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データシートサーチシステム |
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データシートサーチシステム |
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MM54HC192 データシート(PDF) 3 Page - National Semiconductor (TI) |
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MM54HC192 データシート(HTML) 3 Page - National Semiconductor (TI) |
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3 / 8 page  AC Electrical Characteristics TAe25 C VCC e 50V tretfe6 ns CLe15 pF (unless otherwise specified) Symbol Parameter Conditions Typ Guaranteed Units Limit fMAX Maximum Clock Frequency Count Up 27 20 MHz Count Down 31 24 MHz tPLH Maximum Propagation Delay 17 26 ns Low to High Count Up to Carry tPHL Maximum Propagation Delay 18 24 ns High to Low tPLH Maximum Propagation Delay 16 24 ns Low to High Count Down to tPHL Maximum Propagation Delay Borrow 15 24 ns High to Low tPLH Maximum Propagation Delay 28 40 ns Low to High Count Up Or tPHL Maximum Propagation Delay Down to Q 36 52 ns High to Low tPLH Maximum Propagation Delay 30 42 ns Low to High Data or Load to Q tPHL Maximum Propagation Delay 40 55 ns High to Low tPHL Maximum Propagation Delay Clear to Q 35 47 ns High to Low Clear ’HC192 40 52 ns ’HC193 20 26 ns tW Minimum Pulse Width Load ’HC192 40 52 ns ’HC193 10 20 ns Count UpDown 15 22 ns tSD Minimum Setup time Data to Load 10 20 ns tHD Minimum Hold Time b 30 ns tREM Minimum Removal Time Clear Inactive 10 ns to Clock AC Electrical Characteristics VCC e 20V to 60V CLe 50 pF tretfe6ns TAe25 C 74HC 54HC Symbol Parameter Conditions VCC TAeb40 to 85 CTAeb55 to 125 C Units Typ Guaranteed Limits 20V 5 3 25 2 MHz Count Up 45V 25 18 14 12 MHz fMAX Maximum Clock Frequency 60V 29 20 16 13 MHz 20V 5 4 3 2 MHz Count Down 45V 27 20 16 11 MHz 60V 31 23 18 12 MHz tPLH Maximum Propagation Delay 20V 30 140 175 210 ns Low to High 45V 13 28 35 42 ns Count Up 60V 11 24 30 36 ns tPHL Maximum Propagation Delay to Carry 20V 39 130 163 195 ns High to Low 45V 16 26 33 39 ns 60V 14 22 28 33 ns 3 |
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