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LMK00338RTAT
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Texas Instruments Clock Buffers, Drivers, WQFN-40-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+78@@ -0,0 +1,78 @@+# LMK00338RTAT++**Texas Instruments** · Clock Buffers, Drivers · WQFN-40-EP(6x6)++LMK00338RTAT from Texas Instruments, in a WQFN-40-EP(6x6). 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 | CLKoutA0 | output | Differential clock output A0 |+| 2 | CLKoutA0* | output | Differential clock output A0 |+| 3 | VCCOA | power_in | Power supply for Bank A Output buffers operating from 3.3 V or 2.5 V |+| 4 | CLKoutA1 | output | Differential clock output A1 |+| 5 | CLKoutA1* | output | Differential clock output A1 |+| 6 | VCCOA | power_in | Power supply for Bank A Output buffers operating from 3.3 V or 2.5 V |+| 7 | CLKoutA2 | output | Differential clock output A2 |+| 8 | CLKoutA2* | output | Differential clock output A2 |+| 9 | CLKoutA3 | output | Differential clock output A3 |+| 10 | CLKoutA3* | output | Differential clock output A3 |+| 11 | CLKoutA_EN | input | Bank A low active output buffer enable |+| 12 | VCC | power_in | Power supply for Core and Input buffer blocks operating at 3.3 V |+| 13 | OSCin | input | Input for crystal accepting 10 MHz to 40 MHz crystal or single-ended clock |+| 14 | OSCout | output | Output for crystal, leave floating if OSCin is driven by single-ended clock |+| 15 | CLKin_SEL0 | input | Clock input selection pin |+| 16 | CLKin0 | input | Universal clock input 0 (differential or single-ended) up to 400 MHz |+| 17 | CLKin0* | input | Universal clock input 0 (differential or single-ended) up to 400 MHz |+| 18 | CLKin_SEL1 | input | Clock input selection pin |+| 19 | CLKoutB_EN | input | Bank B low active output buffer enable |+| 20 | GND | power_in | Ground |+| 21 | CLKoutB3* | output | Differential clock output B3 |+| 22 | CLKoutB3 | output | Differential clock output B3 |+| 23 | CLKoutB2* | output | Differential clock output B2 |+| 24 | CLKoutB2 | output | Differential clock output B2 |+| 25 | VCCOB | power_in | Power supply for Bank B Output buffers operating from 3.3 V or 2.5 V |+| 26 | CLKoutB1* | output | Differential clock output B1 |+| 27 | CLKoutB1 | output | Differential clock output B1 |+| 28 | VCCOB | power_in | Power supply for Bank B Output buffers operating from 3.3 V or 2.5 V |+| 29 | CLKoutB0* | output | Differential clock output B0 |+| 30 | CLKoutB0 | output | Differential clock output B0 |+| 31 | GND | power_in | Ground |+| 32 | VCC | power_in | Power supply for Core and Input buffer blocks operating at 3.3 V |+| 33 | CLKin1* | input | Universal clock input 1 (differential or single-ended) up to 400 MHz |+| 34 | CLKin1 | input | Universal clock input 1 (differential or single-ended) up to 400 MHz |+| 35 | VCC | power_in | Power supply for Core and Input buffer blocks operating at 3.3 V |+| 36 | REFout | output | LVCMOS reference output |+| 37 | VCCOC | power_in | Power supply for REFout Output buffer operating from 3.3 V or 2.5 V |+| 38 | REFout_EN | input | REFout enable input with internal synchronization to selected clock input |+| 39 | VCC | power_in | Power supply for Core and Input buffer blocks operating at 3.3 V |+| 40 | GND | power_in | Ground |+| 41 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | WQFN-40-EP(6x6) |+| Category | RTC/Clock Chip |+| Pins | 41 |++## CAD (KiCad official)++- Symbol: `LMK00338RTAT`+- Footprint: `Package_DFN_QFN:QFN-40-1EP_6x6mm_P0.5mm_EP4.6x4.6mm`+- 3D model: WQFN-40-EP(6x6) (KiCad packages3D, STEP)+- 3D model files: `lmk00338rtat-etched.step` / `lmk00338rtat-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lmk00338rtat.step` / `lmk00338rtat.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lmk00338) (34 pp, sha256 `89b6e86d2a67b80d`, retrieved 2026-10-05, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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/lmk00338rtat-datasheet.pdf)
