전자부품 데이터시트 검색엔진 |
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CD74HCT4040MT 데이터시트(PDF) 7 Page - Texas Instruments |
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CD74HCT4040MT 데이터시트(HTML) 7 Page - Texas Instruments |
7 / 18 page 7 Qn to Qn + 1 tPLH, tPHL CL = 50pF 4.5 - - 15 - 19 - 22 ns CL =15pF 5 - 4 - - - - - ns MR to Qn tPLH, tPHL CL = 50pF 4.5 - - 40 - 50 - 60 ns CL =15pF 5 - 17 - - - - - ns Output Transition tTLH,tTHL CL = 50pF 4.5 - - 15 - 19 - 22 ns Input Capacitance CIN CL =15pF - - - 10 - 10 - 10 pF Power Dissipation Capacitance (Notes 3, 4) CPD CL =15pF 5 - 45 - - - - - pF NOTES: 3. CPD is used to determine the dynamic power consumption, per package. 4. PD =VCC 2 f i + ∑ (CLVCC 2 fi/M) where: M = 21,22,23, ...212,f i = Input Frequency, CL = Output Load Capacitance, VCC = Supply Voltage. 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 Test Circuits and Waveforms NOTE: Outputs should be switching from 10% VCC to 90% VCC in accordance with device truth table. For fMAX, input duty cycle = 50%. FIGURE 1. HC CLOCK PULSE RISE AND FALL TIMES AND PULSE WIDTH NOTE: Outputs should be switching from 10% VCC to 90% VCC in accordance with device truth table. For fMAX, input duty cycle = 50%. FIGURE 2. HCT CLOCK PULSE RISE AND FALL TIMES AND PULSE WIDTH FIGURE 3. HC TRANSITION TIMES AND PROPAGATION DELAY TIMES, COMBINATION LOGIC FIGURE 4. HCT TRANSITION TIMES AND PROPAGATION DELAY TIMES, COMBINATION LOGIC CLOCK 90% 50% 10% GND VCC trCL tfCL 50% 50% tWL tWH 10% tWL + tWH = fCL I CLOCK 2.7V 1.3V 0.3V GND 3V trCL = 6ns tfCL = 6ns 1.3V 1.3V tWL tWH 0.3V tWL + tWH = fCL I 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% CD54HC4040, CD74HC4040, CD54HCT4040, CD74HCT4040 |
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