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74LVC2G14GF Datasheet(PDF) 7 Page - NXP Semiconductors |
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74LVC2G14GF Datasheet(HTML) 7 Page - NXP Semiconductors |
7 / 17 page 74LVC2G14_4 © NXP B.V. 2007. All rights reserved. Product data sheet Rev. 04 — 4 September 2007 7 of 17 NXP Semiconductors 74LVC2G14 Dual inverting Schmitt trigger with 5 V tolerant input 12. Dynamic characteristics [1] Typical values are measured at Tamb =25 °C and VCC = 1.8 V, 2.5 V, 2.7 V, 3.3 V and 5.0 V respectively. [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+ ∑(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. 13. Waveforms Table 9. Dynamic characteristics Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 8. Symbol Parameter Conditions −40 °C to +85 °C −40 °C to +125 °C Unit Min Typ[1] Max Min Max tpd propagation delay nA to nY; see Figure 7 [2] VCC = 1.65 V to 1.95 V 1.0 5.6 11.0 1.0 12.0 ns VCC = 2.3 V to 2.7 V 0.5 3.7 6.5 0.5 7.2 ns VCC = 2.7 V 0.5 4.1 7.0 0.5 7.7 ns VCC = 3.0 V to 3.6 V 0.5 3.9 6.0 0.5 6.7 ns VCC = 4.5 V to 5.5 V 0.5 2.7 4.3 0.5 4.7 ns CPD power dissipation capacitance VI = GND to VCC; VCC = 3.3 V [3] - 18.1 - - - pF Measurement points are given in Table 10. VOL and VOH are typical output voltage levels that occur with the output load. Fig 7. The data input (nA) to output (nY) propagation delays mna344 tPHL tPLH VM VM VM VM nA input nY output GND VI VOH VOL |
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