CD4001B Quad NOR Gate

@@ -0,0 +1,73 @@+# CD4001B++**Texas Instruments** · Logic Gate · SOIC-14++The CD4001B contains four independent 2-input NOR gates in the 4000B CMOS family; each output is high only when both inputs are low. It runs from 3 V to 18 V.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | A | input | Gate 1 input A (J = A NOR B). CMOS input, high impedance, protected by input protection network. VIH min 3.5 V @ VDD=5 V. |+| 2 | B | input | Gate 1 input B (J = A NOR B). CMOS input, high impedance, protected by input protection network. |+| 3 | J | output | Gate 1 output: J = A NOR B. Buffered CMOS output; IOH ≈ −1 mA / IOL ≈ 1 mA min @ VDD=10 V. |+| 4 | K | output | Gate 2 output: K = C NOR D. Buffered CMOS output. |+| 5 | C | input | Gate 2 input C (K = C NOR D). CMOS input, high impedance. |+| 6 | D | input | Gate 2 input D (K = C NOR D). CMOS input, high impedance. |+| 7 | VSS | power_in | Negative supply / ground reference. Typically 0 V. All input/output voltages referenced to VSS. |+| 8 | E | input | Gate 3 input E (L = E NOR F). CMOS input, high impedance. |+| 9 | F | input | Gate 3 input F (L = E NOR F). CMOS input, high impedance. |+| 10 | L | output | Gate 3 output: L = E NOR F. Buffered CMOS output. |+| 11 | M | output | Gate 4 output: M = G NOR H. Buffered CMOS output. |+| 12 | G | input | Gate 4 input G (M = G NOR H). CMOS input, high impedance. |+| 13 | H | input | Gate 4 input H (M = G NOR H). CMOS input, high impedance. |+| 14 | VDD | power_in | Positive supply voltage. Recommended 3 V to 18 V (absolute max −0.5 V to +20 V referenced to VSS). Bypass with 0.1 µF ceramic to VSS. |++## Key specifications++| Parameter | Value |+|---|---|+| Type | Quad NOR Gate |+| Logic family | 4000B (CMOS) |+| Supply voltage | 3 V to 18 V |+| Propagation delay | 45 ns typ at 10 V |+| Operating temperature | -55 C to 125 C |++## Ordering variants++- `CD4001BE`+- `CD4001BE.A`+- `CD4001BEE4`+- `CD4001BF`+- `CD4001BF.A`+- `CD4001BF3A`+- `CD4001BF3A.A`+- `CD4001BM`+- `CD4001BM.A`+- `CD4001BM96`+- `CD4001BM96.A`+- `CD4001BM96E4`+- `CD4001BM96G4`+- `CD4001BMT`+- `CD4001BNSR`+- `CD4001BNSRG4`+- `CD4001BPW`+- `CD4001BPWR`+- `CD4001BPWR.A`+- `CD4001BPWRG4`++## CAD (KiCad official)++- Symbol: `cd4001.kicad_sym`+- Footprint: `cd4001.kicad_mod`+- 3D model: SOIC-14 body from KiCad `Package_SO/SOIC-14_3.9x8.7mm_P1.27mm`.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/cd4001b.pdf) (23 pp, sha256 `d33d12a8e68dd293`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/cd4001-datasheet.pdf)

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