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CDCLVD1212RHAR
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Texas Instruments Clock Buffers, Drivers, Distributors, VQFN-40-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+77@@ -0,0 +1,77 @@+# CDCLVD1212RHAR++**Texas Instruments** · Clock Buffers, Drivers, Distributors · VQFN-40-EP(6x6)++CDCLVD1212RHAR from Texas Instruments, in a VQFN-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 | IN_SEL | input | Input selection pin that chooses which clock input (IN0 or IN1) is routed to the outputs; it has an internal 200-kΩ pullup and pulldown, and leaving it open disables the outputs (static). |+| 2 | INP1 | input | Positive side of the redundant differential input pair 1, which can also be used as a single-ended input; the part accepts LVDS, LVPECL, or LVCMOS inputs. |+| 3 | INN1 | input | Negative side of the redundant differential input pair 1; in single-ended operation the appropriate bias voltage VAC_REF must be applied to this unused negative input. |+| 4 | VAC_REF1 | output | Bias voltage output for capacitively coupled inputs; if used, TI recommends a 0.1-µF capacitor to GND on this pin. |+| 5 | VCC | power_in | 2.5-V device supply; recommended range is 2.375 V to 2.625 V. |+| 6 | VCC | power_in | 2.5-V device supply; recommended range is 2.375 V to 2.625 V. |+| 7 | VAC_REF0 | output | Bias voltage output for capacitively coupled inputs; if used, TI recommends a 0.1-µF capacitor to GND on this pin. |+| 8 | INN0 | input | Negative side of the differential input pair 0, which can also be used as a single-ended input with VAC_REF applied to the unused pin. |+| 9 | INP0 | input | Positive side of the differential input pair 0, which can also be used as a single-ended input; the part accepts LVDS, LVPECL, or LVCMOS inputs. |+| 10 | N.C. | unconnected | No connect; this pin is not internally connected. |+| 11 | VCC | power_in | 2.5-V device supply; recommended range is 2.375 V to 2.625 V. |+| 12 | OUTP0 | output | Positive side of LVDS differential output pair 0, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 13 | OUTN0 | output | Negative side of LVDS differential output pair 0, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 14 | OUTP1 | output | Positive side of LVDS differential output pair 1, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 15 | OUTN1 | output | Negative side of LVDS differential output pair 1, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 16 | OUTP2 | output | Positive side of LVDS differential output pair 2, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 17 | OUTN2 | output | Negative side of LVDS differential output pair 2, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 18 | OUTP3 | output | Positive side of LVDS differential output pair 3, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 19 | OUTN3 | output | Negative side of LVDS differential output pair 3, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 20 | VCC | power_in | 2.5-V device supply; recommended range is 2.375 V to 2.625 V. |+| 21 | GND | power_in | Device ground; must be connected to the thermal pad ground. |+| 22 | OUTP4 | output | Positive side of LVDS differential output pair 4, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 23 | OUTN4 | output | Negative side of LVDS differential output pair 4, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 24 | OUTP5 | output | Positive side of LVDS differential output pair 5, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 25 | OUTN5 | output | Negative side of LVDS differential output pair 5, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 26 | OUTP6 | output | Positive side of LVDS differential output pair 6, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 27 | OUTN6 | output | Negative side of LVDS differential output pair 6, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 28 | OUTP7 | output | Positive side of LVDS differential output pair 7, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 29 | OUTN7 | output | Negative side of LVDS differential output pair 7, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 30 | GND | power_in | Device ground; must be connected to the thermal pad ground. |+| 31 | VCC | power_in | 2.5-V device supply; recommended range is 2.375 V to 2.625 V. |+| 32 | OUTP8 | output | Positive side of LVDS differential output pair 8, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 33 | OUTN8 | output | Negative side of LVDS differential output pair 8, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 34 | OUTP9 | output | Positive side of LVDS differential output pair 9, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 35 | OUTN9 | output | Negative side of LVDS differential output pair 9, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 36 | OUTP10 | output | Positive side of LVDS differential output pair 10, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 37 | OUTN10 | output | Negative side of LVDS differential output pair 10, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 38 | OUTP11 | output | Positive side of LVDS differential output pair 11, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 39 | OUTN11 | output | Negative side of LVDS differential output pair 11, ANSI EIA/TIA-644A compatible; the output can handle a permanent short. |+| 40 | VCC | power_in | 2.5-V device supply; recommended range is 2.375 V to 2.625 V. |+| 41 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | VQFN-40-EP(6x6) |+| Category | Clock/Timing |+| Pins | 41 |++## CAD (KiCad official)++- Symbol: `CDCLVD1212RHAR`+- Footprint: `Package_DFN_QFN:QFN-40-1EP_6x6mm_P0.5mm_EP4.6x4.6mm`+- 3D model: VQFN-40-EP(6x6) (KiCad packages3D, STEP)+- 3D model files: `cdclvd1212rhar-etched.step` / `cdclvd1212rhar-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cdclvd1212rhar.step` / `cdclvd1212rhar.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/cdclvd1212) (26 pp, sha256 `5074ca131810290a`, retrieved 2026-10-07, tier: lcsc)+- **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/cdclvd1212rhar-datasheet.pdf)
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it has an internal 200-kΩ pullup and pulldown, and leaving it open disables the outputs (static)."+ },+ {+ "number": "2",+ "name": "INP1",+ "type": "input",+ "description": "Positive side of the redundant differential input pair 1, which can also be used as a single-ended input; the part accepts LVDS, LVPECL, or LVCMOS inputs."+ },+ {+ "number": "3",+ "name": "INN1",+ "type": "input",+ "description": "Negative side of the redundant differential input pair 1; in single-ended operation the appropriate bias voltage VAC_REF must be applied to this unused negative input."+ },+ {+ "number": "4",+ "name": "VAC_REF1",+ "type": "output",+ "description": "Bias voltage output for capacitively coupled inputs; if used, TI recommends a 0.1-µF capacitor to GND on this pin."+ },+ {+ "number": "5",+ "name": "VCC",+ "type": "power_in",+ "description": "2.5-V device supply; recommended range is 2.375 V to 2.625 V."+ },+ {+ "number": "6",+ "name": "VCC",+ "type": "power_in",+ "description": "2.5-V device supply; recommended range is 2.375 V to 2.625 V."+ },+ {+ "number": "7",+ "name": "VAC_REF0",+ "type": "output",+ "description": "Bias voltage output for capacitively coupled inputs; if used, TI recommends a 0.1-µF capacitor to GND on this pin."+ },+ {+ "number": "8",+ "name": "INN0",+ "type": "input",+ "description": "Negative side of the differential input pair 0, which can also be used as a single-ended input with VAC_REF applied to the unused pin."+ },+ {+ "number": "9",+ "name": "INP0",+ "type": "input",+ "description": "Positive side of the differential input pair 0, which can also be used as a single-ended input; the part accepts LVDS, LVPECL, or LVCMOS inputs."+ },+ {+ "number": "10",+ "name": "N.C.",+ "type": "unconnected",+ "description": "No connect; this pin is not internally connected."+ },+ {+ "number": "11",+ "name": "VCC",+ "type": "power_in",+ "description": "2.5-V device supply; recommended range is 2.375 V to 2.625 V."+ },+ {+ "number": "12",+ "name": "OUTP0",+ "type": "output",+ "description": "Positive side of LVDS differential output pair 0, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "13",+ "name": "OUTN0",+ "type": "output",+ "description": "Negative side of LVDS differential output pair 0, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "14",+ "name": "OUTP1",+ "type": "output",+ "description": "Positive side of LVDS differential output pair 1, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "15",+ "name": "OUTN1",+ "type": "output",+ "description": "Negative side of LVDS differential output pair 1, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "16",+ "name": "OUTP2",+ "type": "output",+ "description": "Positive side of LVDS differential output pair 2, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "17",+ "name": "OUTN2",+ "type": "output",+ "description": "Negative side of LVDS differential output pair 2, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "18",+ "name": "OUTP3",+ "type": "output",+ "description": "Positive side of LVDS differential output pair 3, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "19",+ "name": "OUTN3",+ "type": "output",+ "description": "Negative side of LVDS differential output pair 3, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "20",+ "name": "VCC",+ "type": "power_in",+ "description": "2.5-V device supply; recommended range is 2.375 V to 2.625 V."