component
HT7555CRZ
Public Made by Adomby adom
HTCSEMI 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
markdownHT7555CRZ
HTCSEMI · Timers / Counters · SOP-8
HT7555CRZ from HTCSEMI, 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 | Ground reference for device operation. |
| 2 | TRIGGER | input | Negative-going input that initiates timing cycle when pulled below approximately 1/3 VDD threshold. |
| 3 | OUTPUT | output | Rail-to-rail CMOS output capable of sourcing or sinking up to 100 mA; high during timing, low at completion. |
| 4 | RESET | input | Active-low reset input that clears the internal flip-flop when pulled below 0.4V to 0.7V threshold. |
| 5 | CONTROL VOLTAGE | input | Controls threshold and trigger voltage levels; typically bypassed with capacitor for noise filtering. |
| 6 | THRESHOLD | input | Positive-going input that resets flip-flop and drives output low when exceeds approximately 2/3 VDD. |
| 7 | DISCHARGE | tri_state | Open-drain output that actively discharges the external timing capacitor to ground during output low state. |
| 8 | VDD | power_in | Positive supply voltage; device operates from 2V to 18V with low supply current. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HTCSEMI |
| Package | SOP-8 |
| Category | Clock/Timing |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
HT7555CRZ - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
ht7555crz-etched.step/ht7555crz-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ht7555crz.step/ht7555crz.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HTCSEMI datasheet (9 pp, sha256
13ab177de959c427, retrieved 2026-09-22, 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).