Service Manuals, User Guides, Schematic Diagrams or docs for : . Electronic Components Datasheets Various datasheets 74ls168

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                                                                                                    SN54/74LS168
BCD DECADE/MODULO                                                                                   SN54/74LS169
16 BINARY SYNCHRONOUS
BI-DIRECTIONAL COUNTERS
                                                                                                      BCD DECADE / MODULO
   The SN54 / 74LS168 and SN54 / 74LS169 are fully synchronous 4-stage
                                                                                                   16 BINARY SYNCHRONOUS
up/down counters featuring a preset capability for programmable operation,
carry lookahead for easy cascading and a U / D input to control the direction                      BI-DIRECTIONAL COUNTERS
of counting. The SN54 / 74LS168 counts in a BCD decade (8, 4, 2, 1)                                     LOW POWER SCHOTTKY
sequence, while the SN54 / 74LS169 operates in a Modulo 16 binary
sequence. All state changes, whether in counting or parallel loading, are
initiated by the LOW-to-HIGH transition of the clock.

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