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74LVC373A bảng dữ liệu(PDF) 4 Page - STMicroelectronics

tên linh kiện 74LVC373A
Giải thích chi tiết về linh kiện  OCTAL D-TYPE LATCH HIGH PERFORMANCE
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Table 7: Dynamic Switching Characteristics
1) Number of output defined as "n". Measured with "n-1" outputs switching from HIGH to LOW or LOW to HIGH. The remaining output is
measured in the LOW state.
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
Symbol
Parameter
Test Condition
Value
Unit
VCC
(V)
TA = 25 °C
Min.
Typ.
Max.
VOLP
Dynamic Low Level Quiet
Output (note 1)
3.3
CL = 50pF
VIL = 0V, VIH = 3.3V
0.8
V
VOLV
-0.8
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



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