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 >= 0.7VDD, VIL <= 0.3VDD.
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

Same part, different packaging or reel option.

MC14040BDR2GDG
MC14040BDR2G
MC14040BDR2GDTR2G
MC14040BDR2GFELG

CAD (KiCad official)

Symbol: MC14040BDR2G
Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
3D model: SOIC-16 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`mc14040bdr2g.step`	217 KB	You want the bare part, or you mark your own boards.
`mc14040bdr2g-etched.step`	2.9 MB	You want the part with `MC14040BDR2G` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 731 faces against 267 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: onsemi datasheet (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