74F169

54F 74F169 4-Stage Synchronous Bidirectional Counter November 1994 54F 74F169 4-Stage Synchronous Bidirectional Counter General Description The ’F169 is a fully synchronous 4-stage up down counter The ’F169 is a modulo-16 binary counter 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 Y Y Y Asynchronous counting and loading Built-in lookahead carry capability Presettable for programmable operation Commercial 74F169PC Military Package Number N16E Package Description 16-Lead (0 300 Wide) Molded Dual-In-Line 16-Lead Ceramic Dual-In-Line 16-Lead (0 150 Wide) Molded Small Outline JEDEC 16-Lead (0 300 Wide) Molded Small Outline EIAJ 54F169DM (Note 2) 74F169SC (Note 1) 74F169SJ (Note 1) J16A M16A M16D Note 1 Devices also available in 13 reel Use suffix e SCX and SJX Note 2 Military grade device with environmental and burn-in processing Use suffix e DMQB Logic Symbols IEEE IEC ’F169 TL F 9488 – 3 TL F 9488 – 9 TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation TL F 9488 RRD-B30M75 Printed in U S A Connection Diagrams Pin Assignment for DIP SOIC and Flatpak Pin Assignment for LCC TL F 9488–1 TL F 9488 – 2 Unit Loading Fan Out 54F 74F Pin Names Description UL HIGH LOW 10 10 10 20 10 10 1...