component
SN74HCT244PWR
Public Made by Adomby adom
Texas Instruments Buffer/Driver/Transceiver, TSSOP-20. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.md+14@@ -59,6 +59,20 @@ SN74HCT244PWR from Texas Instruments, in a TSSOP-20. Pinout and pin descriptions - Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm` - 3D model: TSSOP-20 (KiCad packages3D, STEP) +## 3D model downloads++Two STEP files. Same geometry, different body top:++| File | Size | Use it when |+|---|---|---|+| [`sn74hct244pwr.step`](sn74hct244pwr.step) | 267 KB | You want the bare part, or you mark your own boards. |+| [`sn74hct244pwr-etched.step`](sn74hct244pwr-etched.step) | 2.8 MB | You want the part with `SN74HCT244PWR` already on it. |++The marking in the etched file is real recessed geometry cut into the solid, not a+texture or a decal: 727 faces against 327 in the bare model. It+survives export, section views, and rendering in any CAD tool, and it drops straight+into KiCad or Fusion with no extra setup.+ ## Provenance Data extracted from the manufacturer datasheet, not a distributor listing:
package.json+1−1@@ -1,6 +1,6 @@ { "slug": "sn74hct244pwr",- "version": "0.1.0",+ "version": "0.2.0", "type": "component", "description": "Texas Instruments Buffer/Driver/Transceiver, TSSOP-20. Datasheet-verified pinout, KiCad symbol/footprint/3D.", "tags": [
page.json+10−10@@ -4,7 +4,7 @@ "slug": "sn74hct244pwr", "title": "SN74HCT244PWR", "brief": "Texas Instruments Buffer/Driver/Transceiver, TSSOP-20. Datasheet-verified pinout, KiCad symbol/footprint/3D.",- "version": "0.1.0",+ "version": "0.2.0", "license": "CC-BY-SA-4.0", "tags": [ "component",@@ -35,19 +35,19 @@ "number": "1", "name": "1OE", "type": "input",- "description": "Active-low output enable for bank 1 (buffers 1A1-1A4 \u2192 1Y1-1Y4). When low, bank 1 outputs pass the A input data. When high, bank 1 outputs are placed in the high-impedance state. Must be tied to VCC through a pull-up for high-Z during power up/down."+ "description": "Active-low output enable for bank 1 (buffers 1A1-1A4 → 1Y1-1Y4). When low, bank 1 outputs pass the A input data. When high, bank 1 outputs are placed in the high-impedance state. Must be tied to VCC through a pull-up for high-Z during power up/down." }, { "number": "2", "name": "1A1", "type": "input",- "description": "Bank 1 buffer input 1. TTL-compatible CMOS input; buffered non-inverting to 1Y1 when 1OE is low. VIH \u2265 2 V, VIL \u2264 0.8 V at VCC = 4.5-5.5 V; input current \u2264 \u00b11 \u00b5A."+ "description": "Bank 1 buffer input 1. TTL-compatible CMOS input; buffered non-inverting to 1Y1 when 1OE is low. VIH ≥ 2 V, VIL ≤ 0.8 V at VCC = 4.5-5.5 V; input current ≤ ±1 µA." }, { "number": "3", "name": "2Y4", "type": "tri_state",- "description": "Bank 2 buffer output 4. 3-state, non-inverting output driven by 2A4 when 2OE is low; high-impedance when 2OE is high. \u00b16 mA output drive at 5 V."+ "description": "Bank 2 buffer output 4. 3-state, non-inverting output driven by 2A4 when 2OE is low; high-impedance when 2OE is high. ±6 mA output drive at 5 V." }, { "number": "4",@@ -143,13 +143,13 @@ "number": "19", "name": "2OE", "type": "input",- "description": "Active-low output enable for bank 2 (buffers 2A1-2A4 \u2192 2Y1-2Y4). When low, bank 2 outputs pass the A input data. When high, bank 2 outputs are placed in the high-impedance state."+ "description": "Active-low output enable for bank 2 (buffers 2A1-2A4 → 2Y1-2Y4). When low, bank 2 outputs pass the A input data. When high, bank 2 outputs are placed in the high-impedance state." }, { "number": "20", "name": "VCC", "type": "power_in",- "description": "Positive supply rail, 4.5 V to 5.5 V (recommended). Absolute max 7 V. Decouple locally to GND with a 0.1 \u00b5F ceramic capacitor."+ "description": "Positive supply rail, 4.5 V to 5.5 V (recommended). Absolute max 7 V. Decouple locally to GND with a 0.1 µF ceramic capacitor." } ], "provenance": {@@ -223,9 +223,9 @@ "docs/hero.png", "docs/sn74hct244pwr-datasheet.pdf", "viewers/symbol.html",- "viewers/footprint.html"+ "viewers/footprint.html",+ "pads.json" ],- "visibility": {- "public": true- }+ "visibility": "public",+ "description": "Texas Instruments Buffer/Driver/Transceiver, TSSOP-20. Datasheet-verified pinout, KiCad symbol/footprint/3D." }