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74LVC2G66GT Datasheet(PDF) 10 Page - NXP Semiconductors |
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74LVC2G66GT Datasheet(HTML) 10 Page - NXP Semiconductors |
10 / 23 page 74LVC2G66_2 © NXP B.V. 2007. All rights reserved. Product data sheet Rev. 02 — 28 August 2007 10 of 23 NXP Semiconductors 74LVC2G66 Bilateral switch 11. Dynamic characteristics [1] Typical values are measured at Tamb =25 °C and nominal VCC. [2] tpd is the same as tPLH and tPHL [3] propagation delay is the calculated RC time constant of the typical ON resistance of the switch and the specified capacitance when driven by an ideal voltage source (zero output impedance). [4] ten is the same as tPZH and tPZL [5] tdis is the same as tPLZ and tPHZ [6] CPD is used to determine the dynamic power dissipation (PD in µW). PD =CPD × VCC2 × fi × N+ Σ{(CL +CS(ON))× VCC2 × fo} where: fi = input frequency in MHz; fo = output frequency in MHz; CL = output load capacitance in pF; CS(ON) = maximum ON-state switch capacitance in pF; VCC = supply voltage in V; N = number of inputs switching; Σ{(C L +CS(ON))× VCC 2 × f o} = sum of the outputs. Table 9. Dynamic characteristics At recommended operating conditions; voltages are referenced to GND (ground = 0 V); for load circuit see Figure 18. Symbol Parameter Conditions −40 °C to +85 °C −40 °C to +125 °C Unit Min Typ[1] Max Min Max tpd propagation delay nY to nZ or nZ to nY; see Figure 16 [2][3] VCC = 1.65 V to 1.95 V - 0.8 2.0 - 3.0 ns VCC = 2.3 V to 2.7 V - 0.4 1.2 - 2.0 ns VCC = 2.7 V - 0.4 1.0 - 1.5 ns VCC = 3.0 V to 3.6 V - 0.3 0.8 - 1.5 ns VCC = 4.5 V to 5.5 V - 0.2 0.6 - 1.0 ns ten enable time nE to nY or nZ; see Figure 17 [4] VCC = 1.65 V to 1.95 V 1.0 4.6 10 1.0 13.0 ns VCC = 2.3 V to 2.7 V 1.0 2.7 5.6 1.0 7.5 ns VCC = 2.7 V 1.0 2.7 5.0 1.0 6.5 ns VCC = 3.0 V to 3.6 V 1.0 2.4 4.4 1.0 6.0 ns VCC = 4.5 V to 5.5 V 1.0 1.8 3.9 1.0 5.0 ns tdis disable time E to Y or Z; see Figure 17 [5] VCC = 1.65 V to 1.95 V 1.0 3.8 9.0 1.0 11.5 ns VCC = 2.3 V to 2.7 V 1.0 2.1 5.5 1.0 7.0 ns VCC = 2.7 V 1.0 3.5 6.5 1.0 8.5 ns VCC = 3.0 V to 3.6 V 1.0 3.0 6.0 1.0 8.0 ns VCC = 4.5 V to 5.5 V 1.0 2.2 5.0 1.0 6.5 ns CPD power dissipation capacitance CL = 50 pF; fi = 10 MHz; VI = GND to VCC [6] VCC = 2.5 V - 9.0 - - - pF VCC = 3.3 V - 11.0 - - - pF VCC = 5.0 V - 15.7 - - - pF |
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