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74AHCT86 Datenblatt(PDF) 7 Page - NXP Semiconductors |
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74AHCT86 Datenblatt(HTML) 7 Page - NXP Semiconductors |
7 / 14 page 74AHC_AHCT86_2 © NXP B.V. 2007. All rights reserved. Product data sheet Rev. 02 — 15 November 2007 7 of 14 NXP Semiconductors 74AHC86; 74AHCT86 Quad 2-input EXCLUSIVE-OR gate [1] Typical values are measured at nominal supply voltage (VCC = 3.3 V and VCC = 5.0 V). [2] tpd is the same as tPLH and tPHL. [3] CPD is used to determine the dynamic power dissipation (PD in µW). PD =CPD × VCC2 × fi × N+ Σ(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 N = number of inputs switching Σ(C L × VCC 2 × f o) = sum of the outputs. 11. Waveforms For type 74AHCT86 tpd propagation delay nA, nB to nY; see Figure 6 [2] VCC = 4.5 V to 5.5 V CL = 15 pF - 3.4 6.9 1.0 8.0 1.0 9.0 ns CL = 50 pF - 4.9 8.8 1.0 10.0 1.0 11.0 ns CPD power dissipation capacitance CL = 50 pF; fi = 1 MHz; VI = GND to VCC [3] - 12.0 - - - - - pF Table 7. Dynamic characteristics …continued 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[1] Max Min Max Min Max Measurement points are given in Table 8. VOL and VOH are typical voltage output levels that occur with the output load. Fig 6. Propagation delay input (nA, nB) to output (nY) mna224 nA, nB input nY output tPLH tPHL GND VI VM VM VOH VOL Table 8. Measurement points Type Input Output VM VM 74AHC86 0.5VCC 0.5VCC 74AHCT86 1.5 V 0.5VCC |
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