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74ACT245B Arkusz danych(PDF) 4 Page - STMicroelectronics

Numer części 74ACT245B
Szczegółowy opis  OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS (NON INVERTED)
PDF  9 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

74ACT245B Arkusz danych(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/16 (per
circuit)
TEST CIRCUIT
CL = 50pF or equivalent (includes jig and probe capacitance)
RL = R1 = 500Ω 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
5.0
5
pF
CI/O
I/O Capacitance
5.0
10
pF
CPD
Power Dissipation
Capacitance (note
1)
5.0
fIN = 10MHz
23
pF
TEST
SWITCH
tPLH, tPHL
Open
tPZL, tPLZ
2VCC
tPZH, tPHZ
Open



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