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74VHC27 Datasheet(PDF) 4 Page - STMicroelectronics

No. de pieza 74VHC27
Descripción Electrónicos  TRIPLE 3-INPUT NOR GATE
PDF  10 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

74VHC27 Datasheet(HTML) 4 Page - STMicroelectronics

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Table 8: Capacitive Characteristics
1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/3 (per gate)
Figure 3: Test Circuit
CL =15/50pF or equivalent (includes jig and probe capacitance)
RT = ZOUT of pulse generator (typically 50Ω)
Figure 4: Waveform - Propagation Delays (f=1MHz; 50% duty cycle)
Symbol
Parameter
Test Condition
Value
Unit
TA = 25°C
-40 to 85°C
-55 to 125°C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
CIN
Input Capacitance
610
10
10
pF
CPD
Power Dissipation
Capacitance
(note 1)
17
pF



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