. Electronic Components Datasheets 74ls168 free download

File name 74ls168.pdf

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.