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SN74CB3T16211DLR
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Texas Instruments Analog Switches, Multiplexers, SSOP-56-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+92@@ -0,0 +1,92 @@+# SN74CB3T16211DLR++**Texas Instruments** · Analog Switches, Multiplexers · SSOP-56-300mil++SN74CB3T16211DLR from Texas Instruments, in a SSOP-56-300mil. 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 | NC | unconnected | No internal connection. |+| 2 | 1A1 | bidirectional | Bus 1 A-port data I/O 1, connected to 1B1 when 1OE is low; supports 0 to 5.5 V signaling. |+| 3 | 1A2 | bidirectional | Bus 1 A-port data I/O 2, connected to 1B2 when 1OE is low; supports 0 to 5.5 V signaling. |+| 4 | 1A3 | bidirectional | Bus 1 A-port data I/O 3, connected to 1B3 when 1OE is low; supports 0 to 5.5 V signaling. |+| 5 | 1A4 | bidirectional | Bus 1 A-port data I/O 4, connected to 1B4 when 1OE is low; supports 0 to 5.5 V signaling. |+| 6 | 1A5 | bidirectional | Bus 1 A-port data I/O 5, connected to 1B5 when 1OE is low; supports 0 to 5.5 V signaling. |+| 7 | 1A6 | bidirectional | Bus 1 A-port data I/O 6, connected to 1B6 when 1OE is low; supports 0 to 5.5 V signaling. |+| 8 | GND | power_in | Ground. |+| 9 | 1A7 | bidirectional | Bus 1 A-port data I/O 7, connected to 1B7 when 1OE is low; supports 0 to 5.5 V signaling. |+| 10 | 1A8 | bidirectional | Bus 1 A-port data I/O 8, connected to 1B8 when 1OE is low; supports 0 to 5.5 V signaling. |+| 11 | 1A9 | bidirectional | Bus 1 A-port data I/O 9, connected to 1B9 when 1OE is low; supports 0 to 5.5 V signaling. |+| 12 | 1A10 | bidirectional | Bus 1 A-port data I/O 10, connected to 1B10 when 1OE is low; supports 0 to 5.5 V signaling. |+| 13 | 1A11 | bidirectional | Bus 1 A-port data I/O 11, connected to 1B11 when 1OE is low; supports 0 to 5.5 V signaling. |+| 14 | 1A12 | bidirectional | Bus 1 A-port data I/O 12, connected to 1B12 when 1OE is low; supports 0 to 5.5 V signaling. |+| 15 | 2A1 | bidirectional | Bus 2 A-port data I/O 1, connected to 2B1 when 2OE is low; supports 0 to 5.5 V signaling. |+| 16 | 2A2 | bidirectional | Bus 2 A-port data I/O 2, connected to 2B2 when 2OE is low; supports 0 to 5.5 V signaling. |+| 17 | VCC | power_in | Supply voltage, 2.3 V to 3.6 V operating range. |+| 18 | 2A3 | bidirectional | Bus 2 A-port data I/O 3, connected to 2B3 when 2OE is low; supports 0 to 5.5 V signaling. |+| 19 | GND | power_in | Ground. |+| 20 | 2A4 | bidirectional | Bus 2 A-port data I/O 4, connected to 2B4 when 2OE is low; supports 0 to 5.5 V signaling. |+| 21 | 2A5 | bidirectional | Bus 2 A-port data I/O 5, connected to 2B5 when 2OE is low; supports 0 to 5.5 V signaling. |+| 22 | 2A6 | bidirectional | Bus 2 A-port data I/O 6, connected to 2B6 when 2OE is low; supports 0 to 5.5 V signaling. |+| 23 | 2A7 | bidirectional | Bus 2 A-port data I/O 7, connected to 2B7 when 2OE is low; supports 0 to 5.5 V signaling. |+| 24 | 2A8 | bidirectional | Bus 2 A-port data I/O 8, connected to 2B8 when 2OE is low; supports 0 to 5.5 V signaling. |+| 25 | 2A9 | bidirectional | Bus 2 A-port data I/O 9, connected to 2B9 when 2OE is low; supports 0 to 5.5 V signaling. |+| 26 | 2A10 | bidirectional | Bus 2 A-port data I/O 10, connected to 2B10 when 2OE is low; supports 0 to 5.5 V signaling. |+| 27 | 2A11 | bidirectional | Bus 2 A-port data I/O 11, connected to 2B11 when 2OE is low; supports 0 to 5.5 V signaling. |+| 28 | 2A12 | bidirectional | Bus 2 A-port data I/O 12, connected to 2B12 when 2OE is low; supports 0 to 5.5 V signaling. |+| 29 | 2B12 | bidirectional | Bus 2 B-port data I/O 12, connected to 2A12 when 2OE is low; supports 0 to 5.5 V signaling. |+| 30 | 2B11 | bidirectional | Bus 2 B-port data I/O 11, connected to 2A11 when 2OE is low; supports 0 to 5.5 V signaling. |+| 31 | 2B10 | bidirectional | Bus 2 B-port data I/O 10, connected to 2A10 when 2OE is low; supports 0 to 5.5 V signaling. |+| 32 | 2B9 | bidirectional | Bus 2 B-port data I/O 9, connected to 2A9 when 2OE is low; supports 0 to 5.5 V signaling. |+| 33 | 2B8 | bidirectional | Bus 2 B-port data I/O 8, connected to 2A8 when 2OE is low; supports 0 to 5.5 V signaling. |+| 34 | 2B7 | bidirectional | Bus 2 B-port data I/O 7, connected to 2A7 when 2OE