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SN74AHCT245PWR
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Texas Instruments Buffer/Driver/Transceiver, TSSOP-20. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+78@@ -0,0 +1,78 @@+# SN74AHCT245PWR++**Texas Instruments** · Buffer/Driver/Transceiver · TSSOP-20++SN74AHCT245PWR from Texas Instruments, in a TSSOP-20. 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 | DIR | input | Direction control input. DIR=L transfers B->A; DIR=H transfers A->B (when OE is low). |+| 2 | A1 | bidirectional | Channel 1 A-side bus I/O. Direction set by DIR; high-Z when OE is high. |+| 3 | A2 | bidirectional | Channel 2 A-side bus I/O. |+| 4 | A3 | bidirectional | Channel 3 A-side bus I/O. |+| 5 | A4 | bidirectional | Channel 4 A-side bus I/O. |+| 6 | A5 | bidirectional | Channel 5 A-side bus I/O. |+| 7 | A6 | bidirectional | Channel 6 A-side bus I/O. |+| 8 | A7 | bidirectional | Channel 7 A-side bus I/O. |+| 9 | A8 | bidirectional | Channel 8 A-side bus I/O. |+| 10 | GND | power_in | Ground reference (0 V). |+| 11 | B8 | bidirectional | Channel 8 B-side bus I/O. |+| 12 | B7 | bidirectional | Channel 7 B-side bus I/O. |+| 13 | B6 | bidirectional | Channel 6 B-side bus I/O. |+| 14 | B5 | bidirectional | Channel 5 B-side bus I/O. |+| 15 | B4 | bidirectional | Channel 4 B-side bus I/O. |+| 16 | B3 | bidirectional | Channel 3 B-side bus I/O. |+| 17 | B2 | bidirectional | Channel 2 B-side bus I/O. |+| 18 | B1 | bidirectional | Channel 1 B-side bus I/O. |+| 19 | OE | input | Active-low output enable. When OE is high, both A and B buses are placed in the high-impedance (isolation) state. Should be tied to VCC through a pullup during power up/down. |+| 20 | VCC | power_in | Positive supply, 4.5 V to 5.5 V recommended (7 V absolute max). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-20 |+| Category | Logic |+| Pins | 20 |++## Ordering variants++- `SN74AHCT245PWRPW`+- `SN74AHCT245PWRPWR`+- `SN74AHCT245PWRDB`+- `SN74AHCT245PWRDBR`+- `SN74AHCT245PWRDGV`+- `SN74AHCT245PWRDGVR`+- `SN74AHCT245PWRDW`+- `SN74AHCT245PWRDWR`+- `SN74AHCT245PWRN`+- `SN74AHCT245PWRNS`+- `SN74AHCT245PWRNSR`+- `SN74AHCT245PWRDGS`+- `SN74AHCT245PWRDGSR`+- `SN74AHCT245PWRRGY`+- `SN74AHCT245PWRRGYR`+- `SN74AHCT245PWRRKS`+- `SN74AHCT245PWRRKSR`+- `SN74AHCT245PWRJ`+- `SN74AHCT245PWRW`+- `SN74AHCT245PWRFK`++## CAD (KiCad official)++- Symbol: `SN74AHCT245PWR`+- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`+- 3D model: TSSOP-20 (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/sn74ahct245.pdf) (44 pp, sha256 `9e7c1b200cdefd3d`, 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/sn74ahct245pwr-datasheet.pdf)
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