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74ACT244 Arkusz danych(PDF) 4 Page - STMicroelectronics

Numer części 74ACT244
Szczegółowy opis  OCTAL BUS BUFFER 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

74ACT244 Arkusz danych(HTML) 4 Page - STMicroelectronics

  74ACT244 Datasheet HTML 1Page - STMicroelectronics 74ACT244 Datasheet HTML 2Page - STMicroelectronics 74ACT244 Datasheet HTML 3Page - STMicroelectronics 74ACT244 Datasheet HTML 4Page - STMicroelectronics 74ACT244 Datasheet HTML 5Page - STMicroelectronics 74ACT244 Datasheet HTML 6Page - STMicroelectronics 74ACT244 Datasheet HTML 7Page - STMicroelectronics 74ACT244 Datasheet HTML 8Page - STMicroelectronics 74ACT244 Datasheet HTML 9Page - STMicroelectronics  
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TEST CIRCUIT
T EST
SW IT CH
tPLH,tPHL
Open
tPZL,tPLZ
2VCC
tPZH,tPHZ
Open
CL = 50 pF or equivalent (includes jigand probe capacitance)
RL =R1 =500
Ω orequivalent
RT =ZOUT of pulse generator (typically 50
Ω)
CAPACITIVE CHARACTERISTICS
Symb ol
Parameter
Test Co nditi ons
Valu e
Un it
VCC
(V)
TA =25
oC
-40 to 85
oC
Min.
T yp.
Max.
Mi n.
Max.
CIN
Input Capacitance
5.0
4
pF
Ci/o
I/O Capacitance
5.0
8
pF
CPD
Power Dissipation
Capacitance (note 1)
5.0
24
pF
1) CPD isdefined as the value of the IC’sinternal equivalent capacitance which is calculated fromthe operating current consumption without load. (Referto
Test Circuit).Average operating current can be obtained by the following equation. ICC(opr) = CPD
• VCC • fIN +ICC/n (per circuit)
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500
Ω, Input tr =tf =3 ns)
Symb ol
Parameter
T est Con ditio n
Valu e
Un it
VCC
(V)
TA =25
oC
-40 to 85
oC
Min.
T yp.
Max.
Mi n.
Max.
tPLH
tPHL
Propagation Delay Time
5.0
(*)
1.5
4.5
9.0
1.5
10.0
ns
tPZL
tPZH
Output Enable Time
5.0
(*)
1.5
5.5
9.0
1.5
10.0
ns
tPLZ
tPHZ
Output Disable Time
5.0
(*)
1.5
6.5
10.0
1.5
11.0
ns
(*) Voltage range is 5V
± 0.5V
74ACT244
4/9



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