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74F190SC Scheda tecnica(PDF) 1 Page - National Semiconductor (TI) |
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74F190SC Scheda tecnica(HTML) 1 Page - National Semiconductor (TI) |
1 / 10 page TLF9494 November 1994 54F74F190 UpDown Decade Counter with Preset and Ripple Clock General Description The ’F190 is a reversible BCD (8421) decade counter fea- turing synchronous counting and asynchronous presetting The preset feature allows the ’F190 to be used in program- mable dividers The Count Enable input the Terminal Count output and the Ripple Clock output make possible a variety of methods of implementing multistage counters In the counting modes state changes are initiated by the rising edge of the clock Features Y High-speed125 MHz typical count frequency Y Synchronous counting Y Asynchronous parallel load Y Cascadable Commercial Military Package Package Description Number 74F190PC N16E 16-Lead (0300 Wide) Molded Dual-In-Line 54F190DM (Note 2) J16A 16-Lead Ceramic Dual-In-Line 74F190SC (Note 1) M16A 16-Lead (0150 Wide) Molded Small Outline JEDEC 54F190FM (Note 2) W16A 16-Lead Cerpack 54F190LM (Note 2) E20A 20-Lead Ceramic Leadless Chip Carrier Type C Note 1 Devices also available in 13 reel Use suffix e SCX Note 2 Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB Logic Symbols Connection Diagrams TLF9494 – 1 IEEEIEC TLF9494 – 4 Pin Assignment for DIP SOIC and Flatpak TLF9494 – 2 Pin Assignment for LCC TLF9494 – 3 TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation RRD-B30M75Printed in U S A |
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