поискавой системы для электроныых деталей |
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74LV138 датащи(PDF) 7 Page - NXP Semiconductors |
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74LV138 датащи(HTML) 7 Page - NXP Semiconductors |
7 / 17 page 74LV138_3 © NXP B.V. 2007. All rights reserved. Product data sheet Rev. 03 — 15 November 2007 7 of 17 NXP Semiconductors 74LV138 3-to-8 line decoder/demultiplexer; inverting 10. Dynamic characteristics [1] All typical values are measured at Tamb =25 °C. [2] tpd is the same as tPLH and tPHL. [3] Typical values are measured at nominal supply voltage (VCC = 3.3 V). [4] 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 V N = number of inputs switching Σ(C L × VCC 2 × f o) = sum of the outputs. Table 7. Dynamic characteristics GND = 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 An to Yn; see Figure 6 [2] VCC = 1.2 V - 75 - - - ns VCC = 2.0 V - 26 44 - 55 ns VCC = 2.7 V - 19 31 - 39 ns VCC = 3.0 V to 3.6 V; CL =15pF [3] -12 - - - ns VCC = 3.0 V to 3.6 V [3] - 15 26 - 32 ns VCC = 4.5 V to 5.5 V - - 17 - 22 ns E3, En to Yn; see Figure 6 and Figure 7 VCC = 1.2 V - 75 - - - ns VCC = 2.0 V - 26 43 - 53 ns VCC = 2.7 V - 19 30 - 38 ns VCC = 3.0 V to 3.6 V; CL =15pF [3] -14 - - - ns VCC = 3.0 V to 3.6 V [3] - 15 25 - 31 ns VCC = 4.5 V to 5.5 V - - 19 - 24 ns CPD power dissipation capacitance CL = 50 pF; fi = 1 MHz; VI = GND to VCC [4] -45 - - - pF |
Аналогичный номер детали - 74LV138_15 |
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Аналогичное описание - 74LV138_15 |
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