74LVC245AT20-13

@@ -0,0 +1,62 @@+# 74LVC245AT20-13++**Diodes Incorporated** · Buffer/Driver/Transceiver · TSSOP-20++74LVC245AT20-13 from Diodes Incorporated, 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 LOW, data flows from B bus to A bus; when HIGH, data flows from A bus to B bus. Schmitt-trigger input, tolerant to 5.5V. |+| 2 | A1 | bidirectional | A-bus data I/O bit 1. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V. |+| 3 | A2 | bidirectional | A-bus data I/O bit 2. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V. |+| 4 | A3 | bidirectional | A-bus data I/O bit 3. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V. |+| 5 | A4 | bidirectional | A-bus data I/O bit 4. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V. |+| 6 | A5 | bidirectional | A-bus data I/O bit 5. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V. |+| 7 | A6 | bidirectional | A-bus data I/O bit 6. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V. |+| 8 | A7 | bidirectional | A-bus data I/O bit 7. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V. |+| 9 | A8 | bidirectional | A-bus data I/O bit 8. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V. |+| 10 | GND | power_in | Ground reference (0 V). Continuous sink current through GND rated at -100 mA maximum. |+| 11 | B8 | bidirectional | B-bus data I/O bit 8. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V. |+| 12 | B7 | bidirectional | B-bus data I/O bit 7. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V. |+| 13 | B6 | bidirectional | B-bus data I/O bit 6. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V. |+| 14 | B5 | bidirectional | B-bus data I/O bit 5. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V. |+| 15 | B4 | bidirectional | B-bus data I/O bit 4. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V. |+| 16 | B3 | bidirectional | B-bus data I/O bit 3. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V. |+| 17 | B2 | bidirectional | B-bus data I/O bit 2. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V. |+| 18 | B1 | bidirectional | B-bus data I/O bit 1. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V. |+| 19 | ~OE | input | Active-low output enable. When LOW, transceivers are enabled and pass data in the direction set by DIR. When HIGH, both A and B buses are placed in high-impedance (bus isolation). |+| 20 | VCC | power_in | Positive supply voltage input, 1.65 V to 3.6 V operating range (1.5 V minimum for data retention only). Decouple close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Diodes Incorporated |+| Package | TSSOP-20 |+| Category | Logic |+| Pins | 20 |++## Ordering variants++Same part, different packaging or reel option.++- `74LVC245AT20-13`+- `74LVC245AT20-13Q20-13`++## CAD (KiCad official)++- Symbol: `74LVC245AT20-13`+- 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:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/74LVC245AT20-13.pdf) (10 pp, sha256 `82a89c79af60b742`, 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/74lvc245at20-13-datasheet.pdf)

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