M74HCT257 Просмотр технического описания (PDF) - STMicroelectronics
Номер в каталоге
Компоненты Описание
Список матч
M74HCT257 Datasheet PDF : 10 Pages
| |||
M74HCT257
DC SPECIFICATIONS
Symbol
Parameter
VIH High Level Input
Voltage
VIL Low Level Input
Voltage
VOH
VOL
II
IOZ
ICC
∆ ICC
High Level Output
Voltage
Low Level Output
Voltage
Input Leakage
Current
High Impedance
Output Leakage
Current
Quiescent Supply
Current
Additional Worst
Case Supply
Current
Test Condition
VCC
(V)
4.5
to
5.5
4.5
to
5.5
IO=-20 µA
4.5
IO=-6.0 mA
4.5
IO=20 µA
IO=6.0 mA
5.5 VI = VCC or GND
Value
TA = 25°C
-40 to 85°C -55 to 125°C Unit
Min. Typ. Max. Min. Max. Min. Max.
2.0
2.0
2.0
V
0.8
0.8
0.8 V
4.4 4.5
4.4
4.4
V
4.18 4.31
4.13
4.10
0.0 0.1
0.17 0.26
0.1
0.33
0.1
V
0.40
± 0.1
±1
± 1 µA
5.5
VI = VIH or VIL
VO = VCC or GND
± 0.5
±5
± 10 µA
5.5 VI = VCC or GND
5.5
Per Input pin
VI = 0.5V or
VI = 2.4V
Other Inputs at
VCC or GND
IO = 0
4
40
80 µA
2.0
2.9
3.0 mA
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns)
Test Condition
Value
Symbol
Parameter
VCC
(V)
tTLH tTHL Output Transition
Time
4.5
tPLH tPHL Propagation Delay
Time
4.5
(A, B - Y)
tPLH tPHL Propagation Delay
Time
4.5
(SELECT - Y)
tPZL tPZH High Impedance
Output Enable
4.5
Time
tPLZ tPHZ High Impedance
Output Disable
4.5
Time
RL = 1 KΩ
RL = 1 KΩ
TA = 25°C
-40 to 85°C -55 to 125°C Unit
Min. Typ. Max. Min. Max. Min. Max.
7 12
15
18 ns
13 20
25
30 ns
13 20
25
30 ns
12 22
28
33 ns
14 28
35
42 ns
4/10
Share Link: 