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74ACT157B 数据表(PDF) 4 Page - STMicroelectronics

部件名 74ACT157B
功能描述  QUAD 2 CHANNEL MULTIPLEXER
PDF  8 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

74ACT157B 数据表(HTML) 4 Page - STMicroelectronics

  74ACT157B Datasheet HTML 1Page - STMicroelectronics 74ACT157B Datasheet HTML 2Page - STMicroelectronics 74ACT157B Datasheet HTML 3Page - STMicroelectronics 74ACT157B Datasheet HTML 4Page - STMicroelectronics 74ACT157B Datasheet HTML 5Page - STMicroelectronics 74ACT157B Datasheet HTML 6Page - STMicroelectronics 74ACT157B Datasheet HTML 7Page - STMicroelectronics 74ACT157B Datasheet HTML 8Page - STMicroelectronics  
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TEST CIRCUIT
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500
Ω, Input tr =tf =3 ns)
Symbol
Parameter
T est Cond iti on
Value
Unit
VCC
(V)
TA =25
oC-40 to 85 oC
Mi n.
Typ.
Max.
Min .
Max.
tPLH
tPHL
Propagation Delay Time
SELECT to Y
5.0
(*)
1.5
5.5
9.0
1.0
10.0
ns
tPLH
tPHL
Propagation Delay Time
STROBE to Y
5.0
(*)
1.55.0
8.51.0
9.0
ns
tPLH
tPHL
Propagation Delay Time
A, B to Y
5.0
(*)
1.54.0
7.01.0
8.5
ns
(*) Voltage range is 5V
± 0.5V
CAPACITIVE CHARACTERISTICS
Symbol
Parameter
Test Con dition s
Value
Unit
VCC
(V)
TA =25
oC-40 to 85 oC
Mi n.
Typ.
Max.
Min .
Max.
CIN
Input Capacitance
5.0
4
pF
CPD
Power Dissipation
Capacitance (note 1)
5.0
TDB
pF
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
• VCC • fIN +ICC/n (per circuit)
74ACT157
4/8



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