component
CD74HC221M96
Public Made by Adomby adom
Texas Instruments Monostable Multivibrators, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+52@@ -0,0 +1,52 @@+# CD74HC221M96++**Texas Instruments** · Monostable Multivibrators · SOIC-16++CD74HC221M96 from Texas Instruments, in a SOIC-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 | Trailing-edge (active-LOW falling) trigger input for monostable 1; triggers on HIGH-to-LOW transition when 1B is HIGH and 1R is HIGH. |+| 2 | 1B | input | Leading-edge (active-HIGH rising) Schmitt-trigger input for monostable 1; triggers on LOW-to-HIGH transition when 1A is LOW and 1R is HIGH; rise/fall time unlimited. |+| 3 | 1R | input | Active-LOW overriding reset input for monostable 1; a LOW level immediately terminates the output pulse, forcing 1Q LOW and 1Q̄ HIGH; minimum pulse width 14 ns at 4.5 V. |+| 4 | 1Q̄ | output | Buffered complementary output of monostable 1; idles HIGH, pulses LOW for tW = 0.7 × RX × CX; VOH ≥ 4.4 V and VOL ≤ 0.1 V at VCC = 4.5 V, IO = ±0.02 mA. |+| 5 | 2Q | output | Buffered true output of monostable 2; idles LOW, pulses HIGH for tW = 0.7 × RX × CX; VOH ≥ 4.4 V and VOL ≤ 0.1 V at VCC = 4.5 V, IO = ±0.02 mA. |+| 6 | 2CX | passive | External timing capacitor (CX) connection for monostable 2; CX is connected between this pin and GND; minimum CX = 0 pF. |+| 7 | 2CXRX | passive | External timing resistor-capacitor junction for monostable 2; RX connected between this pin and VCC, CX between pin 6 and GND; minimum RX = 500 Ω typical. |+| 8 | GND | power_in | Ground (0 V) supply reference; maximum DC VCC or ground current ICC = ±50 mA. |+| 9 | 2A | input | Trailing-edge (active-LOW falling) trigger input for monostable 2; triggers on HIGH-to-LOW transition when 2B is HIGH and 2R is HIGH. |+| 10 | 2B | input | Leading-edge (active-HIGH rising) Schmitt-trigger input for monostable 2; triggers on LOW-to-HIGH transition when 2A is LOW and 2R is HIGH; rise/fall time unlimited. |+| 11 | 2R | input | Active-LOW overriding reset input for monostable 2; a LOW level immediately terminates the output pulse, forcing 2Q LOW and 2Q̄ HIGH; minimum pulse width 14 ns at 4.5 V. |+| 12 | 2Q̄ | output | Buffered complementary output of monostable 2; idles HIGH, pulses LOW for tW = 0.7 × RX × CX; VOH ≥ 4.4 V and VOL ≤ 0.1 V at VCC = 4.5 V, IO = ±0.02 mA. |+| 13 | 1Q | output | Buffered true output of monostable 1; idles LOW, pulses HIGH for tW = 0.7 × RX × CX; VOH ≥ 4.4 V and VOL ≤ 0.1 V at VCC = 4.5 V, IO = ±0.02 mA. |+| 14 | 1CX | passive | External timing capacitor (CX) connection for monostable 1; CX is connected between this pin and GND; minimum CX = 0 pF. |+| 15 | 1CXRX | passive | External timing resistor-capacitor junction for monostable 1; RX connected between this pin and VCC, CX between pin 14 and GND; minimum RX = 500 Ω typical. |+| 16 | VCC | power_in | Positive supply voltage; HC type 2 V to 6 V operating range, absolute maximum −0.5 V to 7 V; quiescent ICC ≤ 8 µA typical at 6 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-16 |+| Category | Logic |+| Pins | 16 |++## CAD (KiCad official)++- Symbol: `CD74HC221M96`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SOIC-16 (KiCad packages3D, STEP)+- 3D model files: `cd74hc221m96-etched.step` / `cd74hc221m96-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cd74hc221m96.step` / `cd74hc221m96.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/cd74hc221) (25 pp, sha256 `7f1f24f5229cfed7`, retrieved 2026-09-22, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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).++[Datasheet PDF](docs/cd74hc221m96-datasheet.pdf)
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Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "logic",+ "cd74hc221m96",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "cd74hc221m96.kicad_sym",+ "cd74hc221m96.kicad_mod",+ "cd74hc221m96.glb",+ "cd74hc221m96.step",+ "cd74hc221m96.lbr",+ "docs/hero.png",+ "docs/cd74hc221m96-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "CD74HC221M96",+ "manufacturer": "Texas Instruments",+ "package": "SOIC-16",+ "pin_count": 16,+ "category": "Logic",+ "subcategory": "Monostable Multivibrators",+ "datasheet": "https://www.ti.com/cn/lit/gpn/cd74hc221",+ "parts": {+ "symbol": "cd74hc221m96.kicad_sym",+ "footprint": "cd74hc221m96.kicad_mod",+ "model_3d": "cd74hc221m96-etched.glb",+ "model_3d_plain": "cd74hc221m96.glb",+ "model_3d_step": "cd74hc221m96-etched.step",+ "model_3d_step_plain": "cd74hc221m96.step",+ "lbr": "cd74hc221m96.lbr"+ },+ "distributor_links": {+ "lcsc": "C133954"+ },+ "pins": [+ {+ "number": "1",+ "name": "1A",+ "type": "input",+ "description": "Trailing-edge (active-LOW falling) trigger input for monostable 1; triggers on HIGH-to-LOW transition when 1B is HIGH and 1R is HIGH."