Service Manuals, User Guides, Schematic Diagrams or docs for : . Electronic Components Datasheets Various datasheets 74ls90
<< Back | HomeMost service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.
Image preview - the first page of the document
>> Download 74ls90 documenatation <<
Text preview - extract from the document
SN54/74LS90
SN54/74LS92
DECADE COUNTER; SN54/74LS93
DIVIDE-BY-TWELVE COUNTER;
4-BIT BINARY COUNTER
DECADE COUNTER;
The SN54 / 74LS90, SN54 / 74LS92 and SN54 / 74LS93 are high-speed
4-bit ripple type counters partitioned into two sections. Each counter has a di-
DIVIDE-BY-TWELVE COUNTER;
vide-by-two section and either a divide-by-five (LS90), divide-by-six (LS92) or 4-BIT BINARY COUNTER
divide-by-eight (LS93) section which are triggered by a HIGH-to-LOW transi- LOW POWER SCHOTTKY
tion on the clock inputs. Each section can be used separately or tied together
(Q to CP) to form BCD, bi-quinary, modulo-12, or modulo-16 counters. All of
the counters have a 2-input gated Master Reset (Clear), and the LS90 also
has a 2-input gated Master Set (Preset 9).
◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo