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CD74HCT40103 Datasheet(PDF) 7 Page - Texas Instruments |
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CD74HCT40103 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 9 page 7 MR to TC tPLH, tPHL CL = 50pF 4.5 - - 55 - 69 - 83 ns CL = 15pF 5 - 23 - - - - - ns Output Transition Time tTHL,tTLH CL = 50pF 4.5 - - 15 - 19 - 22 ns Input Capacitance CIN CL = 50pF - - - 10 - 10 - 10 pF CP Maximum Frequency fMAX CL = 15pF 5 - 25 - - - - - MHz Power Dissipation Capacitance (Notes 5, 6) CPD -5 - 27 - - - - - pF NOTES: 4. Noncascaded operation only. With cascaded counters clock-to-terminal count propagation delays, count enables (PE or TE)-to-clock SET UP TIMES, and count enables (PE or TE)-to-clock HOLD TIMES determine maximum clock frequency. For example, with these HC de- vices: 5. CPD is used to determine the dynamic power consumption, per package. 6. PD = VCC 2 f i + CL VCC 2 f o where fi = Input Frequency, CL = Output Load Capacitance, VCC = Supply Voltage, fo = Output Frequency. Switching Specifications Input tr, tf = 6ns (Continued) PARAMETER SYMBOL TEST CONDITIONS VCC (V) 25oC -40oC TO 85oC -55oC TO 125oC UNITS MIN TYP MAX MIN MAX MIN MAX C P fMAX 1 CP-to-TC prop delay + TE-to-CP Setup Time + TE-to-CP Hold Time ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 1 60 30 0 ++ ----------------------------- 11MHz ≈ == Timing Diagrams FIGURE 2. CP MR TE PE PL P0 P1 P2 P3 P4 P5 P6 TC P7 HC/HCT40103 COUNT 255 254 3 2 1 0 255 254 254 253 8 7 6 5 4 255 254 253 252 CD74HC40103, CD74HCT40103 |
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