component
74ACT244SCX
Public Made by Adomby adom
ON Semiconductor Logic-Buffers, Drivers, Receivers, Transceivers, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdown74ACT244SCX
ON Semiconductor · Logic-Buffers, Drivers, Receivers, Transceivers · SOIC-20-300mil
74ACT244SCX from ON Semiconductor, in a SOIC-20-300mil. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OE1 | input | Active-low 3-STATE output enable input for outputs O0-O3 (pins 18, 16, 14, 12), which are high impedance when OE1 is HIGH. |
| 2 | I0 | input | Data input that drives output O0 (pin 18) when OE1 is LOW; ACT244 inputs are TTL-compatible. |
| 3 | O4 | tri_state | 3-STATE output following input I4 when OE2 is LOW and high impedance when OE2 is HIGH, sourcing/sinking 24mA. |
| 4 | I1 | input | Data input that drives output O1 (pin 16) when OE1 is LOW; ACT244 inputs are TTL-compatible. |
| 5 | O5 | tri_state | 3-STATE output following input I5 when OE2 is LOW and high impedance when OE2 is HIGH, sourcing/sinking 24mA. |
| 6 | I2 | input | Data input that drives output O2 (pin 14) when OE1 is LOW; ACT244 inputs are TTL-compatible. |
| 7 | O6 | tri_state | 3-STATE output following input I6 when OE2 is LOW and high impedance when OE2 is HIGH, sourcing/sinking 24mA. |
| 8 | I3 | input | Data input that drives output O3 (pin 12) when OE1 is LOW; ACT244 inputs are TTL-compatible. |
| 9 | O7 | tri_state | 3-STATE output following input I7 when OE2 is LOW and high impedance when OE2 is HIGH, sourcing/sinking 24mA. |
| 10 | GND | power_in | Ground reference pin. |
| 11 | I7 | input | Data input that drives output O7 (pin 9) when OE2 is LOW; ACT244 inputs are TTL-compatible. |
| 12 | O3 | tri_state | 3-STATE output following input I3 when OE1 is LOW and high impedance when OE1 is HIGH, sourcing/sinking 24mA. |
| 13 | I6 | input | Data input that drives output O6 (pin 7) when OE2 is LOW; ACT244 inputs are TTL-compatible. |
| 14 | O2 | tri_state | 3-STATE output following input I2 when OE1 is LOW and high impedance when OE1 is HIGH, sourcing/sinking 24mA. |
| 15 | I5 | input | Data input that drives output O5 (pin 5) when OE2 is LOW; ACT244 inputs are TTL-compatible. |
| 16 | O1 | tri_state | 3-STATE output following input I1 when OE1 is LOW and high impedance when OE1 is HIGH, sourcing/sinking 24mA. |
| 17 | I4 | input | Data input that drives output O4 (pin 3) when OE2 is LOW; ACT244 inputs are TTL-compatible. |
| 18 | O0 | tri_state | 3-STATE output following input I0 when OE1 is LOW and high impedance when OE1 is HIGH, sourcing/sinking 24mA. |
| 19 | OE2 | input | Active-low 3-STATE output enable input for outputs O4-O7 (pins 3, 5, 7, 9), which are high impedance when OE2 is HIGH. |
| 20 | VCC | power_in | Positive supply pin; the ACT device is recommended for 4.5V to 5.5V operation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ON Semiconductor |
| Package | SOIC-20-300mil |
| Category | Logic ICs |
| Pins | 20 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | PC | 74AC244PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide | 2 |
CAD (KiCad official)
- Symbol:
74ACT244SCX - Footprint:
Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm - 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
- 3D model files:
74act244scx-etched.step/74act244scx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);74act244scx.step/74act244scx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ON Semiconductor datasheet (14 pp, sha256
5cd9e6c2a435a73f, retrieved 2026-10-29, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-5-5(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).