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IDT74AHCT191 Data Sheet

High Speed CMOS Up-Down Binary Counter

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IDT74AHCT191

FEATURES: • Equivalent to ALS speeds and output drive over full temperature and voltage supply extremes • IOL = 14mA over full military temperature range • CMOS power levels (5!J.W typo static) • Both CMOS and TTL output compatible • Substantially lower input current levels than ALS (5!J. max.) • 10.

IDT74AHCT191

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FEATURES: • Equivalent to ALS speeds and output drive over full temperature and voltage supply extremes • IOL = 14mA over full military temperature range • CMOS power levels (5!J.W typo static) • Both CMOS and TTL output compatible • Substantially lower input current levels than ALS (5!J. max.) • 100% product assurance screening to MIL-STD-883, Class B is available • JEDEC standard pinout for DIP and LCC FUNCTIONAL BLOCK DIAGRAM DESCRIPTION: The IDT54174AHCT191 is a reversible modul0-16 binary counter, featuring synchronous counting and asynchronous presetting, built using advanced CEMOS'·, a dual metal CMOS tEl6:hnology. The preset feature allows the IDT54/74AHCT191 to be used in programmable dividers. The Count Enable input, the Terminal Count output and the Ripple Clock output make possible a variety of methods of implementing multist.




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