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74LVC374A Scheda tecnica(PDF) 5 Page - STMicroelectronics

Il numero della parte 74LVC374A
Spiegazioni elettronici  OCTAL D-TYPE FLIP-FLOP HIGH PERFORMANCE
PDF  14 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

74LVC374A Scheda tecnica(HTML) 5 Page - STMicroelectronics

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Table 8: AC Electrical Characteristics
1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch-
ing in the same direction, either HIGH or LOW (tOSLH = | tPLHm - tPLHn|, tOSHL = | tPHLm - tPHLn|
2) Parameter guaranteed by design
Table 9: 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/n (per circuit)
Symbol
Parameter
Test Condition
Value
Unit
VCC
(V)
CL
(pF)
RL
(
Ω)
ts = tr
(ns)
-40 to 85 °C
-55 to 125 °C
Min.
Max.
Min.
Max.
tPLH tPHL
Propagation Delay
Time D to Q
1.65 to 1.95
30
1000
2.0
TBD
TBD
ns
2.3 to 2.7
30
500
2.0
TBD
TBD
2.7
50
500
2.5
1.5
7.8
1.5
9.4
3.0 to 3.6
50
500
2.5
1
6.8
1
8.2
tPLH tPHL
Propagation Delay
Time LE to Q
1.65 to 1.95
30
1000
2.0
TBD
TBD
ns
2.3 to 2.7
30
500
2.0
TBD
TBD
2.7
50
500
2.5
1.5
7.8
1.5
9.4
3.0 to 3.6
50
500
2.5
1
6.8
1
8.2
tPZL tPZH
Output Enable Time
1.65 to 1.95
30
1000
2.0
TBD
TBD
ns
2.3 to 2.7
30
500
2.0
TBD
TBD
2.7
50
500
2.5
1
8.7
1
10.4
3.0 to 3.6
50
500
2.5
1
7.7
1
9.2
tPLZ tPHZ
Output Disable Time 1.65 to 1.95
30
1000
2.0
TBD
TBD
ns
2.3 to 2.7
30
500
2.0
TBD
TBD
2.7
50
500
2.5
2
7.6
2
9.1
3.0 to 3.6
50
500
2.5
2
7.0
2
8.4
tW
LE Pulse Width
HIGH
1.65 to 1.95
30
1000
2.0
TBD
TBD
ns
2.3 to 2.7
30
500
2.0
TBD
TBD
2.7
50
500
2.5
3.3
3.3
3.0 to 3.6
50
500
2.5
3.3
3.3
ts
Setup Time D to LE
(HIGH to LOW)
1.65 to 1.95
30
1000
2.0
TBD
TDB
ns
2.3 to 2.7
30
500
2.0
TBD
TBD
2.7
50
500
2.5
2
2
3.0 to 3.6
50
500
2.5
2
2
th
Hold Time D to
CLOCK, HIGH or
LOW
1.65 to 1.95
30
1000
2.0
TBD
TBD
ns
2.3 to 2.7
30
500
2.0
TBD
TBD
2.7
50
500
2.5
1.5
1.5
3.0 to 3.6
50
500
2.5
1.5
1.5
tOSLH
tOSHL
Output To Output
Skew Time (note1,
2)
2.7 to 3.6
1
1
ns
Symbol
Parameter
Test Condition
Value
Unit
VCC
(V)
TA = 25 °C
Min.
Typ.
Max.
CIN
Input Capacitance
4pF
CPD
Power Dissipation Capacitance
(note 1)
1.8
fIN = 10MHz
28
pF
2.5
30
3.3
34



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