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74AVC4T245RSVR-NT
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Texas Instruments Buffers, Drivers, Receivers, Transceivers, UQFN-16(1.8x2.6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+53@@ -0,0 +1,53 @@+# 74AVC4T245RSVR-NT++**Texas Instruments** · Buffers, Drivers, Receivers, Transceivers · UQFN-16(1.8x2.6)++74AVC4T245RSVR-NT from Texas Instruments, in a UQFN-16(1.8x2.6). 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 | 1OE | input | Output-enable control input for 1-port; pull high to place outputs in 3-state mode; referenced to VCCA |+| 2 | VCCB | power_in | B-port power supply voltage; operating range 1.2V to 3.6V for bus transceiver operation |+| 3 | VCCA | power_in | A-port power supply voltage; operating range 1.2V to 3.6V for bus transceiver operation |+| 4 | 1DIR | input | Direction-control input for 1-port; logic level selects data flow direction between A and B buses |+| 5 | 2DIR | input | Direction-control input for 2-port; logic level selects data flow direction between A and B buses |+| 6 | 1A1 | bidirectional | Bidirectional data I/O port 1A1 referenced to VCCA; ±50mA continuous source/sink current capability |+| 7 | 1A2 | bidirectional | Bidirectional data I/O port 1A2 referenced to VCCA; ±50mA continuous source/sink current capability |+| 8 | 2A1 | bidirectional | Bidirectional data I/O port 2A1 referenced to VCCA; ±50mA continuous source/sink current capability |+| 9 | 2A2 | bidirectional | Bidirectional data I/O port 2A2 referenced to VCCA; ±50mA continuous source/sink current capability |+| 10 | GND | power_in | Ground; power return connection for device and I/O circuits |+| 11 | GND | power_in | Ground; power return connection for device and I/O circuits |+| 12 | 2B2 | bidirectional | Bidirectional data I/O port 2B2 referenced to VCCB; ±50mA continuous source/sink current capability |+| 13 | 2B1 | bidirectional | Bidirectional data I/O port 2B1 referenced to VCCB; ±50mA continuous source/sink current capability |+| 14 | 1B2 | bidirectional | Bidirectional data I/O port 1B2 referenced to VCCB; ±50mA continuous source/sink current capability |+| 15 | 1B1 | bidirectional | Bidirectional data I/O port 1B1 referenced to VCCB; ±50mA continuous source/sink current capability |+| 16 | 2OE | input | Output-enable control input for 2-port; pull high to place outputs in 3-state mode; referenced to VCCA |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | UQFN-16(1.8x2.6) |+| Category | Logic |+| Pins | 16 |++## CAD (KiCad official)++- Symbol: `74AVC4T245RSVR-NT`+- Footprint: `Package_DFN_QFN:UQFN-16_1.8x2.6mm_P0.4mm`+- 3D model: UQFN-16(1.8x2.6), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.55 mm nominal UFQFPN height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)+- 3D model files: `74avc4t245rsvr-nt-etched.step` / `74avc4t245rsvr-nt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `74avc4t245rsvr-nt.step` / `74avc4t245rsvr-nt.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/sn74avc4t245) (46 pp, sha256 `f6beb9b37f6eb53c`, retrieved 2026-10-01, 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/74avc4t245rsvr-nt-datasheet.pdf)
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pull high to place outputs in 3-state mode; referenced to VCCA"+ },+ {+ "number": "2",+ "name": "VCCB",+ "type": "power_in",+ "description": "B-port power supply voltage; operating range 1.2V to 3.6V for bus transceiver operation"+ },+ {+ "number": "3",+ "name": "VCCA",+ "type": "power_in",+ "description": "A-port power supply voltage; operating range 1.2V to 3.6V for bus transceiver operation"+ },+ {+ "number": "4",+ "name": "1DIR",+ "type": "input",+ "description": "Direction-control input for 1-port; logic level selects data flow direction between A and B buses"+ },+ {+ "number": "5",+ "name": "2DIR",+ "type": "input",+ "description": "Direction-control input for 2-port; logic level selects data flow direction between A and B buses"+ },+ {+ "number": "6",+ "name": "1A1",+ "type": "bidirectional",+ "description": "Bidirectional data I/O port 1A1 referenced to VCCA; ±50mA continuous source/sink current capability"+ },+ {+ "number": "7",+ "name": "1A2",+ "type": "bidirectional",+ "description": "Bidirectional data I/O port 1A2 referenced to VCCA; ±50mA continuous source/sink current capability"+ },+ {+ "number": "8",+ "name": "2A1",+ "type": "bidirectional",+ "description": "Bidirectional data I/O port 2A1 referenced to VCCA; ±50mA continuous source/sink current capability"+ },+ {+ "number": "9",+ "name": "2A2",+ "type": "bidirectional",+ "description": "Bidirectional data I/O port 2A2 referenced to VCCA; ±50mA continuous source/sink current capability"+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Ground; power return connection for device and I/O circuits"+ },+ {+ "number": "11",+ "name": "GND",+ "type": "power_in",+ "description": "Ground; power return connection for device and I/O circuits"+ },+ {+ "number": "12",+ "name": "2B2",+ "type": "bidirectional",+ "description": "Bidirectional data I/O port 2B2 referenced to VCCB; ±50mA continuous source/sink current capability"+ },+ {+ "number": "13",+ "name": "2B1",+ "type": "bidirectional",+ "description": "Bidirectional data I/O port 2B1 referenced to VCCB; ±50mA continuous source/sink current capability"+ },+ {+ "number": "14",+ "name": "1B2",+ "type": "bidirectional",+ "description": "Bidirectional data I/O port 1B2 referenced to VCCB; ±50mA continuous source/sink current capability"+ },+ {+ "number": "15",+ "name": "1B1",+ "type": "bidirectional",+ "description": "Bidirectional data I/O port 1B1 referenced to VCCB; ±50mA continuous source/sink current capability"+ },+ {+ "number": "16",+ "name": "2OE",+ "type": "input",+ "description": "Output-enable control input for 2-port; pull high to place outputs in 3-state mode; referenced to VCCA"+ }+ ],+ "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": 10,+ "cost_usd": 0.2342,+ "at": "2026-10-01T18:38:20"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/sn74avc4t245",+ "pages": 46,+ "sha256": "f6beb9b37f6eb53c",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 16,+ "described": 16,+ "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]"+ }+}