74HC123PW

@@ -0,0 +1,57 @@+# 74HC123PW++**Nexperia** · Monostable Multivibrators · TSSOP-16++74HC123PW from Nexperia, in a TSSOP-16. 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 | 1A | input | Negative-edge triggered input for monostable 1 (active-LOW trigger, Schmitt-trigger input). |+| 2 | 1B | input | Positive-edge triggered input for monostable 1 (Schmitt-trigger input). |+| 3 | 1RD | input | Direct reset input for monostable 1 - active LOW terminates the output pulse; also acts as a positive-edge triggered input. |+| 4 | 1Q_N | output | Active-LOW (inverted) output for monostable 1. Goes LOW during the programmed output pulse. |+| 5 | 2Q | output | Active-HIGH output for monostable 2. Goes HIGH during the programmed output pulse. |+| 6 | 2CEXT | passive | External timing capacitor connection for monostable 2. Together with 2REXT/CEXT sets the output pulse width. |+| 7 | 2REXT/CEXT | passive | External timing resistor and capacitor connection for monostable 2. REXT ties to VCC through the timing resistor; CEXT ties between this pin and 2CEXT. |+| 8 | GND | power_in | Ground reference (0 V). |+| 9 | 2A | input | Negative-edge triggered input for monostable 2 (active-LOW trigger, Schmitt-trigger input). |+| 10 | 2B | input | Positive-edge triggered input for monostable 2 (Schmitt-trigger input). |+| 11 | 2RD | input | Direct reset input for monostable 2 - active LOW terminates the output pulse; also acts as a positive-edge triggered input. |+| 12 | 2Q_N | output | Active-LOW (inverted) output for monostable 2. Goes LOW during the programmed output pulse. |+| 13 | 1Q | output | Active-HIGH output for monostable 1. Goes HIGH during the programmed output pulse. |+| 14 | 1CEXT | passive | External timing capacitor connection for monostable 1. Together with 1REXT/CEXT sets the output pulse width. |+| 15 | 1REXT/CEXT | passive | External timing resistor and capacitor connection for monostable 1. REXT ties to VCC through the timing resistor; CEXT ties between this pin and 1CEXT. |+| 16 | VCC | power_in | Positive supply voltage. Operating range 2.0 V to 6.0 V (74HC123) or 4.5 V to 5.5 V (74HCT123). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Nexperia |+| Package | TSSOP-16 |+| Category | Logic |+| Pins | 16 |++## Ordering variants++- `74HC123PWPW`+- `74HC123PWD`+- `74HC123PWBQ`++## CAD (KiCad official)++- Symbol: `74HC123PW`+- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`+- 3D model: TSSOP-16 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Nexperia datasheet](https://assets.nexperia.com/documents/data-sheet/74HC123PW.pdf) (20 pp, sha256 `0b5ba7a32cf4830a`, 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/74hc123pw-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "74hc123pw",+  "version": "0.1.0",+  "type": "component",+  "description": "Nexperia Monostable Multivibrators, TSSOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "logic",+    "74hc123pw"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "74hc123pw.kicad_sym",+    "74hc123pw.kicad_mod",+    "74hc123pw.glb",+    "74hc123pw.step",+    "74hc123pw.lbr",+    "docs/hero.png",+    "docs/74hc123pw-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file