component
SN74AC245PWR
Public Made by Adomby adom
Texas Instruments Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Datasheet-verified pinout, 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
markdownSN74AC245PWR
Texas Instruments · Buffers, Drivers, Receivers, Transceivers · TSSOP-20
SN74AC245PWR 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; low selects B→A data transmission, high selects A→B transmission. |
| 2 | A1 | bidirectional | A-bus line 1, bidirectional data signal with voltage range 0 to VCC. |
| 3 | A2 | bidirectional | A-bus line 2, bidirectional data signal with voltage range 0 to VCC. |
| 4 | A3 | bidirectional | A-bus line 3, bidirectional data signal with voltage range 0 to VCC. |
| 5 | A4 | bidirectional | A-bus line 4, bidirectional data signal with voltage range 0 to VCC. |
| 6 | A5 | bidirectional | A-bus line 5, bidirectional data signal with voltage range 0 to VCC. |
| 7 | A6 | bidirectional | A-bus line 6, bidirectional data signal with voltage range 0 to VCC. |
| 8 | A7 | bidirectional | A-bus line 7, bidirectional data signal with voltage range 0 to VCC. |
| 9 | A8 | bidirectional | A-bus line 8, bidirectional data signal with voltage range 0 to VCC. |
| 10 | GND | power_in | Ground, reference potential for all signal and power connections. |
| 11 | B8 | bidirectional | B-bus line 8, bidirectional data signal with voltage range 0 to VCC. |
| 12 | B7 | bidirectional | B-bus line 7, bidirectional data signal with voltage range 0 to VCC. |
| 13 | B6 | bidirectional | B-bus line 6, bidirectional data signal with voltage range 0 to VCC. |
| 14 | B5 | bidirectional | B-bus line 5, bidirectional data signal with voltage range 0 to VCC. |
| 15 | B4 | bidirectional | B-bus line 4, bidirectional data signal with voltage range 0 to VCC. |
| 16 | B3 | bidirectional | B-bus line 3, bidirectional data signal with voltage range 0 to VCC. |
| 17 | B2 | bidirectional | B-bus line 2, bidirectional data signal with voltage range 0 to VCC. |
| 18 | B1 | bidirectional | B-bus line 1, bidirectional data signal with voltage range 0 to VCC. |
| 19 | OE | input | Output enable input; low enables transceivers, high places all outputs in high-impedance state. |
| 20 | VCC | power_in | Positive power supply, operating voltage range 2V to 6V per recommended operating conditions. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-20 |
| Category | Logic |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
SN74AC245PWR - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
sn74ac245pwr-etched.step/sn74ac245pwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74ac245pwr.step/sn74ac245pwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (41 pp, sha256
2c5f4cb49e32a6f2, retrieved 2026-09-22, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-5(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).