# RE46C104S14F

**Microchip Tech** · Buffers / Drivers · SOIC-14

RE46C104S14F from Microchip Tech, in a SOIC-14. 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 | N/C | unconnected | No internal connection. |
| 2 | FEED | input | Feedback control input for a self-oscillating piezoelectric horn (also usable for direct drive), with an input voltage range of -10V to +22V. |
| 3 | CAP- | passive | Charge pump flying capacitor negative terminal, connected to C1 (10uF in the typical application). |
| 4 | VSS | power_in | Ground / negative supply, 0V reference. |
| 5 | CAP+ | passive | Charge pump flying capacitor positive terminal, connected to C1 (10uF in the typical application). |
| 6 | HRNEN | input | Active-high piezo horn enable input, with a logic low of 1.0V max and a logic high of 2.3V min. |
| 7 | N/C | unconnected | No internal connection. |
| 8 | N/C | unconnected | No internal connection. |
| 9 | VPOS | power_out | Charge pump voltage output (typically 8.9V at -16mA, swinging up to 2 x Vdd) that supplies the horn drivers, with a 10uF capacitor C2 and 30mA max continuous output current. |
| 10 | HORNB | output | Horn driver output, swinging from Vss to Vpos, with 30mA max continuous output current. |
| 11 | HORNS | output | Horn driver output, swinging from Vss to Vpos, with 30mA max continuous output current. |
| 12 | CPMPEN | input | Active-high charge pump enable input, which minimizes supply current when low, with a logic low of 1.0V max and a logic high of 2.3V min. |
| 13 | VDD | power_in | Positive supply, operating range 4.0V to 8.0V (absolute maximum -0.5V to +9.0V). |
| 14 | N/C | unconnected | No internal connection. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-14 |
| Category | Logic ICs |
| Pins | 14 |

## CAD (KiCad official)

- Symbol: `RE46C104S14F`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `re46c104s14f-etched.step` / `re46c104s14f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `re46c104s14f.step` / `re46c104s14f.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](docs/re46c104s14f-datasheet.pdf) (5 pp, sha256 `0d0994ef7ca23ab8`, retrieved 2026-10-28, tier: manufacturer)
- **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/re46c104s14f-datasheet.pdf)