component
NE555PSR
Public Made by Adomby adom
Texas Instruments Timers / Counters, SOIC-8-208mil. 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
markdownNE555PSR
Texas Instruments · Timers / Counters · SOIC-8-208mil
NE555PSR from Texas Instruments, in a SOIC-8-208mil. 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. |
| 2 | TRIG | input | Timing trigger input; when TRIG falls below trigger threshold (approximately 1/3 × VCC), sets output high and opens discharge path. |
| 3 | OUT | output | High current timer output signal; can source or sink up to 200 mA with TTL compatibility. |
| 4 | RESET | input | Low-level active reset input; when low forces output low and discharge on, overriding all other inputs. |
| 5 | CONT | input | Control voltage input; internally biased to approximately 2/3 × VCC; external voltage applied here adjusts comparison thresholds; 0.01 µF bypass capacitor to ground recommended. |
| 6 | THRES | input | Threshold voltage input; when THRES exceeds approximately 2/3 × VCC (or equals CONT when externally controlled), resets output low and turns discharge on. |
| 7 | DISCH | tri_state | Open collector discharge output; when output is low provides low impedance path to ground for timing capacitor discharge. |
| 8 | VCC | power_in | Positive supply voltage input; operating range 4.5 V to 16 V (maximum 18 V for SE555 variant). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8-208mil |
| Category | Clock/Timing |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
NE555PSR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8-208mil (KiCad packages3D, STEP)
- 3D model files:
ne555psr-etched.step/ne555psr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ne555psr.step/ne555psr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (40 pp, sha256
c4ff7bccf06d28ab, retrieved 2026-09-23, 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-5(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).