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74AHC123A Datasheet(PDF) 3 Page - NXP Semiconductors

Part No. 74AHC123A
Description  Dual retriggerable monostable multivibrator with reset
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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74AHC123A Datasheet(HTML) 3 Page - NXP Semiconductors

 
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2000 Mar 15
3
Philips Semiconductors
Product specification
Dual retriggerable monostable multivibrator
with reset
74AHC123A;
74AHCT123A
QUICK REFERENCE DATA
GND = 0 V; Tamb =25 °C; tr =tf ≤ 3.0 ns.
Notes
1. CPD is used to determine the dynamic power dissipation (PD in µW).
PD =CPD × VCC2 × fi + ∑ (CL × VCC2 × fo) × CEXT × VCC2 × fo +D × 16 × VCC where:
fi = input frequency in MHz;
fo = output frequency in MHz;
∑ (CL × VCC2 × fo) = sum of outputs;
D = duty factor in %;
CL = output load capacitance in pF;
CEXT = timing capacitance in pF;
VCC = supply voltage in Volts.
2. The condition is VI = GND to VCC.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
AHC
AHCT
tPHL/tPLH
propagation delay
CL = 15 pF; VCC =5V;
REXT =5kΩ; CEXT =0pF
nA, nB to nQ, nQ
5.1
5.0
ns
nRD to nQ, nQ
5.6
5.2
ns
CI
input capacitance
VI =VCC or GND
5
3
pF
CO
output capacitance
4
4
pF
CPD
power dissipation capacitance
CL = 50 pF; f = 1 MHz; notes 1
and 2
57
58
pF


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