is low; supports 0 to 5.5 V signaling. |+| 35 | 2B6 | bidirectional | Bus 2 B-port data I/O 6, connected to 2A6 when 2OE is low; supports 0 to 5.5 V signaling. |+| 36 | 2B5 | bidirectional | Bus 2 B-port data I/O 5, connected to 2A5 when 2OE is low; supports 0 to 5.5 V signaling. |+| 37 | 2B4 | bidirectional | Bus 2 B-port data I/O 4, connected to 2A4 when 2OE is low; supports 0 to 5.5 V signaling. |+| 38 | GND | power_in | Ground. |+| 39 | 2B3 | bidirectional | Bus 2 B-port data I/O 3, connected to 2A3 when 2OE is low; supports 0 to 5.5 V signaling. |+| 40 | 2B2 | bidirectional | Bus 2 B-port data I/O 2, connected to 2A2 when 2OE is low; supports 0 to 5.5 V signaling. |+| 41 | 2B1 | bidirectional | Bus 2 B-port data I/O 1, connected to 2A1 when 2OE is low; supports 0 to 5.5 V signaling. |+| 42 | 1B12 | bidirectional | Bus 1 B-port data I/O 12, connected to 1A12 when 1OE is low; supports 0 to 5.5 V signaling. |+| 43 | 1B11 | bidirectional | Bus 1 B-port data I/O 11, connected to 1A11 when 1OE is low; supports 0 to 5.5 V signaling. |+| 44 | 1B10 | bidirectional | Bus 1 B-port data I/O 10, connected to 1A10 when 1OE is low; supports 0 to 5.5 V signaling. |+| 45 | 1B9 | bidirectional | Bus 1 B-port data I/O 9, connected to 1A9 when 1OE is low; supports 0 to 5.5 V signaling. |+| 46 | 1B8 | bidirectional | Bus 1 B-port data I/O 8, connected to 1A8 when 1OE is low; supports 0 to 5.5 V signaling. |+| 47 | 1B7 | bidirectional | Bus 1 B-port data I/O 7, connected to 1A7 when 1OE is low; supports 0 to 5.5 V signaling. |+| 48 | 1B6 | bidirectional | Bus 1 B-port data I/O 6, connected to 1A6 when 1OE is low; supports 0 to 5.5 V signaling. |+| 49 | GND | power_in | Ground. |+| 50 | 1B5 | bidirectional | Bus 1 B-port data I/O 5, connected to 1A5 when 1OE is low; supports 0 to 5.5 V signaling. |+| 51 | 1B4 | bidirectional | Bus 1 B-port data I/O 4, connected to 1A4 when 1OE is low; supports 0 to 5.5 V signaling. |+| 52 | 1B3 | bidirectional | Bus 1 B-port data I/O 3, connected to 1A3 when 1OE is low; supports 0 to 5.5 V signaling. |+| 53 | 1B2 | bidirectional | Bus 1 B-port data I/O 2, connected to 1A2 when 1OE is low; supports 0 to 5.5 V signaling. |+| 54 | 1B1 | bidirectional | Bus 1 B-port data I/O 1, connected to 1A1 when 1OE is low; supports 0 to 5.5 V signaling. |+| 55 | 2OE | input | Output enable for the second 12-bit bus switch; low turns it ON, high gives high-impedance between A and B (VIH 2 V to 5.5 V at VCC 2.7-3.6 V). |+| 56 | 1OE | input | Output enable for the first 12-bit bus switch; low turns it ON, high gives high-impedance between A and B (VIH 2 V to 5.5 V at VCC 2.7-3.6 V). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SSOP-56-300mil |+| Category | Interface |+| Pins | 56 |++## CAD (KiCad official)++- Symbol: `SN74CB3T16211DLR`+- Footprint: `Package_SO:SSOP-56_7.5x18.5mm_P0.635mm`+- 3D model: SSOP-56-300mil (KiCad packages3D, STEP)+- 3D model files: `sn74cb3t16211dlr-etched.step` / `sn74cb3t16211dlr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74cb3t16211dlr.step` / `sn74cb3t16211dlr.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/sn74cb3t16211) (22 pp, sha256 `00303f785fd29976`, retrieved 2026-10-07, tier: lcsc)+- **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/sn74cb3t16211dlr-datasheet.pdf)
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supports 0 to 5.5 V signaling."+ },+ {+ "number": "3",+ "name": "1A2",+ "type": "bidirectional",+ "description": "Bus 1 A-port data I/O 2, connected to 1B2 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "4",+ "name": "1A3",+ "type": "bidirectional",+ "description": "Bus 1 A-port data I/O 3, connected to 1B3 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "5",+ "name": "1A4",+ "type": "bidirectional",+ "description": "Bus 1 A-port data I/O 4, connected to 1B4 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "6",+ "name": "1A5",+ "type": "bidirectional",+ "description": "Bus 1 A-port data I/O 5, connected to 1B5 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "7",+ "name": "1A6",+ "type": "bidirectional",+ "description": "Bus 1 A-port data I/O 6, connected to 1B6 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "8",+ "name": "GND",+ "type": "power_in",+ "description": "Ground."