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M54HC157 Scheda tecnica(PDF) 5 Page - STMicroelectronics

Il numero della parte M54HC157
Spiegazioni elettronici  RAD-HARD QUAD 2 CHANNEL MULTIPLEXER
PDF  9 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M54HC157 Scheda tecnica(HTML) 5 Page - STMicroelectronics

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Table 7: 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 xVCC xfIN +ICC/4(per chan-
nel)
Figure 4: Test Circuit
CL = 50pF or equivalent (includes jig and probe capacitance)
RT =ZOUT of pulse generator (typically 50Ω)
Figure 5: Waveform - Propagation Delay Times (f=1MHz; 50% duty cycle)
Symbol
Parameter
Test Condition
Value
Unit
VCC
(V)
TA = 25°C
-40 to 85°C
-55 to 125°C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
CIN
Input Capacitance
5.0
5
10
10
10
pF
CPD
Power Dissipation
Capacitance (note
1)
5.0
47
pF



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