component
CD74AC244M
Public Made by Adomby adom
Texas Instruments Buffer/Driver/Transceiver, 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
markdownCD74AC244M
Texas Instruments · Buffer/Driver/Transceiver · SOIC-20-300mil
CD74AC244M from Texas Instruments, 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 | 1OE | input | Active-LOW output enable for the 1Y outputs; HIGH puts them in high impedance. |
| 2 | 1A0 | input | Data input A0 of buffer group 1, non-inverting to 1Y0. |
| 3 | 2Y3 | tri_state | 3-state output of buffer group 2 for 2A3, shown as 2Y0 on the page 2 diagram but 2Y3 on the page 1 functional diagram. |
| 4 | 1A1 | input | Data input A1 of buffer group 1, non-inverting to 1Y1. |
| 5 | 2Y2 | tri_state | 3-state output of buffer group 2 for 2A2, drives ±24 mA. |
| 6 | 1A2 | input | Data input A2 of buffer group 1, non-inverting to 1Y2. |
| 7 | 2Y1 | tri_state | 3-state output of buffer group 2 for 2A1, drives ±24 mA. |
| 8 | 1A3 | input | Data input A3 of buffer group 1, non-inverting to 1Y3. |
| 9 | 2Y0 | tri_state | 3-state output of buffer group 2 for 2A0, drives ±24 mA. |
| 10 | GND | power_in | Ground, 0 V reference for all voltages. |
| 11 | 2A0 | input | Data input A0 of buffer group 2, non-inverting to 2Y0. |
| 12 | 1Y3 | tri_state | 3-state output of buffer group 1 for 1A3, drives ±24 mA. |
| 13 | 2A1 | input | Data input A1 of buffer group 2, non-inverting to 2Y1. |
| 14 | 1Y2 | tri_state | 3-state output of buffer group 1 for 1A2, drives ±24 mA. |
| 15 | 2A2 | input | Data input A2 of buffer group 2, non-inverting to 2Y2. |
| 16 | 1Y1 | tri_state | 3-state output of buffer group 1 for 1A1, drives ±24 mA. |
| 17 | 2A3 | input | Data input A3 of buffer group 2, non-inverting to 2Y3. |
| 18 | 1Y0 | tri_state | 3-state output of buffer group 1 for 1A0, drives ±24 mA. |
| 19 | 2OE | input | Active-LOW output enable for the 2Y outputs; HIGH puts them in high impedance. |
| 20 | VCC | power_in | Supply voltage, 1.5 V to 5.5 V for AC types (absolute max -0.5 to 6 V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-20-300mil |
| Category | Logic ICs |
| Pins | 20 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating temperature (orderable device, packaging addendum) | Op Temp | -55 | 125 | °C | CD74AC244M, SOIC DW 20 | 7 |
CAD (KiCad official)
- Symbol:
CD74AC244M - Footprint:
Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm - 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
- 3D model files:
cd74ac244m-etched.step/cd74ac244m-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cd74ac244m.step/cd74ac244m.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (18 pp, sha256
571ed9bfbbad5851, retrieved 2026-10-23, 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).