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- Chip direction and empty point real point marking diagramSchematic · 492 KB · 10 May 2025Schematic pdf—492 KB
- 820-01055-07 Directional pattern
Directional pattern PDF for the Apple 820-01055 logic board, revision 07. The name suggests a drawing showing component orientation, such as pin-one marks and polarity…
Schematic · 820-01055 · 3.45 MB · 1 Jun 2023Schematic pdf3.45 MB - 74HC245
Component document for the 74HC245, an octal bus transceiver with three-state outputs, provided as a 267 KB PDF in the schematic category.
Schematic · 267 KB · 8 Aug 2026Schematic pdf—267 KB - TMS75176B
Datasheet for the TMS75176B, a Texas Instruments differential bus transceiver for RS-485 and RS-422 links, a variant of the widely used 75176 family.
Datasheet · 192 KB · 20 Oct 2015Datasheet pdf—192 KB - sn74ls640.rev7
PDF datasheet, revision 7, for the SN74LS640 octal bus transceiver with inverting 3-state outputs, part of the 74LS low-power Schottky TTL range, 71.9 KB in size.
Datasheet · 71.9 KB · 4 Dec 2024Datasheet pdf—71.9 KB - SN74LS540N
Condensed PDF datasheet, 10.8 KB, for the SN74LS540N, the DIP package of the 74LS540 octal buffer and line driver with inverting 3-state outputs in the low-power…
Datasheet · 10.8 KB · 4 Dec 2024Datasheet pdf—10.8 KB