74AC257 Просмотр технического описания (PDF) - ON Semiconductor
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74AC257 Datasheet PDF : 12 Pages
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MC74AC257, MC74ACT257
DC CHARACTERISTICS
Symbol
Parameter
VIH
Minimum High Level
Input Voltage
VIL
Maximum Low Level
Input Voltage
VOH
Minimum High Level
Output Voltage
74ACT
74ACT
VCC
(V)
TA = +25°C
TA =
−40°C to
+85°C
Typ Guaranteed Limits
4.5
1.5 2.0
2.0
5.5
1.5 2.0
2.0
4.5
1.5 0.8
0.8
5.5
1.5 0.8
0.8
4.5 4.49 4.4
4.4
5.5 5.49 5.4
5.4
VOL
Maximum Low Level
Output Voltage
4.5
− 3.86
3.76
5.5
− 4.86
4.76
4.5 0.001 0.1
0.1
5.5 0.001 0.1
0.1
4.5
− 0.36
0.44
5.5
− 0.36
0.44
IIN
Maximum Input
Leakage Current
5.5
− ±0.1
±1.0
DICCT
IOZ
Additional Max. ICC/Input
Maximum
3−State
Current
5.5
0.6
−
1.5
5.5
− ±0.5
±5.0
IOLD
IOHD
ICC
†Minimum Dynamic
Output Current
Maximum Quiescent
Supply Current
5.5
−
−
75
5.5
−
−
−75
5.5
−
8.0
80
*All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.
Unit
Conditions
V
VOUT = 0.1 V
or VCC − 0.1 V
V
VOUT = 0.1 V
or VCC − 0.1 V
V
IOUT = −50 mA
*VIN = VIL or VIH
V
−24 mA
IOH
−24 mA
V
IOUT = 50 mA
*VIN = VIL or VIH
V
IOL
24 mA
24 mA
mA
VI = VCC, GND
mA
VI = VCC − 2.1 V
VI (OE) = VIL, VIH
mA
VI = VCC, GND
VO = VCC, GND
mA
VOLD = 1.65 V Max
mA
VOHD = 3.85 V Min
mA
VIN = VCC or GND
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