74AC169 ,4-Stage Synchronous Bidirectional Counterfeatures a
74AC169
4-Stage Synchronous Bidirectional Counter
74AC169 4-Stage Synchronous Bidirectional Counter November 1988 Revised November 1999 74AC169 4-Stage Synchronous Bidirectional Counter General Description Features The AC169 is fully synchronous 4-stage up/down counter.I reduced by 50% CC The AC169 is a modulo-16 binary counter. It features a Synchronous counting and loading preset capability for programmable operation, carry looka- Built-In lookahead carry capability head for easy cascading and a U/D input to control the Presettable for programmable operation direction of counting. All state changes, whether in count- ing or parallel loading, are initiated by the LOW-to-HIGHOutputs source/sink 24 mA transition of the Clock. Ordering Code: Order Number Package Number Package Description 74AC169SC M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body 74AC169SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74AC169MTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74AC169PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. Logic Symbols Connection Diagram IEEE/IEC Pin Descriptions Pin Names Description CEP Count Enable Parallel Input CET Count Enable Trickle Input CP Clock Pulse Input P –P Parallel Data Inputs 0 3 PE Parallel Enable Input U/D Up-Down Count Control Input Q –Q Flip-Flop Outputs 0 3 TC Terminal Count Output FACT is a trademark of . © 1999 DS009934
