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SN74AHC245PWR
Public Made by Adomby adom
Texas Instruments Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSN74AHC245PWR
Texas Instruments · Buffers, Drivers, Receivers, Transceivers · TSSOP-20
SN74AHC245PWR from Texas Instruments, in a TSSOP-20. 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 | DIR | input | Direction control input: L selects B data to A bus, H selects A data to B bus. |
| 2 | A1 | bidirectional | A bus bit 1 bidirectional transceiver I/O. |
| 3 | A2 | bidirectional | A bus bit 2 bidirectional transceiver I/O. |
| 4 | A3 | bidirectional | A bus bit 3 bidirectional transceiver I/O. |
| 5 | A4 | bidirectional | A bus bit 4 bidirectional transceiver I/O. |
| 6 | A5 | bidirectional | A bus bit 5 bidirectional transceiver I/O. |
| 7 | A6 | bidirectional | A bus bit 6 bidirectional transceiver I/O. |
| 8 | A7 | bidirectional | A bus bit 7 bidirectional transceiver I/O. |
| 9 | A8 | bidirectional | A bus bit 8 bidirectional transceiver I/O. |
| 10 | GND | power_in | Ground connection. |
| 11 | B8 | bidirectional | B bus bit 8 bidirectional transceiver I/O. |
| 12 | B7 | bidirectional | B bus bit 7 bidirectional transceiver I/O. |
| 13 | B6 | bidirectional | B bus bit 6 bidirectional transceiver I/O. |
| 14 | B5 | bidirectional | B bus bit 5 bidirectional transceiver I/O. |
| 15 | B4 | bidirectional | B bus bit 4 bidirectional transceiver I/O. |
| 16 | B3 | bidirectional | B bus bit 3 bidirectional transceiver I/O. |
| 17 | B2 | bidirectional | B bus bit 2 bidirectional transceiver I/O. |
| 18 | B1 | bidirectional | B bus bit 1 bidirectional transceiver I/O. |
| 19 | OE | input | Output enable input: active low disables outputs to high impedance state. |
| 20 | VCC | power_in | Power supply voltage pin, 2V to 5.5V recommended operating range. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-20 |
| Category | Logic |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
SN74AHC245PWR - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
sn74ahc245pwr-etched.step/sn74ahc245pwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74ahc245pwr.step/sn74ahc245pwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (43 pp, sha256
f97d7760d4f3347a, retrieved 2026-09-25, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).