page.jsonadded+359@@ -0,0 +1,359 @@+{+ "slug": "lmk00338rtat",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Clock Buffers, Drivers, WQFN-40-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "rtc-clock chip",+ "lmk00338rtat",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lmk00338rtat.kicad_sym",+ "lmk00338rtat.kicad_mod",+ "lmk00338rtat.glb",+ "lmk00338rtat.step",+ "lmk00338rtat.lbr",+ "docs/hero.png",+ "docs/lmk00338rtat-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "lmk00338rtat-hero.glb",+ "lmk00338rtat-hero.overlay.json"+ ],+ "component": {+ "mpn": "LMK00338RTAT",+ "manufacturer": "Texas Instruments",+ "package": "WQFN-40-EP(6x6)",+ "pin_count": 41,+ "category": "RTC/Clock Chip",+ "subcategory": "Clock Buffers, Drivers",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lmk00338",+ "parts": {+ "symbol": "lmk00338rtat.kicad_sym",+ "footprint": "lmk00338rtat.kicad_mod",+ "model_3d": "lmk00338rtat-hero.glb",+ "model_3d_plain": "lmk00338rtat.glb",+ "model_3d_step": "lmk00338rtat-etched.step",+ "model_3d_step_plain": "lmk00338rtat.step",+ "lbr": "lmk00338rtat.lbr"+ },+ "distributor_links": {+ "lcsc": 2651411,+ "digikey": "296-47794-2-ND",+ "mouser": "595-LMK00338RTAT"+ },+ "distributor_check": {+ "checked_at": "2026-10-05T23:57:05Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-47794-2-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-LMK00338RTAT",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "CLKoutA0",+ "type": "output",+ "description": "Differential clock output A0"+ },+ {+ "number": "2",+ "name": "CLKoutA0*",+ "type": "output",+ "description": "Differential clock output A0"+ },+ {+ "number": "3",+ "name": "VCCOA",+ "type": "power_in",+ "description": "Power supply for Bank A Output buffers operating from 3.3 V or 2.5 V"+ },+ {+ "number": "4",+ "name": "CLKoutA1",+ "type": "output",+ "description": "Differential clock output A1"+ },+ {+ "number": "5",+ "name": "CLKoutA1*",+ "type": "output",+ "description": "Differential clock output A1"+ },+ {+ "number": "6",+ "name": "VCCOA",+ "type": "power_in",+ "description": "Power supply for Bank A Output buffers operating from 3.3 V or 2.5 V"+ },+ {+ "number": "7",+ "name": "CLKoutA2",+ "type": "output",+ "description": "Differential clock output A2"+ },+ {+ "number": "8",+ "name": "CLKoutA2*",+ "type": "output",+ "description": "Differential clock output A2"+ },+ {+ "number": "9",+ "name": "CLKoutA3",+ "type": "output",+ "description": "Differential clock output A3"+ },+ {+ "number": "10",+ "name": "CLKoutA3*",+ "type": "output",+ "description": "Differential clock output A3"+ },+ {+ "number": "11",+ "name": "CLKoutA_EN",+ "type": "input",+ "description": "Bank A low active output buffer enable"+ },+ {+ "number": "12",+ "name": "VCC",+ "type": "power_in",+ "description": "Power supply for Core and Input buffer blocks operating at 3.3 V"+ },+ {+ "number": "13",+ "name": "OSCin",+ "type": "input",+ "description": "Input for crystal accepting 10 MHz to 40 MHz crystal or single-ended clock"+ },+ {+ "number": "14",+ "name": "OSCout",+ "type": "output",+ "description": "Output for crystal, leave floating if OSCin is driven by single-ended clock"+ },+ {+ "number": "15",+ "name": "CLKin_SEL0",+ "type": "input",+ "description": "Clock