component
MAX7221EWG+T
Public Made by Adomby adom
Analog Devices Inc Maxim Integrated Digital Tube Drivers, SOIC-24-300mil. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+60@@ -0,0 +1,60 @@+# MAX7221EWG+T++**Analog Devices Inc Maxim Integrated** · Digital Tube Drivers · SOIC-24-300mil++MAX7221EWG+T from Analog Devices Inc Maxim Integrated, in a SOIC-24-300mil. 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 | DIN | input | Serial-Data Input; data is loaded into the internal 16-bit shift register on CLK rising edge. |+| 2 | DIG 0 | tri_state | Digit 0 drive line that sinks current from display common cathode; high-impedance when turned off on MAX7221. |+| 3 | DIG 1 | tri_state | Digit 1 drive line that sinks current from display common cathode; high-impedance when turned off on MAX7221. |+| 4 | GND | power_in | Ground; both GND pins must be connected. |+| 5 | DIG 2 | tri_state | Digit 2 drive line that sinks current from display common cathode; high-impedance when turned off on MAX7221. |+| 6 | DIG 3 | tri_state | Digit 3 drive line that sinks current from display common cathode; high-impedance when turned off on MAX7221. |+| 7 | DIG 4 | tri_state | Digit 4 drive line that sinks current from display common cathode; high-impedance when turned off on MAX7221. |+| 8 | DIG 5 | tri_state | Digit 5 drive line that sinks current from display common cathode; high-impedance when turned off on MAX7221. |+| 9 | GND | power_in | Ground; both GND pins must be connected. |+| 10 | DIG 6 | tri_state | Digit 6 drive line that sinks current from display common cathode; high-impedance when turned off on MAX7221. |+| 11 | DIG 7 | tri_state | Digit 7 drive line that sinks current from display common cathode; high-impedance when turned off on MAX7221. |+| 12 | CS | input | Chip-Select Input (MAX7221 only); serial data loaded into shift register while CS is low; last 16 bits latched on CS rising edge. |+| 13 | CLK | input | Serial-Clock Input (10MHz maximum); data shifted into register on CLK rising edge; data clocked out DOUT on CLK falling edge. |+| 14 | SEG A | tri_state | Segment A drive sourcing current to display; high-impedance when turned off on MAX7221. |+| 15 | SEG B | tri_state | Segment B drive sourcing current to display; high-impedance when turned off on MAX7221. |+| 16 | SEG C | tri_state | Segment C drive sourcing current to display; high-impedance when turned off on MAX7221. |+| 17 | SEG D | tri_state | Segment D drive sourcing current to display; high-impedance when turned off on MAX7221. |+| 18 | ISET | passive | Connect to V+ through resistor RSET to set peak segment current; segment current approximately 100 times the current in ISET. |+| 19 | V+ | power_in | Positive supply voltage; connect to +5V. |+| 20 | SEG E | tri_state | Segment E drive sourcing current to display; high-impedance when turned off on MAX7221. |+| 21 | SEG F | tri_state | Segment F drive sourcing current to display; high-impedance when turned off on MAX7221. |+| 22 | SEG G | tri_state | Segment G drive sourcing current to display; high-impedance when turned off on MAX7221. |+| 23 | SEG DP | tri_state | Decimal point drive sourcing current to display; high-impedance when turned off on MAX7221. |+| 24 | DOUT | output | Serial-Data Output; data into DIN valid at DOUT 16.5 clock cycles later; used to daisy-chain devices; never high-impedance. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Analog Devices Inc Maxim Integrated |+| Package | SOIC-24-300mil |+| Category | LED Drivers |+| Pins | 24 |++## CAD (KiCad official)++- Symbol: `MAX7221EWG+T`+- Footprint: `Package_SO:SOIC-24W_7.5x15.4mm_P1.27mm`+- 3D model: SOIC-24-300mil (KiCad packages3D, STEP)+- 3D model files: `max7221ewg-t-etched.step` / `max7221ewg-t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `max7221ewg-t.step` / `max7221ewg-t.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Analog Devices Inc Maxim Integrated datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586192750752096256) (17 pp, sha256 `f312632f10a27121`, retrieved 2026-09-29, tier: lcsc)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/max7221ewg-t-datasheet.pdf)
page.jsonadded+239@@ -0,0 +1,239 @@+{+ "slug": "max7221ewg-t",+ "version": "0.1.0",+ "type": "component",+ "description": "Analog Devices Inc Maxim Integrated Digital Tube Drivers, SOIC-24-300mil. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "led drivers",+ "max7221ewg+t",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "max7221ewg-t.kicad_sym",+ "max7221ewg-t.kicad_mod",+ "max7221ewg-t.glb",+ "max7221ewg-t.step",+ "max7221ewg-t.lbr",+ "docs/hero.png",+ "docs/max7221ewg-t-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "MAX7221EWG+T",+ "manufacturer": "Analog Devices Inc Maxim Integrated",+ "package": "SOIC-24-300mil",+ "pin_count": 24,+ "category": "LED Drivers",+ "subcategory": "Digital Tube Drivers",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586192750752096256",+ "parts": {+ "symbol": "max7221ewg-t.kicad_sym",+ "footprint": "max7221ewg-t.kicad_mod",+ "model_3d": "max7221ewg-t-etched.glb",+ "model_3d_plain": "max7221ewg-t.glb",+ "model_3d_step": "max7221ewg-t-etched.step",+ "model_3d_step_plain": "max7221ewg-t.step",+ "lbr": "max7221ewg-t.lbr"+ },+ "distributor_links": {+ "lcsc": "C124668",+ "digikey": "MAX7221EWG+TTR-ND",+ "mouser": "700-MAX7221EWGT"+ },+ "distributor_check": {+ "checked_at": "2026-09-29T17:08:55Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "MAX7221EWG+TTR-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "700-MAX7221EWGT",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "DIN",+ "type": "input",+ "description": "Serial-Data Input; data is loaded into the internal 16-bit shift register on CLK rising edge."