74vhc245ft

@@ -0,0 +1,59 @@+# 74VHC245FT++**TOSHIBA 74VHC245FT BE** · Buffer/Driver/Transceiver · TSSOP-20++74VHC245FT from TOSHIBA 74VHC245FT BE, 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. When DIR = L, data flows B -> A; when DIR = H, data flows A -> B. CMOS input, VIH = VCC x 0.7 min at VCC = 3.0-5.5 V. |+| 2 | A1 | bidirectional | Bus A channel 1 I/O. Acts as input when DIR = H (A -> B) and as output when DIR = L (B -> A). Placed into high-impedance state when /G = H. |+| 3 | A2 | bidirectional | Bus A channel 2 I/O. Acts as input when DIR = H and as output when DIR = L. High-impedance when /G = H. |+| 4 | A3 | bidirectional | Bus A channel 3 I/O. Acts as input when DIR = H and as output when DIR = L. High-impedance when /G = H. |+| 5 | A4 | bidirectional | Bus A channel 4 I/O. Acts as input when DIR = H and as output when DIR = L. High-impedance when /G = H. |+| 6 | A5 | bidirectional | Bus A channel 5 I/O. Acts as input when DIR = H and as output when DIR = L. High-impedance when /G = H. |+| 7 | A6 | bidirectional | Bus A channel 6 I/O. Acts as input when DIR = H and as output when DIR = L. High-impedance when /G = H. |+| 8 | A7 | bidirectional | Bus A channel 7 I/O. Acts as input when DIR = H and as output when DIR = L. High-impedance when /G = H. |+| 9 | A8 | bidirectional | Bus A channel 8 I/O. Acts as input when DIR = H and as output when DIR = L. High-impedance when /G = H. |+| 10 | GND | power_in | Ground reference (0 V). Connect to system ground with a local decoupling capacitor between VCC and GND close to the package. |+| 11 | B8 | bidirectional | Bus B channel 8 I/O. Acts as input when DIR = L (B -> A) and as output when DIR = H (A -> B). High-impedance when /G = H. |+| 12 | B7 | bidirectional | Bus B channel 7 I/O. Acts as input when DIR = L and as output when DIR = H. High-impedance when /G = H. |+| 13 | B6 | bidirectional | Bus B channel 6 I/O. Acts as input when DIR = L and as output when DIR = H. High-impedance when /G = H. |+| 14 | B5 | bidirectional | Bus B channel 5 I/O. Acts as input when DIR = L and as output when DIR = H. High-impedance when /G = H. |+| 15 | B4 | bidirectional | Bus B channel 4 I/O. Acts as input when DIR = L and as output when DIR = H. High-impedance when /G = H. |+| 16 | B3 | bidirectional | Bus B channel 3 I/O. Acts as input when DIR = L and as output when DIR = H. High-impedance when /G = H. |+| 17 | B2 | bidirectional | Bus B channel 2 I/O. Acts as input when DIR = L and as output when DIR = H. High-impedance when /G = H. |+| 18 | B1 | bidirectional | Bus B channel 1 I/O. Acts as input when DIR = L and as output when DIR = H. High-impedance when /G = H. |+| 19 | ~G | input | Active-low output enable. When /G = L the transceiver is enabled and data is passed in the direction set by DIR; when /G = H both A and B busses go to high-impedance (Z). |+| 20 | VCC | power_in | Positive supply voltage. Operating range 2.0 V to 5.5 V (absolute max 7.0 V). Decouple with a 0.1 uF ceramic capacitor close to the package between VCC and GND. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | TOSHIBA 74VHC245FT BE |+| Package | TSSOP-20 |+| Category | Logic |+| Pins | 20 |++## Ordering variants++- `74VHC245FT`++## CAD (KiCad official)++- Symbol: `74VHC245FT`+- 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:** [TOSHIBA 74VHC245FT BE datasheet](docs/74vhc245ft-datasheet.pdf) (None pp, sha256 `666229d4098c7197`, retrieved 2026-08-17, tier: lcsc)+- **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/74vhc245ft-datasheet.pdf)

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