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CD74FCT653 Folha de dados(PDF) 7 Page - Texas Instruments |
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CD74FCT653 Folha de dados(HTML) 7 Page - Texas Instruments |
7 / 9 page 8-7 Switching tr, tf = 2.5ns, CL = 50pF, RL (Figures 3, 4) PARAMETER SYMBOL VCC (V) 25oC0oC TO 70oC UNITS TYP MIN MAX Power Dissipation Capacitance CPD ---- pF Min (Valley) VOH (B Side) During Switching of Other Outputs (Output Under Test Not Switching) VOHV (Figure 1) 5 0.5 - - V Max (Peak) VOL During Switching of Other Outputs (Output Under Test Not Switching) VOLP (Figure 1) 51 - - V Input Capacitance CI --- 10 pF Three-State Output Capacitance (B Side) CO --- 15 pF Off-State Output Capacitance (A Side) CO --- 15 pF NOTES: 8. 5V: minimum is at 4.75V for 0oC to 70oC, typical is at 5V. 9. CPD, measured per flip-flop, is used to determine the dynamic power consumption. PD (per package) = VCC ICC + Σ(VCC 2 f I CPD + VO 2 f OCL + VCC ∆ICC D) where: VCC = supply voltage ∆ICC = flow through current x unit load CL = output load capacitance D = duty cycle of input high fO = output frequency fI = input frequency Test Circuits and Waveforms NOTE: 10. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; ZOUT ≤ 50Ω; tf, tr ≤ 2.5ns. FIGURE 1. TEST CIRCUIT FIGURE 2. SETUP, HOLD, AND RELEASE TIMING FIGURE 3. PULSE WIDTH 3V 0 DUT PULSE ZO GEN 7V 500 Ω 50pF 500 Ω VCC RT RT = ZO V0 CL RL RL VI tr, tf = 2.5ns (NOTE 10) SWITCH POSITION TEST SWITCH tPLZ, tPZL, Open Drain Closed tPHZ, tPZH, tPLH, tPHL Open DEFINITIONS: CL = Load capacitance, includes jig and probe capacitance. RT = Termination resistance, should be equal to ZOUT of the Pulse Generator. VIN = 0V to 3V. Input: tr =tf = 2.5ns (10% to 90%), unless otherwise specified ASYNCHRONOUS CONTROL tH tSH 3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V tH tSH PRESET CLEAR CLOCK ENABLE ETC. SYNCHRONOUS CONTROL tREM DATA INPUT TIMING INPUT tW LOW-HIGH-LOW PULSE HIGH-LOW-HIGH PULSE 1.5V 1.5V CD74FCT653, CD74FCT654 |
Nº de peça semelhante - CD74FCT653 |
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Descrição semelhante - CD74FCT653 |
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