component
NE555D
Public Made by Adomby adom
HTC Korea TAEJIN Tech Timers / Counters, SOP-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
markdownNE555D
HTC Korea TAEJIN Tech · Timers / Counters · SOP-8
NE555D from HTC Korea TAEJIN Tech, in a SOP-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 | GND | power_in | Supply ground reference for the device. |
| 2 | TRIGGER | input | Start timer input, active LOW; initiates timing cycle when voltage falls below 1/3 VCC. |
| 3 | OUTPUT | output | Timer logic level output providing the output signal from the timer state machine. |
| 4 | RESET | input | Timer inhibit input, active LOW; inhibits operation and clears internal flip-flop when low. |
| 5 | CONTROL VOLTAGE | input | Timing capacitor upper voltage sense input; sets the upper threshold at 2/3 VCC for the comparator. |
| 6 | THRESHOLD | input | Timing capacitor lower voltage sense input; sets the lower threshold at 1/3 VCC for the comparator. |
| 7 | DISCHARGE | output | Timing capacitor discharge output providing discharge capability for the external timing capacitor. |
| 8 | VCC | power_in | Supply voltage input from 2V to 18V per the recommended operating ratings. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HTC Korea TAEJIN Tech |
| Package | SOP-8 |
| Category | Clock/Timing |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
NE555D - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
ne555d-etched.step/ne555d-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ne555d.step/ne555d.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HTC Korea TAEJIN Tech datasheet (7 pp, sha256
2422b7f4ca25a83e, retrieved 2026-09-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).