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M74HCT244 Fiches technique(PDF) 4 Page - STMicroelectronics

No de pièce M74HCT244
Description  OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (NON INVERTED)
PDF  9 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M74HCT244 Fiches technique(HTML) 4 Page - STMicroelectronics

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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/8 (per circuit)
TEST CIRCUIT
CL = 50pF/150pF or equivalent (includes jig and probe capacitance)
R1 = 1KΩ or equivalent
RT = ZOUT of pulse generator (typically 50Ω)
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
101010
pF
COUT
Output
Capacitance
10
pF
CPD
Power Dissipation
Capacitance (note
1)
31
pF
TEST
SWITCH
tPLH, tPHL
Open
tPZL, tPLZ
VCC
tPZH, tPHZ
GND



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