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74HC423N Datasheet(PDF) 9 Page - NXP Semiconductors |
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74HC423N Datasheet(HTML) 9 Page - NXP Semiconductors |
9 / 24 page 74HC_HCT423 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved. Product data sheet Rev. 6 — 19 December 2011 9 of 24 NXP Semiconductors 74HC423; 74HCT423 Dual retriggerable monostable multivibrator with reset REXT external timing resistor VCC =2.0 V; see Figure 8 10 - 1000 - - - - k VCC =5.0 V 2 - 1000 - - - - k CEXT external timing capacitor VCC =5.0 V; see Figure 8 [5] no limits pF CPD power dissipation capacitance per package; VI =GND to VCC [6] - 54 - -- -- pF 74HCT423 tpd propagation delay nA or nB to nQ or nQ; REXT =5k; CEXT = 0 pF; see Figure 7 VCC =4.5 V [1] -30 51 - 64 - 77 ns VCC =5.0 V; CL =15pF [1] - 26 - -- -- ns nRD to nQ or nQ; REXT =5k; CEXT = 0 pF; see Figure 7 [1] -26 48 - 60 - 72 ns VCC =4.5 V [1] -26 48 - 60 - 72 ns VCC =5.0 V; CL =15pF [1] - 22 - -- -- ns tt transition time VCC = 4.5 V; Figure 7 [2] - 7 15 - 19 - 22 ns tW pulse width trigger pulse; nA input LOW; VCC = 4.5 V; see Figure 7 and Figure 10 20 5 - 25 - 30 - ns trigger pulse; nB input HIGH; VCC = 4.5 V; see Figure 7 and Figure 10 20 5 - 25 - 30 - ns reset pulse; nRD input LOW; VCC = 4.5 V; see Figure 7 and Figure 11 20 7 - 25 - 30 - ns output pulse; nQ HIGH or nQ LOW; VCC =5.0 V; REXT =10k; CEXT =100 nF; see Figure 7, Figure 10 and Figure 11 - 450 - - - - - s output pulse; nQ HIGH or nQ LOW; VCC = 5.0 V; REXT =5k; CEXT =0pF; VI = GND to VCC 1.5 V; see Figure 7, Figure 10 and Figure 11 [3] - 75 - -- -- ns trtrig retrigger time nA or nB input; VCC =5.0 V; REXT =5k; CEXT = 0 pF; see Figure 10 -110 - - - - - ns REXT external timing resistor VCC =5.0 V; see Figure 8 2 - 1000 - - - - k CEXT external timing capacitor VCC =5.0 V; see Figure 8 [5] no limits pF Table 7. Dynamic characteristics …continued GND = 0 V; test circuit see Figure 12. Symbol Parameter Conditions 25 C 40 C to +85 C 40 C to +125 C Unit Min Typ Max Min Max Min Max |
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