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74VHCT257A Fiches technique(PDF) 4 Page - STMicroelectronics

No de pièce 74VHCT257A
Description  QUAD 2 CHANNEL MULTIPLEXER (3-STATE)
Download  13 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

74VHCT257A Fiches technique(HTML) 4 Page - STMicroelectronics

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Table 6: DC Specifications
Table 7: AC Electrical Characteristics (Input tr = tf = 3ns)
(*) Voltage range is 5.0V
± 0.5V
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.
VIH
High Level Input
Voltage
4.5 to
5.5
22
2
V
VIL
Low Level Input
Voltage
4.5 to
5.5
0.8
0.8
0.8
V
VOH
High Level Output
Voltage
4.5
IO=-50 µA
4.4
4.5
4.4
4.4
V
4.5
IO=-8 mA
3.94
3.8
3.7
VOL
Low Level Output
Voltage
4.5
IO=50 µA
0.0
0.1
0.1
0.1
V
4.5
IO=8 mA
0.36
0.44
0.55
IOZ
High Impedance
Output Leakage
Current
5.5
VI = VIH or VIL
VO = 0V to 5.5V
±0.25
± 2.5
± 2.5
µA
II
Input Leakage
Current
0 to
5.5
VI = 5.5V or GND
± 0.1
± 1.0
± 1.0
µA
ICC
Quiescent Supply
Current
5.5
VI = VCC or GND
440
40
µA
+ICC
Additional Worst
Case Supply
Current
5.5
One Input at 3.4V,
other input at VCC
or GND
1.35
1.5
1.5
mA
IOPD
Output Leakage
Current
0
VOUT = 5.5V
0.5
5.0
5.0
µA
Symbol
Parameter
Test Condition
Value
Unit
VCC (*)
(V)
CL
(pF)
TA = 25°C
-40 to 85°C
-55 to 125°C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
tPLH
tPHL
Propagation Delay
Time A, B, to Y
5.0
15
4.8
7.0
1.0
8.0
1.0
8.0
ns
5.0
50
5.5
8.0
1.0
9.0
1.0
9.0
tPLH
tPHL
Propagation Delay
Time SELECT to Y
5.0
15
6.0
6.8
1.0
8.0
1.0
8.0
ns
5.0
50
7.0
8.8
1.0
10.0
1.0
10.0
tPZL
tPZH
Output Enable
Time
5.0
15
5.8
6.8
1.0
8.0
1.0
8.0
ns
5.0
50
6.5
8.8
1.0
10.0
1.0
10.0
tPLZ
tPHZ
Output Disable
Time
5.0
50
5.7
7.9
1.0
9.0
1.0
9.0
ns


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