{"schemaVersion":1,"slug":"schmitt-trigger-inverter","name":"Schmitt-trigger inverter","kind":"symbol","abbreviation":"SCHMITT-NOT","aliases":["hysteresis inverter","Schmitt NOT"],"category":"logic-signals","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"A digital inverter with hysteresis between its input switching thresholds.","description":["A digital inverter with hysteresis between its input switching thresholds.","On a schematic, identify the input waveform, threshold convention and supply domain and trace the cleaned/inverted digital signal. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.","Input hysteresis and logical inversion are separate properties; neither makes an arbitrary slow input safe for every logic family.","Terminal letters describe electrical roles, not package pin numbers. Check the selected public datasheet for the actual pin assignment, polarity and any internally connected terminals before completing the drawing."],"readingNotes":["Identify the input waveform, threshold convention and supply domain.","Trace the cleaned/inverted digital signal."],"drawingChecklist":["Label the input waveform, threshold convention and supply domain.","Cross-reference the cleaned/inverted digital signal.","Add the selected device or circuit documentation revision, power/reference connections and project signal convention."],"distinction":"Input hysteresis and logical inversion are separate properties; neither makes an arbitrary slow input safe for every logic family.","facts":[{"label":"Common schematic mnemonic","value":"SCHMITT-NOT — descriptive only; project/device documentation defines reference designations."},{"label":"Terminal / interface focus","value":"The input waveform, threshold convention and supply domain"},{"label":"Artwork scope","value":"Original educational component glyph; not a certified standard graphic or package pinout."}],"references":[{"sourceId":"pub-electronics-ti-hc14","relevance":"Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored."}],"related":["schmitt-trigger-buffer","plc-io"],"artwork":"electronics-gate-schmitt-not","publishedOn":"2026-10-14","updatedOn":"2026-10-14","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/schmitt-trigger-inverter","illustration":{"url":"https://eloragrid.ai/library/illustrations/schmitt-trigger-inverter.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pub-electronics-ti-hc14","title":"SN74HC14 — Schmitt-trigger inverters","publisher":"Texas Instruments","url":"https://www.ti.com/lit/ds/symlink/sn74hc14.pdf","type":"manufacturer","scope":"Public device-function and terminal documentation used as an example of schmitt-trigger inverters. Example part numbers are manufacturer identifiers, not IEC/IEEE symbol IDs. Device ratings, pin numbering and availability remain in the selected product documentation.","checkedOn":"2026-10-14","reuse":"link-only","relevance":"Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored."}]}