component
LM555N
Public Made by Adomby adom
HGSEMI Timers / Counters, DIP-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
markdownLM555N
HGSEMI · Timers / Counters · DIP-8
LM555N from HGSEMI, in a DIP-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 | Ground connection, negative supply reference. |
| 2 | Trigger | input | Trigger input; triggers output HIGH on negative-going pulse reaching 1/3 VCC. |
| 3 | Output | output | Output terminal; sources or sinks up to 200 mA. |
| 4 | Reset | input | Reset input (active low); resets timer when voltage drops below 0.7 V typical threshold. |
| 5 | Control voltage | input | Control voltage input; modulates comparator threshold levels for pulse width modulation. |
| 6 | Threshold | input | Threshold input; triggers output reset when voltage reaches 2/3 VCC. |
| 7 | Discharge | output | Discharge pin; open-drain output for discharging external timing capacitor. |
| 8 | VCC | power_in | Positive supply voltage input; 4.5 to 16 V operating range. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | DIP-8 |
| Category | Clock/Timing |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM555N - Footprint:
Package_DIP:DIP-8_W7.62mm - 3D model: DIP-8 (KiCad packages3D, STEP)
- 3D model files:
lm555n-etched.step/lm555n-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm555n.step/lm555n.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (15 pp, sha256
a84f05e30ec019a5, 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).