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74AVCH4T245RSVR-NT
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Texas Instruments Global Sourcing Parts, UQFN-16(2.6x1.8). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+54@@ -0,0 +1,54 @@+# 74AVCH4T245RSVR-NT++**Texas Instruments** · Global Sourcing Parts · UQFN-16(2.6x1.8)++74AVCH4T245RSVR-NT from Texas Instruments, in a UQFN-16(2.6x1.8). 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 for channel 1; low enables outputs selected by 1DIR, high places all 1-side outputs in high-impedance state, referenced to VCCA. |+| 2 | VCCB | power_in | B-side power supply voltage; 1.2V ≤ VCCB ≤ 3.6V. |+| 3 | VCCA | power_in | A-side power supply voltage and control logic supply; 1.2V ≤ VCCA ≤ 3.6V. |+| 4 | 1DIR | input | Direction-control input for channel 1; high selects A-to-B data transmission, low selects B-to-A transmission, referenced to VCCA. |+| 5 | 2DIR | input | Direction-control input for channel 2; high selects A-to-B data transmission, low selects B-to-A transmission, referenced to VCCA. |+| 6 | 1A1 | bidirectional | Bidirectional data I/O for channel 1, bit 1; referenced to VCCA. |+| 7 | 1A2 | bidirectional | Bidirectional data I/O for channel 1, bit 2; referenced to VCCA. |+| 8 | 2A1 | bidirectional | Bidirectional data I/O for channel 2, bit 1; referenced to VCCA. |+| 9 | 2A2 | bidirectional | Bidirectional data I/O for channel 2, bit 2; referenced to VCCA. |+| 10 | GND | power_in | Ground connection, power supply return. |+| 11 | GND | power_in | Ground connection, power supply return. |+| 12 | 2B2 | bidirectional | Bidirectional data I/O for channel 2, bit 2; referenced to VCCB. |+| 13 | 2B1 | bidirectional | Bidirectional data I/O for channel 2, bit 1; referenced to VCCB. |+| 14 | 1B2 | bidirectional | Bidirectional data I/O for channel 1, bit 2; referenced to VCCB. |+| 15 | 1B1 | bidirectional | Bidirectional data I/O for channel 1, bit 1; referenced to VCCB. |+| 16 | 2OE | input | Output-enable control for channel 2; low enables outputs selected by 2DIR, high places all 2-side outputs in high-impedance state, referenced to VCCA. |+| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | UQFN-16(2.6x1.8) |+| Category | Global Sourcing Parts |+| Pins | 17 |++## CAD (KiCad official)++- Symbol: `74AVCH4T245RSVR-NT`+- Footprint: `Package_DFN_QFN:QFN-16-1EP_1.8x2.6mm_P0.4mm_EP0.7x1.5mm`+- 3D model: UQFN-16(2.6x1.8), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal QFN 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: `74avch4t245rsvr-nt-etched.step` / `74avch4t245rsvr-nt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `74avch4t245rsvr-nt.step` / `74avch4t245rsvr-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/sn74avch4t245) (39 pp, sha256 `1e7d06a424ca6da2`, 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 0.2`, 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/74avch4t245rsvr-nt-datasheet.pdf)
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low enables outputs selected by 1DIR, high places all 1-side outputs in high-impedance state, referenced to VCCA."+ },+ {+ "number": "2",+ "name": "VCCB",+ "type": "power_in",+ "description": "B-side power supply voltage; 1.2V ≤ VCCB ≤ 3.6V."+ },+ {+ "number": "3",+ "name": "VCCA",+ "type": "power_in",+ "description": "A-side power supply voltage and control logic supply; 1.2V ≤ VCCA ≤ 3.6V."+ },+ {+ "number": "4",+ "name": "1DIR",+ "type": "input",+ "description": "Direction-control input for channel 1; high selects A-to-B data transmission, low selects B-to-A transmission, referenced to VCCA."+ },+ {+ "number": "5",+ "name": "2DIR",+ "type": "input",+ "description": "Direction-control input for channel 2; high selects A-to-B data transmission, low selects B-to-A transmission, referenced to VCCA."+ },+ {+ "number": "6",+ "name": "1A1",+ "type": "bidirectional",+ "description": "Bidirectional data I/O for channel 1, bit 1; referenced to VCCA."+ },+ {+ "number": "7",+ "name": "1A2",+ "type": "bidirectional",+ "description": "Bidirectional data I/O for channel 1, bit 2; referenced to VCCA."+ },+ {+ "number": "8",+ "name": "2A1",+ "type": "bidirectional",+ "description": "Bidirectional data I/O for channel 2, bit 1; referenced to VCCA."+ },+ {+ "number": "9",+ "name": "2A2",+ "type": "bidirectional",+ "description": "Bidirectional data I/O for channel 2, bit 2; referenced to VCCA."+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Ground connection, power supply return."+ },+ {+ "number": "11",+ "name": "GND",+ "type": "power_in",+ "description": "Ground connection, power supply return."+ },+ {+ "number": "12",+ "name": "2B2",+ "type": "bidirectional",+ "description": "Bidirectional data I/O for channel 2, bit 2; referenced to VCCB."+ },+ {+ "number": "13",+ "name": "2B1",+ "type": "bidirectional",+ "description": "Bidirectional data I/O for channel 2, bit 1; referenced to VCCB."+ },+ {+ "number": "14",+ "name": "1B2",+ "type": "bidirectional",+ "description": "Bidirectional data I/O for channel 1, bit 2; referenced to VCCB."+ },+ {+ "number": "15",+ "name": "1B1",+ "type": "bidirectional",+ "description": "Bidirectional data I/O for channel 1, bit 1; referenced to VCCB."+ },+ {+ "number": "16",+ "name": "2OE",+ "type": "input",+ "description": "Output-enable control for channel 2; low enables outputs selected by 2DIR, high places all 2-side outputs in high-impedance state, referenced to VCCA."+ },+ {+ "number": "17",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "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": 39,+ "cost_usd": 0.2537,+ "at": "2026-10-01T17:20:05"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/sn74avch4t245",+ "pages": 39,+ "sha256": "1e7d06a424ca6da2",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 17,+ "described": 17,+ "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]"+ }+}