# CD4020BE

**Texas Instruments** · Counters, Dividers · DIP-16

CD4020BE from Texas Instruments, in a DIP-16. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Q12 | output | Buffered counter stage 12 output. |
| 2 | Q13 | output | Buffered counter stage 13 output. |
| 3 | Q14 | output | Buffered counter stage 14 output, the last stage of the 14-stage ripple counter. |
| 4 | Q6 | output | Buffered counter stage 6 output. |
| 5 | Q5 | output | Buffered counter stage 5 output. |
| 6 | Q7 | output | Buffered counter stage 7 output. |
| 7 | Q4 | output | Buffered counter stage 4 output. |
| 8 | VSS | power_in | Ground/negative supply; all voltages are referenced to VSS. |
| 9 | Q1 | output | Buffered counter stage 1 output. |
| 10 | φ (INPUT PULSES) | input | Schmitt-trigger clock input; the counter advances one count on the negative transition of each input pulse, with unlimited rise and fall times allowed. |
| 11 | RESET | input | Asynchronous reset; a high level resets the counter to its all-zeros state. |
| 12 | Q9 | output | Buffered counter stage 9 output. |
| 13 | Q8 | output | Buffered counter stage 8 output. |
| 14 | Q10 | output | Buffered counter stage 10 output. |
| 15 | Q11 | output | Buffered counter stage 11 output. |
| 16 | VDD | power_in | Positive supply; recommended 3 V to 18 V, absolute maximum -0.5 V to +20 V referenced to VSS. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | DIP-16 |
| Category | Logic |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `CD4020BE`
- Footprint: `Package_DIP:DIP-16_W7.62mm`
- 3D model: DIP-16 (KiCad packages3D, STEP)
- 3D model files: `cd4020be-etched.step` / `cd4020be-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cd4020be.step` / `cd4020be.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/cd4020b) (30 pp, sha256 `7317dfacb7c3e8db`, retrieved 2026-10-05, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/cd4020be-datasheet.pdf)