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74AC299 Datasheet(Hoja de datos) 7 Page - STMicroelectronics

No. de Pieza. 74AC299
Descripción  8 BIT PIPO SHIFT REGISTER WITH ASYNCHRONOUS CLEAR
Descarga  13 Pages
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Fabricante  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
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74AC299
7/13
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/n (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
10
10
pF
Ci/O
Bus Input
Capacitance
5.0
13
pF
CPD
Power Dissipation
Capacitance (note
1)
5.0
fIN = 10MHz
120
pF
TEST
SWITCH
tPLH, tPHL
Open
tPZL, tPLZ
2VCC
tPZH, tPHZ
Open




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