component
MC74AC573DTR2G
Public Made by Adomby adom
onsemi Latches, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.md+56docs/hero.pngdocs/mc74ac573dtr2g-datasheet.pdf+3872mc74ac573dtr2g-etched.glbmc74ac573dtr2g-hero.glbmc74ac573dtr2g-hero.overlay.json+524mc74ac573dtr2g.glbmc74ac573dtr2g.kicad_mod+336mc74ac573dtr2g.kicad_sym+93mc74ac573dtr2g.lbr+162mc74ac573dtr2g.step+6627package.json+266page.json+272viewers/footprint.html+1viewers/symbol.html+1README.mdadded+56@@ -0,0 +1,56 @@+# MC74AC573DTR2G++**onsemi** · Latches · TSSOP-20++MC74AC573DTR2G from onsemi, in a TSSOP-20. 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 | OE | input | 3-state output enable input; when LOW the output buffers are enabled, and when HIGH the outputs are high impedance without blocking new data from entering the latches. |+| 2 | D0 | input | Data input 0 that enters the latch while LE is HIGH. |+| 3 | D1 | input | Data input 1 that enters the latch while LE is HIGH. |+| 4 | D2 | input | Data input 2 that enters the latch while LE is HIGH. |+| 5 | D3 | input | Data input 3 that enters the latch while LE is HIGH. |+| 6 | D4 | input | Data input 4 that enters the latch while LE is HIGH. |+| 7 | D5 | input | Data input 5 that enters the latch while LE is HIGH. |+| 8 | D6 | input | Data input 6 that enters the latch while LE is HIGH. |+| 9 | D7 | input | Data input 7 that enters the latch while LE is HIGH. |+| 10 | GND | power_in | Ground reference for the supply and all input/output voltages. |+| 11 | LE | input | Latch enable input; latches are transparent when HIGH and store the data present at the HIGH-to-LOW transition when LOW. |+| 12 | O7 | tri_state | 3-state latch output 7 that sources/sinks 24 mA and is high impedance when OE is HIGH. |+| 13 | O6 | tri_state | 3-state latch output 6 that sources/sinks 24 mA and is high impedance when OE is HIGH. |+| 14 | O5 | tri_state | 3-state latch output 5 that sources/sinks 24 mA and is high impedance when OE is HIGH. |+| 15 | O4 | tri_state | 3-state latch output 4 that sources/sinks 24 mA and is high impedance when OE is HIGH. |+| 16 | O3 | tri_state | 3-state latch output 3 that sources/sinks 24 mA and is high impedance when OE is HIGH. |+| 17 | O2 | tri_state | 3-state latch output 2 that sources/sinks 24 mA and is high impedance when OE is HIGH. |+| 18 | O1 | tri_state | 3-state latch output 1 that sources/sinks 24 mA and is high impedance when OE is HIGH. |+| 19 | O0 | tri_state | 3-state latch output 0 that sources/sinks 24 mA and is high impedance when OE is HIGH. |+| 20 | VCC | power_in | Positive supply; recommended 2.0 V to 6.0 V for 'AC and 4.5 V to 5.5 V for 'ACT, absolute maximum -0.5 V to +7.0 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | onsemi |+| Package | TSSOP-20 |+| Category | Logic |+| Pins | 20 |++## CAD (KiCad official)++- Symbol: `MC74AC573DTR2G`+- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`+- 3D model: TSSOP-20 (KiCad packages3D, STEP)+- 3D model files: `mc74ac573dtr2g-etched.step` / `mc74ac573dtr2g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mc74ac573dtr2g.step` / `mc74ac573dtr2g.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [onsemi datasheet](https://www.onsemi.com/pdf/datasheet/mc74ac573dtr2-d.pdf) (11 pp, sha256 `607ffb8810b5687a`, retrieved 2026-10-20, tier: manufacturer)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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).++[Datasheet PDF](docs/mc74ac573dtr2g-datasheet.pdf)
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docs/mc74ac573dtr2g-datasheet.pdfadded+3872@@ -0,0 +1,3872 @@+%PDF-1.4+%����+1 0 obj+<<+/Type /Catalog+/Version /1.6+/Pages 2 0 R+/Metadata 3 0 R+/PageLabels 4 0 R+>>+endobj+5 0 obj+<<+/Author (ON Semiconductor)+/CreationDate (D:20150302161044-07'00')+/Creator (BroadVision, Inc.)+/Keywords ()+/ModDate (D:20201016094047+08'00')+/Producer (Acrobat Distiller 10.0.0 \(Windows\))+/Subject <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>+/Title (MC74AC573 - Octal Buffer/Line Driver with 3-State Outputs)+>>+endobj+2 0 obj+<<+/Type /Pages+/Kids [6 0 R 7 0 R 8 0 R 9 0 R 10 0 R 11 0 R 12 0 R 13 0 R 14 0 R 15 0 R+16 0 R]+/Count 11+>>+endobj+3 0 obj+<<+/Length 4100+/Subtype /XML+/Type /Metadata+>>+stream +<?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d"?>+<x:xmpmeta xmlns:x="adobe:ns:meta/" x:xmptk="Adobe XMP Core 5.6-c017 91.164464, 2020/06/15-10:20:05 ">+ <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">+ <rdf:Description rdf:about=""+ xmlns:dc="http://purl.org/dc/elements/1.1/"+ xmlns:xmp="http://ns.adobe.com/xap/1.0/"+ xmlns:pdf="http://ns.adobe.com/pdf/1.3/"+ xmlns:xmpMM="http://ns.adobe.com/xap/1.0/mm/"+ xmlns:illustrator="http://ns.adobe.com/illustrator/1.0/">+ <dc:format>application/pdf</dc:format>+ <dc:title>+ <rdf:Alt>+ <rdf:li xml:lang="x-default">MC74AC573 - Octal Buffer/Line Driver with 3-State Outputs</rdf:li>+ </rdf:Alt>+ </dc:title>+ <dc:creator>+ <rdf:Seq>+ <rdf:li>ON Semiconductor</rdf:li>+ </rdf:Seq>+ </dc:creator>+ <dc:description>+ <rdf:Alt>+ <rdf:li xml:lang="x-default">The MC74AC573/74ACT573 is a high−speed octal latch with
buffered common Latch Enable (LE) and buffered common Output
Enable (OE) inputs.
The MC74AC573/74ACT573 is functionally identical to the
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