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74HC240D 데이터시트(PDF) 7 Page - NXP Semiconductors |
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74HC240D 데이터시트(HTML) 7 Page - NXP Semiconductors |
7 / 18 page 74HC_HCT240_3 © NXP B.V. 2007. All rights reserved. Product data sheet Rev. 03 — 2 August 2007 7 of 18 NXP Semiconductors 74HC240; 74HCT240 Octal buffer/line driver; 3-state; inverting 10. Dynamic characteristics Table 7. Dynamic characteristics GND = 0 V; for load circuit see Figure 8. Symbol Parameter Conditions 25 °C −40 °C to +125 °C Unit Min Typ Max Max (85 °C) Max (125 °C) 74HC240 tpd propagation delay nAn to nYn; see Figure 6 [1] VCC = 2.0 V - 30 100 125 150 ns VCC = 4.5 V - 11 20 25 30 ns VCC = 5.0 V; CL =15pF - 9 - - - ns VCC = 6.0 V - 9 17 21 26 ns ten enable time nOE to nYn; see Figure 7 [2] VCC = 2.0 V - 39 150 190 225 ns VCC = 4.5 V - 14 30 38 45 ns VCC = 6.0 V - 11 26 33 38 ns tdis disable time nOE to nYn or see Figure 7 [3] VCC = 2.0 V - 41 150 190 225 ns VCC = 4.5 V - 15 30 38 45 ns VCC = 6.0 V - 12 26 33 38 ns tt transition time see Figure 6 [4] VCC = 2.0 V - 14 60 75 90 ns VCC = 4.5 V - 5 12 15 18 ns VCC = 6.0 V - 4 10 13 15 ns CPD power dissipation capacitance per transceiver; VI = GND to VCC [5] -30- - - pF |
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