SN74AVC1T45DCKR

@@ -0,0 +1,52 @@+# SN74AVC1T45DCKR++**Texas Instruments** · 74 Series · SC-70-6++SN74AVC1T45DCKR from Texas Instruments, in a SC-70-6. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | VCCA | power_in | A-port supply voltage. Sets the logic level for the A side. Operating range 1.2 V ≤ VCCA ≤ 3.6 V. Bypass locally with a ceramic capacitor. |+| 2 | GND | power_in | Device ground reference for both supply rails. |+| 3 | A | bidirectional | A-side data I/O, referenced to VCCA. Acts as input when DIR = HIGH (A→B) and as output when DIR = LOW (B→A). Typical drive ±12 mA at 3.3 V; I/Os are 4.6 V tolerant. |+| 4 | B | bidirectional | B-side data I/O, referenced to VCCB. Acts as output when DIR = HIGH (A→B) and as input when DIR = LOW (B→A). Typical drive ±12 mA at 3.3 V; I/Os are 4.6 V tolerant. |+| 5 | DIR | input | Direction control signal, referenced to VCCA. DIR = HIGH transmits A→B; DIR = LOW transmits B→A. Powered by VCCA. |+| 6 | VCCB | power_in | B-port supply voltage. Sets the logic level for the B side. Operating range 1.2 V ≤ VCCB ≤ 3.6 V. If either VCCA or VCCB is at GND, both ports enter high-impedance (VCC isolation). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SC-70-6 |+| Category | Logic ICs |+| Pins | 6 |++## Ordering variants++Same part, different packaging or reel option.++- `SN74AVC1T45DCKR`+- `SN74AVC1T45DCKRDCKT`+- `SN74AVC1T45DCKRDBVR`+- `SN74AVC1T45DCKRDBVT`+- `SN74AVC1T45DCKRDRLR`+- `SN74AVC1T45DCKRYZPR`++## CAD (KiCad official)++- Symbol: `SN74AVC1T45DCKR`+- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`+- 3D model: SC-70-6 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/sn74avc1t45.pdf) (42 pp, sha256 `de9ae63b763d0829`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/sn74avc1t45dckr-datasheet.pdf)

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