Datasheet for the 245 octal bus transceiver in the SN54 series, the military temperature range counterpart of the common 74 series part, as a 150 KB PDF.

Datasheet covering the SN7408N quad 2-input positive AND gate, a standard TTL device in a plastic dual in-line package.

PDF of about 539 KB named only with a Texas Instruments SDLS literature code, so the specific device is not given in the name.

Datasheet labelled with the Texas Instruments literature code SDLS114, part of the document series TI uses for its legacy TTL logic products.

A 223 KB PDF datasheet named only by a Texas Instruments SDLS literature code, the numbering TI applies to documents for its standard TTL logic lines.

Boardview in BRD format for Apple logic board 820-02536, 262 KB in size. Only the board number appears in the name, without a Mac model, so confirm the 820 number…

Schematic in PDF for Apple logic board 820-01779, revision A, compressed into a 3.25 MB RAR.

Boardview for Apple logic board 820-01987 in .brd format, showing component placement, pin numbering and net connections.

BIOS (EFI firmware) dump for the Apple MacBook Pro A1502, EMC 2678, logic board 820-3536-A. The 820- prefix is Apple's logic board numbering.

Schematic in PDF format for the MacBook A1286 with the K18 project code, logic board 820-2850-A, packed in a 4.12 MB RAR.

Apple logic board schematic for 820-00928, with MLB_BAFFIN2 in the name indicating the main logic board design, likely tied to an AMD Baffin GPU variant.

Circuit diagram for the Apple logic board 820-00928, supplied as a 3.18 MB RAR archive; the name gives no model or revision details beyond the board number.

Small archive for Apple board 820-2936, project code K90i, with 07 likely a revision or version suffix.

Archive for the MacBook Pro A1278 logic board 820-2936-B, codename K90i. Apple identifies logic boards with 820-xxxx numbers, and the trailing letter marks the revision…

Apple schematic in PDF form for logic board 820-3023, revision A judging by the trailing letter, about 1.29 MB.

Firmware archive for the Apple MacBook 13-inch A1342, logic board 820-2883. The 820-xxxx string is the Apple logic board part number and must match the PCB marking.

Schematic of the main logic board for the iPhone 8 Plus, identified in the name by its D21 code, in a 1.91 MB PDF. MLB stands for main logic board.

Archive for the Apple MacBook Air A1932, Apple internal project code J140, with 051 also appearing in the name, possibly a revision or board identifier.

RAR archive for an Apple MacBook Pro main logic board, identified by the tokens FA255 and M42C, with MLB meaning main logic board.

Circuit schematic for the Apple iPad Air logic board, a PDF of about 2.39 MB. It documents power distribution, the power-up sequence, interface lines and component…

Datasheet for the L298, a dual full-bridge driver from ST used to run DC motors, relays and stepper motors at up to several amperes total.

Boardview for the Apple A2159 MacBook Pro, logic board 820-01598, compressed into a 183 KB zip.

High-resolution photographs of an Apple MacBook Pro 13-inch logic board, number 820-00923-A.

RAR archive of 1.79 MB labelled with Apple model A1425, the identifier used for the 13-inch MacBook Pro with Retina display; the name does not reveal whether it holds a…

PDF schematic for the Apple A1181 MacBook, logic board 820-2279 at revision A. Apple's 820-xxxx numbering identifies the specific logic board, so the number printed on…

Short 225 KB datasheet in PDF, named only SDLS181, which does not state the device it describes.

PDF datasheet of 410 KB carrying only a Texas Instruments SDLS document number instead of a part name; TI applies this prefix to datasheets for its classic bipolar logic…

PDF datasheet carrying the literature number SDLS099, roughly 437 KB in size, with no part number visible in the file name itself.

Small PDF datasheet, 146 KB, named only by the literature code SDLS098 with no device number in the title.

Boardview for Apple logic board 820-2496, in BRD format within a 137 KB RAR archive. The 820- prefix is Apple's own logic-board numbering, and the number printed on the…

Apple logic board boardview for 820-2375, code named M96A, provided as BDV and BRD files in a RAR archive.

Boardview for the Apple MacBook Pro A1278, logic board 820-3115 revision A, with BDV and BRD files in a 192 KB ZIP.

Apple schematic in PDF form for logic board 820-00939, project J174, delivered inside a 2.91 MB RAR.

Boardview for the Apple A1278 MacBook Pro 13-inch, packed in a ZIP archive of about 464 KB.

Archive for the Apple iMac A1418, EMC 2889, logic board 820-00430, with an A suffix that may indicate a revision.

RAR archive of 187 KB named after Apple logic board 820-01598, with no further detail about its contents.

Combined schematic and boardview set for the Apple MacBook Pro A1706, packed in a 2.28 MB RAR archive.

Archive for the Apple logic board 820-3588 at revision A. The name does not say what is inside or which Mac model it serves, so open the RAR and check whether it holds a…

Archive for the Apple A1370 MacBook Air, logic board 820-2855 revision A, about 1.36 MB in RAR form.

Archive for Apple logic board 820-00840 revision A, 4.85 MB in RAR format. Apple marks its logic boards with 820-xxxx or 820-xxxxx part numbers, the most reliable way to…