+ },+ {+ "number": "9",+ "name": "1A7",+ "type": "bidirectional",+ "description": "Bus 1 A-port data I/O 7, connected to 1B7 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "10",+ "name": "1A8",+ "type": "bidirectional",+ "description": "Bus 1 A-port data I/O 8, connected to 1B8 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "11",+ "name": "1A9",+ "type": "bidirectional",+ "description": "Bus 1 A-port data I/O 9, connected to 1B9 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "12",+ "name": "1A10",+ "type": "bidirectional",+ "description": "Bus 1 A-port data I/O 10, connected to 1B10 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "13",+ "name": "1A11",+ "type": "bidirectional",+ "description": "Bus 1 A-port data I/O 11, connected to 1B11 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "14",+ "name": "1A12",+ "type": "bidirectional",+ "description": "Bus 1 A-port data I/O 12, connected to 1B12 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "15",+ "name": "2A1",+ "type": "bidirectional",+ "description": "Bus 2 A-port data I/O 1, connected to 2B1 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "16",+ "name": "2A2",+ "type": "bidirectional",+ "description": "Bus 2 A-port data I/O 2, connected to 2B2 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "17",+ "name": "VCC",+ "type": "power_in",+ "description": "Supply voltage, 2.3 V to 3.6 V operating range."+ },+ {+ "number": "18",+ "name": "2A3",+ "type": "bidirectional",+ "description": "Bus 2 A-port data I/O 3, connected to 2B3 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "19",+ "name": "GND",+ "type": "power_in",+ "description": "Ground."+ },+ {+ "number": "20",+ "name": "2A4",+ "type": "bidirectional",+ "description": "Bus 2 A-port data I/O 4, connected to 2B4 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "21",+ "name": "2A5",+ "type": "bidirectional",+ "description": "Bus 2 A-port data I/O 5, connected to 2B5 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "22",+ "name": "2A6",+ "type": "bidirectional",+ "description": "Bus 2 A-port data I/O 6, connected to 2B6 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "23",+ "name": "2A7",+ "type": "bidirectional",+ "description": "Bus 2 A-port data I/O 7, connected to 2B7 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "24",+ "name": "2A8",+ "type": "bidirectional",+ "description": "Bus 2 A-port data I/O 8, connected to 2B8 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "25",+ "name": "2A9",+ "type": "bidirectional",+ "description": "Bus 2 A-port data I/O 9, connected to 2B9 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "26",+ "name": "2A10",+ "type": "bidirectional",+ "description": "Bus 2 A-port data I/O 10, connected to 2B10 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "27",+ "name": "2A11",+ "type": "bidirectional",+ "description": "Bus 2 A-port data I/O 11, connected to 2B11 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "28",+ "name": "2A12",+ "type": "bidirectional",+ "description": "Bus 2 A-port data I/O 12, connected to 2B12 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "29",+ "name": "2B12",+ "type": "bidirectional",+ "description": "Bus 2 B-port data I/O 12, connected to 2A12 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "30",+ "name": "2B11",+ "type": "bidirectional",+ "description": "Bus 2 B-port data I/O 11, connected to 2A11 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "31",+ "name": "2B10",+ "type": "bidirectional",+ "description": "Bus 2 B-port data I/O 10, connected to 2A10 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "32",+ "name": "2B9",+ "type": "bidirectional",+ "description": "Bus 2 B-port data I/O 9, connected to 2A9 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "33",+ "name": "2B8",+ "type": "bidirectional",+ "description": "Bus 2 B-port data I/O 8, connected to 2A8 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "34",+ "name": "2B7",+ "type": "bidirectional",+ "description": "Bus 2 B-port data I/O 7, connected to 2A7 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "35",+ "name": "2B6",+ "type": "bidirectional",+ "description": "Bus 2 B-port data I/O 6, connected to 2A6 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "36",+ "name": "2B5",+ "type": "bidirectional",+ "description": "Bus 2 B-port data I/O 5, connected to 2A5 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "37",+ "name": "2B4",+ "type": "bidirectional",+ "description": "Bus 2 B-port data I/O 4, connected to 2A4 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "38",+ "name": "GND",+ "type": "power_in",+ "description": "Ground."