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U74HC245 Datasheet(PDF) 4 Page - Unisonic Technologies |
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U74HC245 Datasheet(HTML) 4 Page - Unisonic Technologies |
4 / 5 page U74HC245 CMOS IC UNISONICTECHNOLOGIESCO.,LTD 4 of 5 www.unisonic.com.tw QW-R502-639.C SWITCHING CHARACTERISTICS (TA=25°С,CL=50pF,RL=1kΩ,unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Propagation delay from input (A or B) to output (B or A) tPD (tPLH/tPHL) VCC=2V 40 105 ns VCC=4.5V 15 21 ns VCC=6V 12 18 ns 3-state output enable time from input ( OE ) to output (A or B) tEN (tPZL/tPZH) VCC=2V 125 230 ns VCC=4.5V 23 46 ns VCC=6V 20 39 ns 3-state output disable time from input ( OE ) to output (A or B) tDIS (tPLZ/tPHZ) VCC=2V 74 200 ns VCC=4.5V 25 40 ns VCC=6V 21 34 ns Output transition time, (A or B) tT (tR/tF) VCC=2V 20 60 ns VCC=4.5V 8 12 ns VCC=6V 6 10 ns OPERATING CHARACTERISTICS PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Power Dissipation Capacitance CPD No load 40 pF |
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