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74HCT423 Datasheet(PDF) 8 Page - NXP Semiconductors |
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74HCT423 Datasheet(HTML) 8 Page - NXP Semiconductors |
8 / 23 page 74HC_HCT423_3 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 03 — 24 July 2008 8 of 23 NXP Semiconductors 74HC423; 74HCT423 Dual retriggerable monostable multivibrator with reset 10. Dynamic characteristics Table 7. Dynamic characteristics GND = 0 V; test circuit see Figure 12. Symbol Parameter Conditions 25 °C −40 °Cto +85 °C −40 °Cto +125 °C Unit Min Typ Max Min Max Min Max 74HC423 tpd propagation delay nA or nB to nQ or nQ; REXT =5kΩ; CEXT = 0 pF; see Figure 7 [1] VCC = 2.0 V - 80 255 - 320 - 385 ns VCC = 4.5 V - 29 51 - 64 - 77 ns VCC = 5.0 V; CL = 15 pF - 25 - ---- ns VCC = 6.0 V - 23 43 - 54 - 65 ns nRD to nQ or nQ; see Figure 7 [1] VCC = 2.0 V - 66 215 - 270 - 325 ns VCC = 4.5 V - 24 43 - 54 - 65 ns VCC = 5.0 V; CL = 15 pF - 20 - ---- ns VCC = 6.0 V - 19 37 - 46 - 55 ns tt transition time see Figure 7 [2] VCC = 2.0 V - 19 75 - 95 - 110 ns VCC = 4.5 V - 7 15 - 19 - 22 ns VCC = 6.0 V - 6 13 - 16 - 19 ns tW pulse width nA input LOW; see Figure 7 and Figure 8 VCC = 2.0 V 100 11 - 125 - 150 - ns VCC = 4.5 V 20 4 - 25 - 30 - ns VCC = 6.0 V 17 3 - 21 - 26 - ns nB input HIGH; see Figure 7 and Figure 8 VCC = 2.0 V 100 17 - 125 - 150 - ns VCC = 4.5 V 20 6 - 25 - 30 - ns VCC = 6.0 V 17 5 - 21 - 26 - ns nRD input LOW; see Figure 7 and Figure 8 VCC = 2.0 V 100 14 - 125 - 150 - ns VCC = 4.5 V 20 5 - 25 - 30 - ns VCC = 6.0 V 17 4 - 21 - 26 - ns nQ HIGH or nQ LOW; VCC = 5.0 V; REXT =10kΩ; CEXT = 100 nF; see Figure 7 and Figure 8 - 450 - ---- µs nQ HIGH or nQ LOW; VCC = 5.0 V; REXT =5kΩ; CEXT = 0 pF; VI = GND to VCC; see Figure 7 and Figure 8 [3] - 75 - ---- ns trtrig retrigger time nA or nB input; VCC = 5.0 V; REXT =5kΩ; CEXT = 0 pF; see Figure 10 [4] - 110 - ---- ns |
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