전자부품 데이터시트 검색엔진 |
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CD74HCT14E 데이터시트(PDF) 5 Page - Texas Instruments |
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CD74HCT14E 데이터시트(HTML) 5 Page - Texas Instruments |
5 / 16 page 5 Switching Specifications Input tr, tf = 6ns PARAMETER SYMBOL TEST CONDITIONS VCC (V) 25oC -40oC TO 85oC -55oC TO 125oC UNITS MIN TYP MAX MIN MAX MIN MAX HC TYPES Propagation Delay, A to Y tPLH, tPHL CL = 50pF 2 - - 135 - 170 - 205 ns CL = 50pF 4.5 - - 27 - 34 - 41 ns CL = 15pF 5 - 11 - ---- ns CL = 50pF 6 - - 23 - 29 - 35 ns Output Transition Times tTLH, tTHL CL = 50pF 2 - - 75 - 95 18 110 ns 4.5 - - 15 - 19 - 22 ns 6 - - 13 - 16 - 19 ns Input Capacitance CI - - - - 10 - 10 - 10 pF Power Dissipation Capacitance (Notes 3, 4) CPD - 5 - 20 - ---- pF HCT TYPES Propagation Delay, A to Y tPLH, tPHL CL = 50pF 4.5 - - 38 - 48 - 57 ns CL = 15pF 5 - 16 - ---- ns Output Transition Times tTLH, tTHL CL = 50pF 4.5 - - 15 - 19 - 22 ns Input Capacitance CI - - - - 10 - 10 - 10 pF Power Dissipation Capacitance (Notes 3, 4) CPD - 5 - 20 - ---- pF NOTES: 3. CPD is used to determine the dynamic power consumption, per inverter. 4. PD = VCC 2 f i (CPD + CL) where fi = input frequency, CL = output load capacitance, VCC = supply voltage. Test Circuits and Waveforms FIGURE 4. HC TRANSITION TIMES AND PROPAGATION DELAY TIMES, COMBINATION LOGIC FIGURE 5. HCT TRANSITION TIMES AND PROPAGATION DELAY TIMES, COMBINATION LOGIC tPHL tPLH tTHL tTLH 90% 50% 10% 50% 10% INVERTING OUTPUT INPUT GND VCC tr = 6ns tf = 6ns 90% tPHL tPLH tTHL tTLH 2.7V 1.3V 0.3V 1.3V 10% INVERTING OUTPUT INPUT GND 3V tr = 6ns tf = 6ns 90% |
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