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
74AC
74AC
VCC
(V)
TA = +25°C
TA =
−40°C to
+85°C
Unit
Typ Guaranteed Limits
3.0
1.5 2.1
2.1
4.5 2.25 3.15
3.15
V
5.5 2.75 3.85
3.85
3.0
1.5 0.9
0.9
4.5 2.25 1.35
1.35
V
5.5 2.75 1.65
1.65
3.0 2.99 2.9
2.9
4.5 4.49 4.4
4.4
V
5.5 5.49 5.4
5.4
VOL
Maximum Low Level
Output Voltage
3.0
− 2.56
2.46
4.5
− 3.86
3.76
V
5.5
− 4.86
4.76
3.0 0.002 0.1
0.1
4.5 0.001 0.1
0.1
V
5.5 0.001 0.1
0.1
3.0
− 0.36
0.44
4.5
− 0.36
0.44
V
5.5
− 0.36
0.44
IIN
Maximum Input
Leakage Current
5.5
− ±0.1
±1.0
mA
IOZ
Maximum
3−State
Current
5.5
− ±0.5
±5.0
mA
IOLD
IOHD
ICC
†Minimum Dynamic
Output Current
Maximum Quiescent
Supply Current
5.5
−
−
75
mA
5.5
−
−
−75
mA
5.5
−
8.0
80
mA
*All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.
NOTE: IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V VCC.
Conditions
VOUT = 0.1 V
or VCC − 0.1 V
VOUT = 0.1 V
or VCC − 0.1 V
IOUT = −50 mA
*VIN = VIL or VIH
−12 mA
IOH
−24 mA
−24 mA
IOUT = 50 mA
*VIN = VIL or VIH
12 mA
IOL
24 mA
24 mA
VI = VCC, GND
VI (OE) = VIL, VIH
VI = VCC, GND
VO = VCC, GND
VOLD = 1.65 V Max
VOHD = 3.85 V Min
VIN = VCC or GND
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