Datasheet 74AC169 (Fairchild)

7 4 AC
November 1988 Revised November 1999
1 69 4- Stage 74AC169 4-Stage Synchronous Bidirectional Counter Synchr General Description Features
The AC169 is fully synchronous 4-stage up/down counter. ■ ICC reduced by 50% The AC169 is a modulo-16 binary counter. It features a ■ Synchronous counting and loading
onous
preset capability for programmable operation, carry looka- ■ Built-In lookahead carry capability head for easy cascading and a U/D input to control the direction of counting. All state changes, whether in count- ■ Presettable for programmable operation ing or parallel loading, are initiated by the LOW-to-HIGH ■ Outputs source/sink 24 mA
B
transition of the Clock.
idi rect Ordering Code: ional 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
C o
74AC169MTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
unter
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 P0–P3 Parallel Data Inputs PE Parallel Enable Input U/D Up-Down Count Control Input Q0–Q3 Flip-Flop Outputs TC Terminal Count Output FACT is a trademark of Fairchild Semiconductor Corporation. © 1999 Fairchild Semiconductor Corporation DS009934 www.fairchildsemi.com