G from onsemi, in a SOIC-16. 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 | Q12 | output | Counter output stage 12 (MSB, divide-by-4096). CMOS push-pull output, high in reset-cleared state means low. |+| 2 | Q6 | output | Counter output stage 6 (divide-by-64). CMOS push-pull output. |+| 3 | Q5 | output | Counter output stage 5 (divide-by-32). CMOS push-pull output. |+| 4 | Q7 | output | Counter output stage 7 (divide-by-128). CMOS push-pull output. |+| 5 | Q4 | output | Counter output stage 4 (divide-by-16). CMOS push-pull output. |+| 6 | Q3 | output | Counter output stage 3 (divide-by-8). CMOS push-pull output. |+| 7 | Q2 | output | Counter output stage 2 (divide-by-4). CMOS push-pull output. |+| 8 | VSS | power_in | Negative supply / ground reference. Typically 0 V. |+| 9 | Q1 | output | Counter output stage 1 (LSB, divide-by-2). CMOS push-pull output. |+| 10 | C | input | Clock input. Counter advances on the negative-going edge of the clock. Schmitt-shaped input with diode protection; VIH >= 0.7*VDD, VIL <= 0.3*VDD. |+| 11 | R | input | Asynchronous reset input, active high. A high level forces all Q outputs low regardless of the clock; must be held low for normal counting. |+| 12 | Q9 | output | Counter output stage 9 (divide-by-512). CMOS push-pull output. |+| 13 | Q8 | output | Counter output stage 8 (divide-by-256). CMOS push-pull output. |+| 14 | Q10 | output | Counter output stage 10 (divide-by-1024). CMOS push-pull output. |+| 15 | Q11 | output | Counter output stage 11 (divide-by-2048). CMOS push-pull output. |+| 16 | VDD | power_in | Positive supply voltage. Operating range 3.0 V to 18 V; absolute maximum -0.5 V to +18.0 V referenced to VSS. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | onsemi |+| Package | SOIC-16 |+| Category | Logic |+| Pins | 16 |++## Ordering variants++- `MC14040BDR2GDG`+- `MC14040BDR2GDR2G`+- `MC14040BDR2GDTR2G`+- `MC14040BDR2GFELG`++## CAD (KiCad official)++- Symbol: `MC14040BDR2G`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SOIC-16 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [onsemi datasheet](https://www.onsemi.com/pdf/datasheet/mc14040b-d.pdf) (8 pp, sha256 `b8b18b3a9e3cff9e`, retrieved 2026-08-17, tier: manufacturer)+- **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/mc14040bdr2g-datasheet.pdf)

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