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MC74AC244 Datasheet(Folha de dados) 4 Page - ON Semiconductor

Nome de Peças. MC74AC244
descrição  Octal Buffer/Line Driver with 3-State Outputs
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MC74AC244, MC74ACT244
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4
AC CHARACTERISTICS (For Figures and Waveforms – See Section 3)
74AC
74AC
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85
°C
CL = 50 pF
Unit
Fig.
No.
Min
Typ
Max
Min
Max
tPLH
Propagation Delay
3.3
2.0
6.5
9.0
1.5
10.0
ns
3–5
tPLH
Data to Output
5.0
1.5
5.0
7.0
1.0
7.5
ns
3–5
tPHL
Propagation Delay
3.3
2.0
6.5
9.0
2.0
10.0
ns
3–5
tPHL
Data to Output
5.0
1.5
5.0
7.0
1.0
7.5
ns
3–5
tPZH
Output Enable Time
3.3
2.0
6.0
10.5
1.5
11.0
ns
3–7
tPZH
Output Enable Time
5.0
1.5
5.0
7.0
1.5
8.0
ns
3–7
tPZL
Output Enable Time
3.3
2.5
7.5
10.0
2.0
11.0
ns
3–8
tPZL
Output Enable Time
5.0
1.5
5.5
8.0
1.5
8.5
ns
3–8
tPHZ
Output Disable Time
3.3
3.0
7.0
10.0
1.5
10.5
ns
3–7
tPHZ
Output Disable Time
5.0
2.5
6.5
9.0
1.0
9.5
ns
3–7
tPLZ
Output Disable Time
3.3
2.5
7.5
10.5
2.5
11.5
ns
3–8
tPLZ
Output Disable Time
5.0
2.0
6.5
9.0
2.0
9.5
ns
3–8
*Voltage Range 3.3 V is 3.3 V
±0.3 V.
*Voltage Range 5.0 V is 5.0 V
±0.5 V.
DC CHARACTERISTICS
74ACT
74ACT
Symbol
Parameter
VCC
(V)
TA = +25°C
TA =
–40
°C to
+85
°C
Unit
Conditions
Typ
Guaranteed Limits
VIH
Minimum High Level
4.5
1.5
2.0
2.0
V
VOUT = 0.1 V
g
Input Voltage
5.5
1.5
2.0
2.0
V
or VCC – 0.1 V
VIL
Maximum Low Level
4.5
1.5
0.8
0.8
V
VOUT = 0.1 V
Input Voltage
5.5
1.5
0.8
0.8
V
or VCC – 0.1 V
VOH
Minimum High Level
4.5
4.49
4.4
4.4
V
IOUT = –50 µA
g
Output Voltage
5.5
5.49
5.4
5.4
V
*VIN = VIL or VIH
4.5
3.86
3.76
V
IOH
–24 mA
5.5
4.86
4.76
IOH
–24 mA
VOL
Maximum Low Level
4.5
0.001
0.1
0.1
V
IOUT = 50 µA
Output Voltage
5.5
0.001
0.1
0.1
V
*VIN = VIL or VIH
4.5
0.36
0.44
V
IOL
24 mA
5.5
0.36
0.44
IOL
24 mA
IIN
Maximum Input
55
±01
±10
µA
VI =VCC GND
Leakage Current
5.5
±0.1
±1.0
µA
VI = VCC, GND
∆ICCT
Additional Max. ICC/Input
5.5
0.6
1.5
mA
VI = VCC – 2.1 V
IOZ
Maximum
VI (OE) = VIL, VIH
3–State
C
5.5
±0.5
±5.0
µA
VI = VCC, GND
Current
VO = VCC, GND
IOLD
†Minimum Dynamic
Ot
t C
t
5.5
75
mA
VOLD = 1.65 V Max
IOHD
Output Current
5.5
–75
mA
VOHD = 3.85 V Min
ICC
Maximum Quiescent
55
80
80
µA
VIN =VCC or GND
Q
Supply Current
5.5
8.0
80
µA
VIN = VCC or GND
*All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.




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