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74AC240MTR 데이터시트(PDF) 4 Page - STMicroelectronics

부품명 74AC240MTR
상세설명  OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (INVERTED)
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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74AC240MTR 데이터시트(HTML) 4 Page - STMicroelectronics

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74AC240
4/9
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 Ω, Input tr = tf = 3ns)
(*) Voltage range is 3.3V
± 0.3V
(**) Voltage range is 5.0V
± 0.5V
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/8 (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.
tPLH tPHL Propagation Delay
Time
3.3(*)
1.5
5.7
8.0
1.5
9.0
1.5
11.0
ns
5.0(**)
1.5
4.2
6.5
1.5
7.0
1.5
8.5
tPZL tPZH Output Enable
Time
3.3(*)
1.5
7.0
10.5
1.5
11.0
1.5
13.0
ns
5.0(**)
1.5
5.0
8.0
1.5
8.5
1.5
10.5
tPLZ tPHZ Output Disable
Time
3.3(*)
1.5
7.0
10.5
1.5
11.5
1.5
13.5
ns
5.0(**)
1.5
6.5
9.0
1.5
9.5
1.5
11.0
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
COUT
Output
Capacitance
5.0
9
pF
CPD
Power Dissipation
Capacitance (note
1)
5.0
fIN = 10MHz
21
pF
TEST
SWITCH
tPLH, tPHL
Open
tPZL, tPLZ
2VCC
tPZH, tPHZ
Open


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