+ },+ {+ "number": "21",+ "name": "GND",+ "type": "power_in",+ "description": "Device ground; must be connected to the thermal pad ground."+ },+ {+ "number": "22",+ "name": "OUTP4",+ "type": "output",+ "description": "Positive side of LVDS differential output pair 4, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "23",+ "name": "OUTN4",+ "type": "output",+ "description": "Negative side of LVDS differential output pair 4, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "24",+ "name": "OUTP5",+ "type": "output",+ "description": "Positive side of LVDS differential output pair 5, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "25",+ "name": "OUTN5",+ "type": "output",+ "description": "Negative side of LVDS differential output pair 5, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "26",+ "name": "OUTP6",+ "type": "output",+ "description": "Positive side of LVDS differential output pair 6, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "27",+ "name": "OUTN6",+ "type": "output",+ "description": "Negative side of LVDS differential output pair 6, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "28",+ "name": "OUTP7",+ "type": "output",+ "description": "Positive side of LVDS differential output pair 7, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "29",+ "name": "OUTN7",+ "type": "output",+ "description": "Negative side of LVDS differential output pair 7, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "30",+ "name": "GND",+ "type": "power_in",+ "description": "Device ground; must be connected to the thermal pad ground."+ },+ {+ "number": "31",+ "name": "VCC",+ "type": "power_in",+ "description": "2.5-V device supply; recommended range is 2.375 V to 2.625 V."+ },+ {+ "number": "32",+ "name": "OUTP8",+ "type": "output",+ "description": "Positive side of LVDS differential output pair 8, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "33",+ "name": "OUTN8",+ "type": "output",+ "description": "Negative side of LVDS differential output pair 8, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "34",+ "name": "OUTP9",+ "type": "output",+ "description": "Positive side of LVDS differential output pair 9, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "35",+ "name": "OUTN9",+ "type": "output",+ "description": "Negative side of LVDS differential output pair 9, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "36",+ "name": "OUTP10",+ "type": "output",+ "description": "Positive side of LVDS differential output pair 10, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "37",+ "name": "OUTN10",+ "type": "output",+ "description": "Negative side of LVDS differential output pair 10, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "38",+ "name": "OUTP11",+ "type": "output",+ "description": "Positive side of LVDS differential output pair 11, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "39",+ "name": "OUTN11",+ "type": "output",+ "description": "Negative side of LVDS differential output pair 11, ANSI EIA/TIA-644A compatible; the output can handle a permanent short."+ },+ {+ "number": "40",+ "name": "VCC",+ "type": "power_in",+ "description": "2.5-V device supply; recommended range is 2.375 V to 2.625 V."+ },+ {+ "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-5-5",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: The datasheet's thermal pad is listed in the Pin Functions table as '— Thermal Pad Ground' with no p; The pin diagram text on page 3 is garbled in the extraction; the pin list was taken from the Pin Fun; The Pin Functions table lists pins '9, 8' as 'INP0, INN0', so pin 8 is INN0 and pin 9 is INP0; this ",+ "exposed pad 41 added from the footprint"+ ],+ "pages_sent": 8,+ "cost_usd": 0.0789,+ "at": "2026-10-07T21:31:24"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/cdclvd1212",+ "pages": 26,+ "sha256": "5074ca131810290a",+ "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"+ },+ "models_3d": [+ {+ "file": "cdclvd1212rhar.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6,+ 6,+ 1+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "e5b4286c2329085d9ef7f90d5eb5bf41a435241ecc1baaf1383823b6d6a946ae",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "cdclvd1212rhar-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6,+ 6,+ 1+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "4bdb39889245c5c240c8dbbe3e0b5fd66506a007b4a0f77e9884c0dbc3d4ed87",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}