input selection pin"+ },+ {+ "number": "16",+ "name": "CLKin0",+ "type": "input",+ "description": "Universal clock input 0 (differential or single-ended) up to 400 MHz"+ },+ {+ "number": "17",+ "name": "CLKin0*",+ "type": "input",+ "description": "Universal clock input 0 (differential or single-ended) up to 400 MHz"+ },+ {+ "number": "18",+ "name": "CLKin_SEL1",+ "type": "input",+ "description": "Clock input selection pin"+ },+ {+ "number": "19",+ "name": "CLKoutB_EN",+ "type": "input",+ "description": "Bank B low active output buffer enable"+ },+ {+ "number": "20",+ "name": "GND",+ "type": "power_in",+ "description": "Ground"+ },+ {+ "number": "21",+ "name": "CLKoutB3*",+ "type": "output",+ "description": "Differential clock output B3"+ },+ {+ "number": "22",+ "name": "CLKoutB3",+ "type": "output",+ "description": "Differential clock output B3"+ },+ {+ "number": "23",+ "name": "CLKoutB2*",+ "type": "output",+ "description": "Differential clock output B2"+ },+ {+ "number": "24",+ "name": "CLKoutB2",+ "type": "output",+ "description": "Differential clock output B2"+ },+ {+ "number": "25",+ "name": "VCCOB",+ "type": "power_in",+ "description": "Power supply for Bank B Output buffers operating from 3.3 V or 2.5 V"+ },+ {+ "number": "26",+ "name": "CLKoutB1*",+ "type": "output",+ "description": "Differential clock output B1"+ },+ {+ "number": "27",+ "name": "CLKoutB1",+ "type": "output",+ "description": "Differential clock output B1"+ },+ {+ "number": "28",+ "name": "VCCOB",+ "type": "power_in",+ "description": "Power supply for Bank B Output buffers operating from 3.3 V or 2.5 V"+ },+ {+ "number": "29",+ "name": "CLKoutB0*",+ "type": "output",+ "description": "Differential clock output B0"+ },+ {+ "number": "30",+ "name": "CLKoutB0",+ "type": "output",+ "description": "Differential clock output B0"+ },+ {+ "number": "31",+ "name": "GND",+ "type": "power_in",+ "description": "Ground"+ },+ {+ "number": "32",+ "name": "VCC",+ "type": "power_in",+ "description": "Power supply for Core and Input buffer blocks operating at 3.3 V"+ },+ {+ "number": "33",+ "name": "CLKin1*",+ "type": "input",+ "description": "Universal clock input 1 (differential or single-ended) up to 400 MHz"+ },+ {+ "number": "34",+ "name": "CLKin1",+ "type": "input",+ "description": "Universal clock input 1 (differential or single-ended) up to 400 MHz"+ },+ {+ "number": "35",+ "name": "VCC",+ "type": "power_in",+ "description": "Power supply for Core and Input buffer blocks operating at 3.3 V"+ },+ {+ "number": "36",+ "name": "REFout",+ "type": "output",+ "description": "LVCMOS reference output"+ },+ {+ "number": "37",+ "name": "VCCOC",+ "type": "power_in",+ "description": "Power supply for REFout Output buffer operating from 3.3 V or 2.5 V"+ },+ {+ "number": "38",+ "name": "REFout_EN",+ "type": "input",+ "description": "REFout enable input with internal synchronization to selected clock input"+ },+ {+ "number": "39",+ "name": "VCC",+ "type": "power_in",+ "description": "Power supply for Core and Input buffer blocks operating at 3.3 V"+ },+ {+ "number": "40",+ "name": "GND",+ "type": "power_in",+ "description": "Ground"+ },+ {+ "number": "41",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "exposed pad 41 added from the footprint",+ "dropped thermal pad ['EP'] absent from footprint"+ ],+ "pages_sent": 8,+ "cost_usd": 0.1558,+ "at": "2026-10-05T23:56:48"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lmk00338",+ "pages": 34,+ "sha256": "89b6e86d2a67b80d",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 41,+ "described": 41,+ "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]"+ }+}