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74HC123N Scheda tecnica(PDF) 8 Page - NXP Semiconductors |
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74HC123N Scheda tecnica(HTML) 8 Page - NXP Semiconductors |
8 / 17 page 1998 Jul 08 8 Philips Semiconductors Product specification Dual retriggerable monostable multivibrator with reset 74HC/HCT123 AC CHARACTERISTICS FOR 74HCT GND = 0 V; tr =tf = 6 ns; CL =50pF SYMBOL PARAMETER Tamb (°C) UNIT TEST CONDITIONS 74HCT VCC (V) WAVEFORMS/ NOTES +25 −40 to +85 −40 to +125 min. typ. max. min. max. min. max. tPHL propagation delay nRD, nA, nB to nQ 30 51 64 77 ns 4.5 CEXT = 0 pF; REXT =5kΩ tPLH propagation delay nRD, nA, nB to nQ 28 51 64 77 ns 4.5 CEXT = 0 pF; REXT =5kΩ tPHL propagation delay nRD to nQ (reset) 27 46 58 69 ns 4.5 CEXT = 0 pF; REXT =5kΩ tPLH propagation delay nRD to nQ (reset) 23 46 58 69 ns 4.5 CEXT = 0 pF; REXT =5kΩ tTHL / tTLH output transition time 7 15 19 22 ns 4.5 tW trigger pulse width nA = LOW 20 3 25 30 ns 4.5 Fig.7 tW trigger pulse width nB = HIGH 20 5 25 30 ns 4.5 Fig.7 tW reset pulse width nRD = LOW 20 7 25 30 ns 4.5 Fig.8 tW output pulse width nQ = HIGH nQ = LOW 450 −− µs 5.0 CEXT = 100 nF; REXT =10kΩ; Figs 7 and 8 tW output pulse width nQ = HIGH nQ = LOW 75 −− ns 5.0 CEXT = 0 pF; REXT =5kΩ; note 1; Figs 7 and 8 trt retrigger time nA, nB 110 −− ns 5.0 CEXT = 0 pF; REXT =5kΩ; note 2; Fig.7 REXT external timing resistor 2 1000 −− k Ω 5.0 Fig.9 CEXT external timing capacitor no limits pF 5.0 Fig.9; note 3 |
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