Datasheet Summary
4-STAGE SYNCHRONOUS BIDIRECTIONAL COUNTERS
The MC54/74F168 and MC54/74F169 are fully synchronous 4-stage up/ down counters. The F168 is a BCD decade counter; the F169 is a modulo-16 binary counter. Both feature a preset capability for programmable operation, carry lookahead for easy cascading, and a U/D input to control the direction of counting. All state changes, whether in counting or parallel loading, are initiated by the LOW-to-HIGH transition of the clock.
- Asynchronous Counting and Loading
- Built-In Lookahead Carry Capability
- Presettable for Programmable Operation CONNECTION DIAGRAM (TOP VIEW)
VCC 16 TC 15 Q0 14 Q1 13 Q2 12 Q3 11 CET 10 PE 9
MC54/74F168 MC54/74F169
4-STAGE...