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74AC541 데이터시트(PDF) 4 Page - STMicroelectronics

부품명 74AC541
상세설명  OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (NON INVERTED)
PDF  8 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

74AC541 데이터시트(HTML) 4 Page - STMicroelectronics

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CAPACITIVE CHARACTERISTICS
Symbo l
Parameter
Test Con dition s
Value
Uni t
VCC
(V)
T A =25
oC
-40 to 85
oC
Mi n.
T yp.
Max.
Min.
Max.
CIN
Input Capacitance
5.0
4
pF
COUT
Output Capacitance
5.0
8
pF
CPD
Power Dissipation
Capacitance (note 1)
5.0
21
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/8 (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
3.3
(*)
1.5
5
8
1.5
9
ns
5.0
(**)
1.546.5
1.5
7
tPZL
tPZH
Output Enable Time
3.3
(*)
1.5
7
10.5
1.5
11.5
ns
5.0
(**)
1.5
5
8
1.5
8.5
tPLZ
tPHZ
Output Disable Time
3.3
(*)
1.5
7
10.5
1.5
11.5
ns
5.0
(**)
1.5
6
9
1.5
9.5
(*) Voltage range is 3.3V
± 0.3V
(**) Voltage range is 5V
± 0.5V
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)
74AC541
4/8



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