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74AHCT1G14GW Fiches technique(PDF) 6 Page - NXP Semiconductors |
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74AHCT1G14GW Fiches technique(HTML) 6 Page - NXP Semiconductors |
6 / 15 page 74AHC_AHCT1G14_6 © NXP B.V. 2009. All rights reserved. Product data sheet Rev. 06 — 18 May 2009 6 of 15 NXP Semiconductors 74AHC1G14; 74AHCT1G14 Inverting Schmitt trigger 12. 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 (µW). PD =CPD × VCC2 × fi + ∑(CL × VCC2 × fo) where: fi = input frequency in MHz; fo = output frequency in MHz; CL = output load capacitance in pF; VCC = supply voltage in Volts. Table 9. Dynamic characteristics GND = 0 V; tr = tf ≤ 3.0 ns. For waveform see Figure 5. For test circuit see Figure 6. Symbol Parameter Conditions 25 °C −40 °C to +85 °C −40 °C to +125 °C Unit Min Typ Max Min Max Min Max For type 74AHC1G14 tpd propagation delay A to Y; [1] VCC = 3.0 V to 3.6 V [2] CL = 15 pF - 4.2 12.8 1.0 15.0 1.0 16.5 ns CL = 50 pF - 6.0 16.3 1.0 18.5 1.0 20.5 ns VCC = 4.5 V to 5.5 V [3] CL = 15 pF - 3.2 8.6 1.0 10.0 1.0 11.0 ns CL = 50 pF - 4.6 10.6 1.0 12.0 1.0 13.5 ns CPD power dissipation capacitance per buffer; CL =50pF;f=1 MHz; VI = GND to VCC [4] -12- - - - - pF For type 74AHCT1G14 tpd propagation delay A to Y; VCC = 4.5 V to 5.5 V [1] [3] CL = 15 pF - 4.1 7.0 1.0 8.0 1.0 9.0 ns CL = 50 pF - 5.9 8.5 1.0 10.0 1.0 11.0 ns CPD power dissipation capacitance per buffer; VI = GND to VCC [4] -13- - - - - pF |
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