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74VHC_VHCT125 Fiches technique(PDF) 7 Page - NXP Semiconductors |
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74VHC_VHCT125 Fiches technique(HTML) 7 Page - NXP Semiconductors |
7 / 15 page 74VHC_VHCT125_2 © NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 — 13 October 2009 7 of 15 NXP Semiconductors 74VHC125; 74VHCT125 Quad buffer/line driver; 3-state [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. ten is the same as tPZL and tPZH. tdis is the same as tPLZ and tPHZ. [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 74VHCT125 tpd propagation delay nA to nY; see Figure 6 [2] VCC = 4.5 V to 5.5 V CL = 15 pF - 3.0 5.5 1.0 6.5 1.0 7.0 ns CL = 50 pF - 4.3 7.5 1.0 8.5 1.0 9.5 ns ten enable time nOE to nY; see Figure 7 VCC = 4.5 V to 5.5 V CL = 15 pF - 3.4 5.1 1.0 6.0 1.0 6.5 ns CL = 50 pF - 4.9 7.3 1.0 8.3 1.0 9.5 ns tdis disable time nOE to nY; see Figure 7 [2] VCC = 4.5 V to 5.5 V CL = 15 pF - 4.5 6.8 1.0 8.0 1.0 8.5 ns CL = 50 pF - 6.5 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 - - - - - pF Table 7. Dynamic characteristics …continued GND = 0 V; For test circuit see Figure 8. 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) to output (nY) mna230 tPHL tPLH VM VM nA input nY output GND VI VOH VOL |
Numéro de pièce similaire - 74VHC_VHCT125_15 |
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Description similaire - 74VHC_VHCT125_15 |
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