전자부품 데이터시트 검색엔진 |
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74HCT423 데이터시트(PDF) 9 Page - NXP Semiconductors |
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74HCT423 데이터시트(HTML) 9 Page - NXP Semiconductors |
9 / 23 page 74HC_HCT423_3 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 03 — 24 July 2008 9 of 23 NXP Semiconductors 74HC423; 74HCT423 Dual retriggerable monostable multivibrator with reset REXT external timing resistor VCC = 2.0 V; see Figure 8 10 - 1000 ---- k Ω VCC = 5.0 V 2 - 1000 ---- k Ω 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 =5kΩ; 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 =5kΩ; 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 =10kΩ; CEXT = 100 nF; see Figure 7, Figure 10 and Figure 11 - 450 - ---- µs output pulse; nQ HIGH or nQ LOW; VCC = 5.0 V; REXT =5kΩ; CEXT = 0 pF; 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 =5kΩ; CEXT = 0 pF; see Figure 10 - 110 - ---- ns REXT external timing resistor VCC = 5.0 V; see Figure 8 2 - 1000 ---- k Ω 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 °Cto +85 °C −40 °Cto +125 °C Unit Min Typ Max Min Max Min Max |
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