+ },+ {+ "number": "2",+ "name": "DIG 0",+ "type": "tri_state",+ "description": "Digit 0 drive line that sinks current from display common cathode; high-impedance when turned off on MAX7221."+ },+ {+ "number": "3",+ "name": "DIG 1",+ "type": "tri_state",+ "description": "Digit 1 drive line that sinks current from display common cathode; high-impedance when turned off on MAX7221."+ },+ {+ "number": "4",+ "name": "GND",+ "type": "power_in",+ "description": "Ground; both GND pins must be connected."+ },+ {+ "number": "5",+ "name": "DIG 2",+ "type": "tri_state",+ "description": "Digit 2 drive line that sinks current from display common cathode; high-impedance when turned off on MAX7221."+ },+ {+ "number": "6",+ "name": "DIG 3",+ "type": "tri_state",+ "description": "Digit 3 drive line that sinks current from display common cathode; high-impedance when turned off on MAX7221."+ },+ {+ "number": "7",+ "name": "DIG 4",+ "type": "tri_state",+ "description": "Digit 4 drive line that sinks current from display common cathode; high-impedance when turned off on MAX7221."+ },+ {+ "number": "8",+ "name": "DIG 5",+ "type": "tri_state",+ "description": "Digit 5 drive line that sinks current from display common cathode; high-impedance when turned off on MAX7221."+ },+ {+ "number": "9",+ "name": "GND",+ "type": "power_in",+ "description": "Ground; both GND pins must be connected."+ },+ {+ "number": "10",+ "name": "DIG 6",+ "type": "tri_state",+ "description": "Digit 6 drive line that sinks current from display common cathode; high-impedance when turned off on MAX7221."+ },+ {+ "number": "11",+ "name": "DIG 7",+ "type": "tri_state",+ "description": "Digit 7 drive line that sinks current from display common cathode; high-impedance when turned off on MAX7221."+ },+ {+ "number": "12",+ "name": "CS",+ "type": "input",+ "description": "Chip-Select Input (MAX7221 only); serial data loaded into shift register while CS is low; last 16 bits latched on CS rising edge."+ },+ {+ "number": "13",+ "name": "CLK",+ "type": "input",+ "description": "Serial-Clock Input (10MHz maximum); data shifted into register on CLK rising edge; data clocked out DOUT on CLK falling edge."+ },+ {+ "number": "14",+ "name": "SEG A",+ "type": "tri_state",+ "description": "Segment A drive sourcing current to display; high-impedance when turned off on MAX7221."+ },+ {+ "number": "15",+ "name": "SEG B",+ "type": "tri_state",+ "description": "Segment B drive sourcing current to display; high-impedance when turned off on MAX7221."+ },+ {+ "number": "16",+ "name": "SEG C",+ "type": "tri_state",+ "description": "Segment C drive sourcing current to display; high-impedance when turned off on MAX7221."+ },+ {+ "number": "17",+ "name": "SEG D",+ "type": "tri_state",+ "description": "Segment D drive sourcing current to display; high-impedance when turned off on MAX7221."+ },+ {+ "number": "18",+ "name": "ISET",+ "type": "passive",+ "description": "Connect to V+ through resistor RSET to set peak segment current; segment current approximately 100 times the current in ISET."+ },+ {+ "number": "19",+ "name": "V+",+ "type": "power_in",+ "description": "Positive supply voltage; connect to +5V."+ },+ {+ "number": "20",+ "name": "SEG E",+ "type": "tri_state",+ "description": "Segment E drive sourcing current to display; high-impedance when turned off on MAX7221."+ },+ {+ "number": "21",+ "name": "SEG F",+ "type": "tri_state",+ "description": "Segment F drive sourcing current to display; high-impedance when turned off on MAX7221."+ },+ {+ "number": "22",+ "name": "SEG G",+ "type": "tri_state",+ "description": "Segment G drive sourcing current to display; high-impedance when turned off on MAX7221."+ },+ {+ "number": "23",+ "name": "SEG DP",+ "type": "tri_state",+ "description": "Decimal point drive sourcing current to display; high-impedance when turned off on MAX7221."+ },+ {+ "number": "24",+ "name": "DOUT",+ "type": "output",+ "description": "Serial-Data Output; data into DIN valid at DOUT 16.5 clock cycles later; used to daisy-chain devices; never high-impedance."+ }+ ],+ "provenance": {+ "extractor": "ds2sf",+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586192750752096256",+ "pages": 17,+ "sha256": "f312632f10a27121",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 24,+ "described": 24,+ "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]"+ }+}