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74LVC2G07GS データシート(PDF) 7 Page - NXP Semiconductors |
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74LVC2G07GS データシート(HTML) 7 Page - NXP Semiconductors |
7 / 18 page 74LVC2G07 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved. Product data sheet Rev. 7 — 4 July 2012 7 of 18 NXP Semiconductors 74LVC2G07 Buffers with open-drain outputs 11. 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 tPLZ and tPZL. [3] CPD is used to determine the dynamic power dissipation (PD in W). 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. 12. Waveforms Table 8. 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 3.5 6.7 1.0 8.4 ns VCC = 2.3 V to 2.7 V 0.5 2.4 4.3 0.5 5.5 ns VCC = 2.7 V 1.0 2.3 4.2 1.0 5.3 ns VCC = 3.0 V to 3.6 V 0.5 2.6 3.7 0.5 4.7 ns VCC = 4.5 V to 5.5 V 0.5 1.5 2.9 0.5 3.7 ns CPD power dissipation capacitance VI = GND to VCC; VCC = 3.3 V [3] -6.5 - - - pF Measurement points are given in Table 9. VOL is the typical output voltage drop that occur with the output load. Fig 7. The input (nA) to output (nY) propagation delays mna528 tPLZ VX nY output nA input VI VCC VM VM VOL GND tPZL VM |
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