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CD74ACT251E Fiches technique(PDF) 6 Page - Texas Instruments |
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CD74ACT251E Fiches technique(HTML) 6 Page - Texas Instruments |
6 / 8 page 6 Three-State Output Capacitance CO Input Capacitance CI - - -10- -10 pF Power Dissipation Capacitance CPD (Note 11) - - 45 - - 45 - pF NOTES: 8. Limits tested 100%. 9. 3.3V Min is at 3.6V, Max is at 3V. 10. 5V Min is at 5.5V, Max is at 4.5V. 11. CPD is used to determine the dynamic power consumption per device. PD = VCC 2 f i (CPD + CL) where fi = input frequency, CL = output load capacitance, VCC = supply voltage. Switching Specifications Input tr, tf = 3ns, CL = 50pF (Worst Case) (Continued) PARAMETER SYMBOL VCC (V) -40oC TO 85oC -55oC TO 125oC UNITS MIN TYP MAX MIN TYP MAX FIGURE 1. THREE-STATE PROPAGATION DELAY WAVEFORMS AND TEST CIRCUIT FIGURE 2. PROPAGATION DELAY TIMES DUT WITH THREE- STATE OUTPUT INPUT LEVEL 90% VS 10% GND tf = 3ns tPZL tPZH tPLZ tPHZ OUTPUTS ENABLED OUTPUTS DISABLED OUTPUT: LOW TO OFF TO LOW OUTPUT: HIGH TO OFF TO HIGH OTHER INPUTS (TIED HIGH OR LOW) OUTPUT DISABLE CL 50pF 500 Ω† RL 500 Ω† RL OUT VS 0.2VCC VOL (≠ GND) VOH (≠ VCC) 0.8 VCC VS GND (tPHZ, tPZH) OUTPUTS ENABLED OPEN (tPHL, tPLH) 2 VCC (tPLZ, tPZL) (OPEN DRAIN) tr = 3ns OUTPUT DISABLE †FOR AC SERIES ONLY: WHEN VCC = 1.5V, RL = 1kΩ INPUT LEVEL tr = 3ns tf = 3ns 90% IN VS 10% VS VS tPHL tPHL tPLH INVERTING OUTPUT Y NON-INVERTING OUTPUT Y tPLH CD74AC251, CD74ACT251 |
Numéro de pièce similaire - CD74ACT251E |
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Description similaire - CD74ACT251E |
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