{"schemaVersion":1,"slug":"logic-nor-gate","name":"NOR gate","kind":"symbol","abbreviation":"NOR","aliases":["NOT OR","inverted OR"],"category":"logic-signals","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"A logic gate that inverts an inclusive-OR result.","description":["A logic gate that inverts an inclusive-OR result.","On a schematic, identify the input truth convention and inverted output and trace the downstream logic and reset/permissive interface. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.","NOR is different from NAND because the underlying input combination is OR rather than AND.","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 truth convention and inverted output.","Trace the downstream logic and reset/permissive interface."],"drawingChecklist":["Label the input truth convention and inverted output.","Cross-reference the downstream logic and reset/permissive interface.","Add the selected device or circuit documentation revision, power/reference connections and project signal convention."],"distinction":"NOR is different from NAND because the underlying input combination is OR rather than AND.","facts":[{"label":"Common schematic mnemonic","value":"NOR — descriptive only; project/device documentation defines reference designations."},{"label":"Terminal / interface focus","value":"The input truth convention and inverted output"},{"label":"Artwork scope","value":"Original educational component glyph; not a certified standard graphic or package pinout."}],"references":[{"sourceId":"pub-electronics-ti-hc02","relevance":"Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored."}],"related":["logic-or-gate","plc-io"],"artwork":"electronics-gate-nor","publishedOn":"2026-10-14","updatedOn":"2026-10-14","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/logic-nor-gate","illustration":{"url":"https://eloragrid.ai/library/illustrations/logic-nor-gate.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-hc02","title":"SN74HC02 — NOR gate logic","publisher":"Texas Instruments","url":"https://www.ti.com/lit/ds/symlink/sn74hc02.pdf","type":"manufacturer","scope":"Public device-function and terminal documentation used as an example of nor gate logic. 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."}]}