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74HC245N Datasheet(PDF) 10 Page - NXP Semiconductors |
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74HC245N Datasheet(HTML) 10 Page - NXP Semiconductors |
10 / 22 page 9397 750 14502 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 03 — 31 January 2005 10 of 22 Philips Semiconductors 74HC245; 74HCT245 Octal bus tranceiver; 3-state 11. Dynamic characteristics ICC quiescent supply current VI =VCC or GND; IO =0A; VCC = 5.5 V - - 160 µA ∆ICC additional quiescent supply current per input pin VI =VCC − 2.1 V; other inputs at VI =VCC or GND; VCC = 4.5 V to 5.5 V; IO =0A An or Bn inputs - - 196 µA OE input - - 735 µA DIR input - - 441 µA Table 8: Static characteristics type 74HCT245 …continued At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions Min Typ Max Unit Table 9: Dynamic characteristics type 74HC245 GND = 0 V; test circuit see Figure 7. Symbol Parameter Conditions Min Typ Max Unit Tamb = 25 °C tPHL, tPLH propagation delay An to Bn or Bn to An see Figure 5 VCC = 2.0 V - 25 90 ns VCC = 4.5 V - 9 18 ns VCC = 5.0 V; CL =15pF - 7 - ns VCC = 6.0 V - 7 15 ns tPZH, tPZL 3-state output enable time OE to An or OE to Bn see Figure 6 VCC = 2.0 V - 30 150 ns VCC = 4.5 V - 11 30 ns VCC = 6.0 V - 9 26 ns tPHZ, tPLZ 3-state output disable time OE to An or OE to Bn see Figure 6 VCC = 2.0 V - 41 150 ns VCC = 4.5 V - 15 30 ns VCC = 6.0 V - 12 26 ns tTHL, tTLH output transition time see Figure 5 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 per transceiver VI = GND to VCC [1] -30 - pF Tamb = −40 °C to +85 °C tPHL, tPLH propagation delay An to Bn or Bn to An see Figure 5 VCC = 2.0 V - - 115 ns VCC = 4.5 V - - 23 ns VCC = 6.0 V - - 20 ns |
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