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HCF4518BEY 数据表(PDF) 2 Page - STMicroelectronics |
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HCF4518BEY 数据表(HTML) 2 Page - STMicroelectronics |
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2 / 11 page  HCF4518B 2/11 IINPUT EQUIVALENT CIRCUIT PIN DESCRIPTION FUNCTIONAL DIAGRAM TRUTH TABLE X : Don’t Care PIN No SYMBOL NAME AND FUNCTION 1 CLOCK A Clock A input 2 ENABLE A Enable A Input 7 RESET A Reset A Input 3, 4, 5, 6 Q1A to Q4A Data Outputs 9 CLOCK B Clock B input 10 ENABLE B Enable B Input 15 RESET B Reset B Input 11,12,13,14 Q1B to Q4B Data Outputs 8 VSS Negative Supply Voltage 16 VDD Positive Supply Voltage CLOCK ENABLE RESET ACTION H L INCREMENT COUNTER L L INCREMENT COUNTER X L NO CHANGE X L NO CHANGE L L NO CHANGE H L NO CHANGE X X H Q1 THRU Q4 = 0 |
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