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HCF40160B-40161B 데이터시트(PDF) 2 Page - STMicroelectronics |
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HCF40160B-40161B 데이터시트(HTML) 2 Page - STMicroelectronics |
2 / 15 page ABSOLUTE MAXIMUM RATING Symbol Parameter Value Unit VDD * Supply Voltage: HCC Types HCF Types -0.5 to +20 -0.5 to +18 V V Vi Input Voltage -0.5 to VDD + 0.5 V II DC Input Current (any one input) ± 10 mA Ptot Total Power Dissipation (per package) Dissipation per Output Transistor for Top = Full Package Temperature Range 200 100 mW mW Top Operating Temperature: HCC Types HCF Types -55 to +125 -40 to +85 oC oC Tstg Storage Temperature -65 to +150 oC Stresses above those listed under ”Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress ratingonly and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for external periods may affect device reliability. * All voltage values are referred to VSS pin voltage. cascading counter for n-bit synchronour application without additional gating. Instrumental in accom- plishing this function are two count-enable input and a carry output (COUT). Counting is enable when both PE and TE inputs are high. The TE input is fed forward to enable COUT. This enable output produces a positive output pulse with a duration ap- proximately equal to the positive portion of the Q1 output. This positive overflow carry pulse can be used to enable successive cascaded stages. Logic transitions at the PE or TE inputs may occur when the clock is either high or low. RECOMMENDED OPERATING CONDITIONS Symbol Parameter Value Unit VDD Supply Voltage: HCC Types HCF Types 3to 18 3to 15 V V VI Input Voltage 0 to VDD V Top Operating Temperature: HCC Types HCF Types -55 to +125 -40 to +85 oC oC TRUTH TABLE Clock CLR LOAD PE TE Operation 1 0 X X Preset 11 0 X NC 11 X 0 NC 1 1 1 1 Count X 0 X X X Reset (HCC/HCF40160B, HCC/HCF40161B) 0 X X X Reset (HCC/HCF40162B, HCC/HCF40163B) 1 X X X NC (HCC/HCF40162B, HCC/HCF40163B) 1 = HIGH LEVEL, 0 = LOW LEVEL, X = DON’T CARE, NC = NO CHANGE HCC/HCF40160B-40161B-40162-40163 2/15 |
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