component
RE46C100S8F
Public Unreviewedby Ray
Microchip Tech Buffers, Drivers, Receivers, Transceivers, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownRE46C100S8F
Microchip Tech · Buffers, Drivers, Receivers, Transceivers · SOIC-8
RE46C100S8F from Microchip Tech, in a SOIC-8. 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 | NC | unconnected | No connection. Leave floating or tie to a static rail per board policy. |
| 2 | VDD | power_in | Positive supply voltage input. Operating range 6 V to 16 V (typ 9 V, absolute max 18 V). Quiescent current <100 nA with HRNEN=0 V and FEED=0 V. Bypass with a ~1 µF capacitor placed close to the device to minimize horn switching noise. |
| 3 | NC | unconnected | No connection. Leave floating or tie to a static rail per board policy. |
| 4 | FEED | input | Feedback input. In self-oscillating mode, connect to the feedback electrode of the piezoelectric horn through a current-limiting resistor (typ 1.5 MΩ). In two-terminal direct-drive mode, drive as the external signal input. If unused, tie to VDD or VSS. Absolute input range −10 V to +22 V; leakage ≤50 µA at FEED=22 V, ≤−50 µA at FEED=−10 V. |
| 5 | VSS | power_in | Negative supply / ground reference. Connect to system ground. |
| 6 | HORNB | output | Push-pull horn driver output B. Connects to the metal electrode of the piezoelectric transducer. Complementary to HORNS. Driver R_ON ≈ 20 Ω typ at 9 V; V_OL ≤ 0.5 V at I_OL=16 mA, V_OH ≥ 8.5 V at I_OH=−16 mA (VDD=9 V). |
| 7 | HORNS | output | Push-pull horn driver output S (complementary to HORNB). Connects to the ceramic electrode of the piezoelectric transducer. Driver R_ON ≈ 20 Ω typ at 9 V; V_OL ≤ 0.5 V at I_OL=16 mA, V_OH ≥ 8.5 V at I_OH=−16 mA (VDD=9 V). |
| 8 | HRNEN | input | Horn enable input, active high. Drive to logic high (V_IH ≥ 2.3 V) to enable the horn output; drive low (V_IL ≤ 1 V) to silence. The horn output can be modulated via this pin. Input leakage ≤100 nA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-8 |
| Category | Logic |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
RE46C100S8FRE46C100S8FPRE46C100S8FMS
CAD (KiCad official)
- Symbol:
RE46C100S8F - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (18 pp, sha256
be84fab1278d9285, retrieved 2026-08-17, tier: lcsc) - 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).