+ },+ {+ "number": "39",+ "name": "2B3",+ "type": "bidirectional",+ "description": "Bus 2 B-port data I/O 3, connected to 2A3 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "40",+ "name": "2B2",+ "type": "bidirectional",+ "description": "Bus 2 B-port data I/O 2, connected to 2A2 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "41",+ "name": "2B1",+ "type": "bidirectional",+ "description": "Bus 2 B-port data I/O 1, connected to 2A1 when 2OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "42",+ "name": "1B12",+ "type": "bidirectional",+ "description": "Bus 1 B-port data I/O 12, connected to 1A12 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "43",+ "name": "1B11",+ "type": "bidirectional",+ "description": "Bus 1 B-port data I/O 11, connected to 1A11 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "44",+ "name": "1B10",+ "type": "bidirectional",+ "description": "Bus 1 B-port data I/O 10, connected to 1A10 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "45",+ "name": "1B9",+ "type": "bidirectional",+ "description": "Bus 1 B-port data I/O 9, connected to 1A9 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "46",+ "name": "1B8",+ "type": "bidirectional",+ "description": "Bus 1 B-port data I/O 8, connected to 1A8 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "47",+ "name": "1B7",+ "type": "bidirectional",+ "description": "Bus 1 B-port data I/O 7, connected to 1A7 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "48",+ "name": "1B6",+ "type": "bidirectional",+ "description": "Bus 1 B-port data I/O 6, connected to 1A6 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "49",+ "name": "GND",+ "type": "power_in",+ "description": "Ground."+ },+ {+ "number": "50",+ "name": "1B5",+ "type": "bidirectional",+ "description": "Bus 1 B-port data I/O 5, connected to 1A5 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "51",+ "name": "1B4",+ "type": "bidirectional",+ "description": "Bus 1 B-port data I/O 4, connected to 1A4 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "52",+ "name": "1B3",+ "type": "bidirectional",+ "description": "Bus 1 B-port data I/O 3, connected to 1A3 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "53",+ "name": "1B2",+ "type": "bidirectional",+ "description": "Bus 1 B-port data I/O 2, connected to 1A2 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "54",+ "name": "1B1",+ "type": "bidirectional",+ "description": "Bus 1 B-port data I/O 1, connected to 1A1 when 1OE is low; supports 0 to 5.5 V signaling."+ },+ {+ "number": "55",+ "name": "2OE",+ "type": "input",+ "description": "Output enable for the second 12-bit bus switch; low turns it ON, high gives high-impedance between A and B (VIH 2 V to 5.5 V at VCC 2.7-3.6 V)."+ },+ {+ "number": "56",+ "name": "1OE",+ "type": "input",+ "description": "Output enable for the first 12-bit bus switch; low turns it ON, high gives high-impedance between A and B (VIH 2 V to 5.5 V at VCC 2.7-3.6 V)."+ }+ ],+ "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": [],+ "pages_sent": 22,+ "cost_usd": 0.2178,+ "at": "2026-10-07T02:30:05"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/sn74cb3t16211",+ "pages": 22,+ "sha256": "00303f785fd29976",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 56,+ "described": 56,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "sn74cb3t16211dlr.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 10.35,+ 18.5,+ 2.99+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "496b138c9bddb6111fccc97928b5e654846ac39b68862745293b24c720d158e5",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "sn74cb3t16211dlr-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 10.35,+ 18.5,+ 2.99+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "2becf89ac0fbf2a787e8fb4c68f465ca1369c25d2ce0477f6aae3df5eb8c25fb",+ "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]"+ }+}