+ },+ {+ "number": "2",+ "name": "1B",+ "type": "input",+ "description": "Leading-edge (active-HIGH rising) Schmitt-trigger input for monostable 1; triggers on LOW-to-HIGH transition when 1A is LOW and 1R is HIGH; rise/fall time unlimited."+ },+ {+ "number": "3",+ "name": "1R",+ "type": "input",+ "description": "Active-LOW overriding reset input for monostable 1; a LOW level immediately terminates the output pulse, forcing 1Q LOW and 1Q̄ HIGH; minimum pulse width 14 ns at 4.5 V."+ },+ {+ "number": "4",+ "name": "1Q̄",+ "type": "output",+ "description": "Buffered complementary output of monostable 1; idles HIGH, pulses LOW for tW = 0.7 × RX × CX; VOH ≥ 4.4 V and VOL ≤ 0.1 V at VCC = 4.5 V, IO = ±0.02 mA."+ },+ {+ "number": "5",+ "name": "2Q",+ "type": "output",+ "description": "Buffered true output of monostable 2; idles LOW, pulses HIGH for tW = 0.7 × RX × CX; VOH ≥ 4.4 V and VOL ≤ 0.1 V at VCC = 4.5 V, IO = ±0.02 mA."+ },+ {+ "number": "6",+ "name": "2CX",+ "type": "passive",+ "description": "External timing capacitor (CX) connection for monostable 2; CX is connected between this pin and GND; minimum CX = 0 pF."+ },+ {+ "number": "7",+ "name": "2CXRX",+ "type": "passive",+ "description": "External timing resistor-capacitor junction for monostable 2; RX connected between this pin and VCC, CX between pin 6 and GND; minimum RX = 500 Ω typical."+ },+ {+ "number": "8",+ "name": "GND",+ "type": "power_in",+ "description": "Ground (0 V) supply reference; maximum DC VCC or ground current ICC = ±50 mA."+ },+ {+ "number": "9",+ "name": "2A",+ "type": "input",+ "description": "Trailing-edge (active-LOW falling) trigger input for monostable 2; triggers on HIGH-to-LOW transition when 2B is HIGH and 2R is HIGH."+ },+ {+ "number": "10",+ "name": "2B",+ "type": "input",+ "description": "Leading-edge (active-HIGH rising) Schmitt-trigger input for monostable 2; triggers on LOW-to-HIGH transition when 2A is LOW and 2R is HIGH; rise/fall time unlimited."+ },+ {+ "number": "11",+ "name": "2R",+ "type": "input",+ "description": "Active-LOW overriding reset input for monostable 2; a LOW level immediately terminates the output pulse, forcing 2Q LOW and 2Q̄ HIGH; minimum pulse width 14 ns at 4.5 V."+ },+ {+ "number": "12",+ "name": "2Q̄",+ "type": "output",+ "description": "Buffered complementary output of monostable 2; idles HIGH, pulses LOW for tW = 0.7 × RX × CX; VOH ≥ 4.4 V and VOL ≤ 0.1 V at VCC = 4.5 V, IO = ±0.02 mA."+ },+ {+ "number": "13",+ "name": "1Q",+ "type": "output",+ "description": "Buffered true output of monostable 1; idles LOW, pulses HIGH for tW = 0.7 × RX × CX; VOH ≥ 4.4 V and VOL ≤ 0.1 V at VCC = 4.5 V, IO = ±0.02 mA."+ },+ {+ "number": "14",+ "name": "1CX",+ "type": "passive",+ "description": "External timing capacitor (CX) connection for monostable 1; CX is connected between this pin and GND; minimum CX = 0 pF."+ },+ {+ "number": "15",+ "name": "1CXRX",+ "type": "passive",+ "description": "External timing resistor-capacitor junction for monostable 1; RX connected between this pin and VCC, CX between pin 14 and GND; minimum RX = 500 Ω typical."+ },+ {+ "number": "16",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive supply voltage; HC type 2 V to 6 V operating range, absolute maximum −0.5 V to 7 V; quiescent ICC ≤ 8 µA typical at 6 V."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-4-6",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: PAGE 1 contains a pinout diagram for CD74HC221 (PDIP, SOIC, SOP, TSSOP) but the ASCII representation"+ ],+ "pages_sent": 25,+ "cost_usd": 0.5667,+ "at": "2026-09-22T01:27:54"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/cd74hc221",+ "pages": 25,+ "sha256": "7f1f24f5229cfed7",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 16,+ "described": 16,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}