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74HCT244 Arkusz danych(PDF) 10 Page - NXP Semiconductors |
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74HCT244 Arkusz danych(HTML) 10 Page - NXP Semiconductors |
10 / 22 page 74HC_HCT244_3 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 03 — 22 December 2005 10 of 22 Philips Semiconductors 74HC244; 74HCT244 Octal buffer/line driver; 3-state 11. Dynamic characteristics Table 9: Dynamic characteristics 74HC244 GND = 0 V; tr =tf = 6 ns; CL = 50 pF unless otherwise specified; for test circuit see Figure 8. Symbol Parameter Conditions Min Typ Max Unit Tamb = 25 °C tPHL, tPLH propagation delay nAn to nYn see Figure 6 VCC = 2.0 V - 30 110 ns VCC = 4.5 V - 11 22 ns VCC = 5 V; CL =15pF - 9 - ns VCC = 6.0 V - 9 19 ns tPZH, tPZL 3-state output enable time nOE to nYn see Figure 7 VCC = 2.0 V - 36 150 ns VCC = 4.5 V - 13 30 ns VCC = 6.0 V - 10 26 ns tPHZ, tPLZ 3-state output disable time nOE to nYn see Figure 7 VCC = 2.0 V - 39 150 ns VCC = 4.5 V - 14 30 ns VCC = 6.0 V - 11 26 ns tTHL, tTLH output transition time see Figure 6 VCC = 2.0 V - 14 60 ns VCC = 4.5 V - 5 12 ns VCC = 6.0 V - 4 10 ns CPD power dissipation capacitance VI = GND to VCC [1] -35 - pF Tamb = −40 °C to +85 °C tPHL, tPLH propagation delay nAn to nYn see Figure 6 VCC = 2.0 V - - 145 ns VCC = 4.5 V - - 28 ns VCC = 6.0 V - - 24 ns tPZH, tPZL 3-state output enable time nOE to nYn see Figure 7 VCC = 2.0 V - - 190 ns VCC = 4.5 V - - 38 ns VCC = 6.0 V - - 33 ns tPHZ, tPLZ 3-state output disable time nOE to nYn see Figure 7 VCC = 2.0 V - - 190 ns VCC = 4.5 V - - 38 ns VCC = 6.0 V - - 33 ns tTHL, tTLH output transition time see Figure 6 VCC = 2.0 V - - 75 ns VCC = 4.5 V - - 15 ns VCC = 6.0 V - - 13 ns |
Podobny numer części - 74HCT244 |
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Podobny opis - 74HCT244 |
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