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M54HCT540 Datasheet(PDF) 6 Page - STMicroelectronics

Part # M54HCT540
Description  OCTAL BUS BUFFER WITH 3 STATE OUTPUTS HCT540: INVERTED - HCT541 NON INVERTED
PDF  12 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M54HCT540 Datasheet(HTML) 6 Page - STMicroelectronics

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TEST CIRCUIT ICC (Opr.)
HCT540
AC ELECTRICAL CHARACTERISTICS (CL =50 pF, Input tr =tf =6 ns)
Symbol
Parameter
Test Conditions
Value
Unit
VCC
(V)
CL
(pF)
TA =25
oC
54HC and 74HC
-40 to 85
oC
74HC
-55 to 125
oC
54HC
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
tTLH
tTHL
Output Transition
Time
4.5
50
6
12
15
18
ns
tPLH
tPHL
Propagation
Delay Time
(for HCT540)
4.5
50
12
20
25
30
ns
4.5
150
16
25
31
38
ns
tPLH
tPHL
Propagation
Delay Time
(for HCT541)
4.5
50
14
23
29
35
ns
4.5
150
18
28
35
42
ns
tPZL
tPZH
Output Enable
Time
4.5
50
RL =1K
Ω
18
30
38
45
ns
4.5
150
RL =1K
Ω
22
34
43
51
ns
tPLZ
tPHZ
Output Disable
Time
4.5
50
RL =1K
Ω
19
27
34
41
ns
CIN
Input Capacitance
5
10
10
10
pF
CPD (*)
Power Dissipation
Capacitance
34
pF
(*) 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 operting current can be obtained by the following equation. ICC(opr) = CPD
•VCC •fIN +ICC/8 (per gate)
M54/M74HCT540/541
6/12



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