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74AHCU04 Datenblatt(PDF) 5 Page - NXP Semiconductors |
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74AHCU04 Datenblatt(HTML) 5 Page - NXP Semiconductors |
5 / 14 page 74AHCU04_3 © NXP B.V. 2007. All rights reserved. Product data sheet Rev. 03 — 14 November 2007 5 of 14 NXP Semiconductors 74AHCU04 Hex inverter 10. Dynamic characteristics [1] tpd is the same as tPLH and tPHL. [2] Typical values are measured at VCC = 3.3 V. [3] Typical values are measured at VCC = 5.0 V. [4] CPD is used to determine the dynamic power dissipation (PD in µW). PD =CPD × VCC2 × fi × N+ ∑(CL × VCC2 × fo) where: fi = input frequency in MHz; fo = output frequency in MHz; CL = output load capacitance in pF; VCC = supply voltage in V; N = number of inputs switching; ∑(C L × VCC 2 × f o) = sum of outputs. 11. Waveforms Table 7. Dynamic characteristics GND = 0 V; For test circuit see Figure 7. Symbol Parameter Conditions 25 °C −40 °C to +85 °C −40 °C to +125 °C Unit Min Typ Max Min Max Min Max tpd propagation delay nA to nY; see Figure 6 [1] VCC = 3.0 V to 3.6 V [2] CL = 15 pF - 3.0 7.1 1.0 8.5 1.0 9.0 ns CL = 50 pF - 3.4 10.6 1.0 12.0 1.0 13.5 ns VCC = 4.5 V to 5.5 V [3] CL = 15 pF - 2.4 5.5 1.0 6.5 1.0 7.0 ns CL = 50 pF - 3.5 7.0 1.0 8.0 1.0 9.0 ns CPD power dissipation capacitance CL = 50 pF; fi = 1 MHz; VI = GND to VCC [4] - 9.1 - - - - - pF VM = 0.5 × VCC; VI = GND to VCC. Test data is given in Table 7. Definitions for test circuit: CL = Load capacitance including jig and probe capacitance. RT = Termination resistance should be equal to output impedance Zo of the pulse generator. Fig 6. The input (nA) to output (nY) propagation delay times Fig 7. Load circuit for switching times mna344 tPHL tPLH VM VM VM VM nA input nY output GND VI VOH VOL VCC VI VO mna034 DUT CL 50 pF RT PULSE GENERATOR |
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