component
TLC555QDR
Public Made by Adomby adom
Texas Instruments Timers / Counters, SOIC-8. Pinout cross-checked by two models against the datasheet, 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
markdownTLC555QDR
Texas Instruments · Timers / Counters · SOIC-8
TLC555QDR from Texas Instruments, in a SOIC-8. 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 | GND | power_in | Ground connection. |
| 2 | TRIG | input | Timing input start; when TRIG < 1/2 CONT, output goes high and discharge is open circuit. |
| 3 | OUT | output | High current timer output signal. |
| 4 | RESET | input | Active low reset input forces output and discharge to low level. |
| 5 | CONT | input | Control comparator threshold input; outputs 2/3 VDD when open circuit and allows bypass capacitor connection. |
| 6 | THRES | input | Timing input end; when THRES > CONT, output and discharge go to low level. |
| 7 | DISCH | output | Open collector discharge output that can discharge the timing capacitor. |
| 8 | VDD | power_in | Power supply voltage; 5 V to 15 V operating range for TLC555Q. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Clock/Timing |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
TLC555QDR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
tlc555qdr-etched.step/tlc555qdr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tlc555qdr.step/tlc555qdr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (49 pp, sha256
3e8bc6d70bce3f3f, retrieved 2026-09-26, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).