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CD74HC240M96E4 数据表(PDF) 6 Page - Texas Instruments |
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CD74HC240M96E4 数据表(HTML) 6 Page - Texas Instruments |
6 / 17 page 6 Output Enable and Disable Times tTLH, tTHL CL = 50pF 4.5 - - 30 - - 38 - - 45 ns Output Transition Time tTHL, tTLH CL = 50pF 4.5 - - 12 - - 15 - - 18 ns Input Capacitance CI CL = 50pF - 10 - 10 - - 10 - - 10 pF Power Dissipation Capacitance (Notes 3, 4) CPD HCT240 - 5 - 40 - - - ---- pF HCT241 - 5 - 38 - - - ---- pF HCT244 - 5 - 40 - - - ---- pF NOTES: 3. CPD is used to determine the dynamic power consumption, per channel. 4. PD = VCC 2 f i (CPD + CL) where fi = Input Frequency, fO = Output Frequency, CL = Output Load Capacitance, VCC = Supply Voltage. Test Circuits and Waveforms FIGURE 1. HC TRANSITION TIMES AND PROPAGATION DELAY TIMES, COMBINATION LOGIC FIGURE 2. HCT TRANSITION TIMES AND PROPAGATION DELAY TIMES, COMBINATION LOGIC FIGURE 3. HC THREE-STATE PROPAGATION DELAY WAVEFORM FIGURE 4. HCT THREE-STATE PROPAGATION DELAY WAVEFORM Switching Specifications CL = 50pF, Input tr, tf = 6ns (Continued) PARAMETER SYMBOL TEST CONDI- TIONS VCC (V) 25oC -40oC TO 85oC -55oC TO 125oC UNITS MIN TYP MAX MIN TYP MAX MIN TYP MAX 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% 50% 10% 90% GND VCC 10% 90% 50% 50% OUTPUT DISABLE OUTPUT LOW TO OFF OUTPUT HIGH TO OFF OUTPUTS ENABLED OUTPUTS DISABLED OUTPUTS ENABLED 6ns 6ns tPZH tPHZ tPZL tPLZ 0.3 2.7 GND 3V 10% 90% 1.3V 1.3V OUTPUT DISABLE OUTPUT LOW TO OFF OUTPUT HIGH TO OFF OUTPUTS ENABLED OUTPUTS DISABLED OUTPUTS ENABLED tr 6ns tPZH tPHZ tPZL tPLZ 6ns tf 1.3 CD54/74HC240, CD54/74HCT240, CD74HC241, CD54/74HCT241, CD54/74HC244, CD54/74HCT244 |
类似零件编号 - CD74HC240M96E4 |
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类似说明 - CD74HC240M96E4 |
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