74AC169

74AC169 4-Stage Synchronous Bidirectional Counter

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74AC169 4-Stage Synchronous Bidirectional Counter

November 1988 Revised November 1999

74AC169 4-Stage Synchronous Bidirectional Counter
General Description
The AC169 is fully synchronous 4-stage up/down counter. The AC169 is a modulo-16 binary counter. It features 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.

Features
s ICC reduced by 50% s Synchronous counting and loading s Built-In lookahead carry capability s Presettable for programmable operation s Outputs source/sink 24 mA

Ordering Code:
Order Number 74AC169SC 74AC169SJ 74AC169MTC 74AC169PC Package Number M16A M16D MTC16 N16E Package Description 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Body 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 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 CEP CET CP P0 P3 PE U/D Q0 Q3 TC Description Count Enable Parallel Input Count Enable Trickle Input Clock Pulse Input Parallel Data Inputs Parallel Enable Input Up-Down Count Control Input Flip-Flop Outputs Terminal Count Output

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1999 Fairchild Semiconductor Corporation

DS009934

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