# CD4516BE

**Texas Instruments** · Counters / Dividers · PDIP-16

CD4516BE from Texas Instruments, in a PDIP-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 | PRESET ENABLE | input | A high level on this line presets the counter to the number present on the jam inputs P1-P4. |
| 2 | Q4 | output | Buffered Q4 counter output, the fourth flip-flop output. |
| 3 | P4 | input | Jam (preset) input 4, loaded into the counter when PRESET ENABLE is high. |
| 4 | P1 | input | Jam (preset) input 1, loaded into the counter when PRESET ENABLE is high. |
| 5 | CARRY IN | input | Active-low carry input; when held low the counter advances up or down on each positive-going clock transition. |
| 6 | Q1 | output | Buffered Q1 counter output, the first flip-flop output. |
| 7 | CARRY OUT | output | Active-low carry output, connected to CARRY IN of the next more significant stage for synchronous cascading or to the clock for ripple cascading. |
| 8 | VSS | power_in | Ground (negative supply) terminal; the supply voltage range is referenced to it. |
| 9 | RESET | input | A high level on this line clears the counter. |
| 10 | UP/DOWN | input | Count direction control input for up or down counting. |
| 11 | Q2 | output | Buffered Q2 counter output, the second flip-flop output. |
| 12 | P2 | input | Jam (preset) input 2, loaded into the counter when PRESET ENABLE is high. |
| 13 | P3 | input | Jam (preset) input 3, loaded into the counter when PRESET ENABLE is high. |
| 14 | Q3 | output | Buffered Q3 counter output, the third flip-flop output. |
| 15 | CLOCK | input | Clock input; the counter advances on the positive-going clock transition. |
| 16 | VDD | power_in | Positive supply terminal; recommended range 3 V to 18 V, absolute maximum -0.5 V to +20 V referenced to VSS. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `CD4516BE`
- Footprint: `Package_DIP:DIP-16_W7.62mm`
- 3D model: PDIP-16 (KiCad packages3D, STEP)
- 3D model files: `cd4516be-etched.step` / `cd4516be-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cd4516be.step` / `cd4516be.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/lit/ds/symlink/cd4510b.pdf) (20 pp, sha256 `fc185675c565180b`, retrieved 2026-10-30, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/cd4516be-datasheet.pdf)