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74F190 Counter Datasheet PDF

Up/Down Decade Counter

Up/Down Decade Counter

 

 

 

Part Number 74F190
Description Up/Down Decade Counter
Feature www.
DataSheet4U.
com 54F 74F190 Up Down Decade Counter with Preset and Ripple C lock November 1994 54F 74F190 Up Down Decade Counter with Preset and Ripple Clock General Description The ’F190 i s a reversible BCD (8421) decade counte r featuring synchronous counting and as ynchronous presetting The preset featur e allows the ’F190 to be used in prog rammable dividers The Count Enable inpu t the Terminal Count output and the Rip ple Clock output make possible a variet y of methods of implementing multistage counters In the counting modes state c hanges are initiated by the rising edge of the clock Fea .
Manufacture National Semiconductor
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74F190

 

 

 


 

 

 

Part Number 74F190
Description Up/Down Decade Counter
Feature 54F 74F189 64-Bit Random Access Memory w ith TRI-STATE Outputs August 1995 54F 74F189 64-Bit Random Access Memory wit h TRI-STATE Outputs General Description The ’F189 is a high-speed 64-bit RAM organized as a 16word by 4-bit array A ddress inputs are buffered to minimize loading and are fully decoded on-chip T he outputs are TRISTATE and are in the high impedance state whenever the Chip Select (CS) input is HIGH The outputs a re active only in the Read mode and the output data is the complement of the s tored data Features Y Y Y Y Y TRI-STA TE outputs for data bus applications Bu ffered inputs mi .
Manufacture Fairchild
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