BCD DECADE/MODULO 16 BINARY SYNCHRONOUS BI-DIRECTIONAL COUNTERS
The SN54 / 74LS168 and SN54 / 74LS169 are fully synchronous 4-stage up/down counters featuring a preset capability for programmable operation, carry lookahead for easy cascading and a U/ D input to control the direction of counting.
The SN54 / 74LS168 counts in a BCD decade (8, 4, 2, 1) 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.
SN54/74LS168 SN54/74LS169
BCD DECADE/ MODULO 16 BINARY SYNCHRONOUS BI-DIRECTIONAL COUNTERS
LOW POWER
SCHOTTKY
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Low Power Dissipation 100 ...