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參數(shù)資料
| 型號： | ACT244 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Octal Buffer/Line Driver with 3-State Outputs |
| 中文描述： | 八路緩沖器/線路驅(qū)動器的3態(tài)輸出 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 96K |
| 代理商： | ACT244 |
MC74AC244, MC74ACT244
http://onsemi.com
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
Data to Output
3.3
5.0
2.0
1.5
6.5
5.0
9.0
7.0
1.5
1.0
10.0
7.5
ns
3–5
tPHL
Propagation Delay
Data to Output
3.3
5.0
2.0
1.5
6.5
5.0
9.0
7.0
2.0
1.0
10.0
7.5
ns
3–5
tPZH
Output Enable Time
3.3
5.0
2.0
1.5
6.0
5.0
10.5
7.0
1.5
1.5
11.0
8.0
ns
3–7
tPZL
Output Enable Time
3.3
5.0
2.5
1.5
7.5
5.5
10.0
8.0
2.0
1.5
11.0
8.5
ns
3–8
tPHZ
Output Disable Time
3.3
5.0
3.0
2.5
7.0
6.5
10.0
9.0
1.5
1.0
10.5
9.5
ns
3–7
tPLZ
Output Disable Time
3.3
5.0
2.5
2.0
7.5
6.5
10.5
9.0
2.5
2.0
11.5
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
Input Voltage
4.5
5.5
1.5
1.5
2.0
2.0
2.0
2.0
V
VOUT = 0.1 V
or VCC – 0.1 V
VOUT = 0.1 V
or VCC – 0.1 V
IOUT = –50
μ
A
VIL
Maximum Low Level
Input Voltage
4.5
5.5
1.5
1.5
0.8
0.8
0.8
0.8
V
VOH
Minimum High Level
Output Voltage
4.5
5.5
4.49
5.49
4.4
5.4
4.4
5.4
V
*VIN = VIL or VIH
4.5
5.5
–
–
3.86
4.86
3.76
4.76
V
IOH
–24 mA
–24 mA
VOL
Maximum Low Level
Output Voltage
4.5
5.5
0.001
0.001
0.1
0.1
0.1
0.1
V
IOUT = 50
μ
A
*VIN = VIL or VIH
4.5
5.5
–
–
0.36
0.36
0.44
0.44
V
IOL
24 mA
24 mA
IIN
Maximum Input
Leakage Current
5 5
5.5
–
0 1
±
0.1
1 0
±
1.0
μ
A
VI= VCCGND
VI = VCC, GND
ICCT
Additional Max. ICC/Input
5.5
0.6
–
1.5
mA
VI = VCC – 2.1 V
IOZ
Maximum
3–State
Current
VI (OE) = VIL, VIH
VI = VCC, GND
VO = VCC, GND
VOLD = 1.65 V Max
5.5
–
±
0.5
±
5.0
μ
A
IOLD
Minimum Dynamic
O t
Output Current
5.5
–
–
75
mA
IOHD
5.5
–
–
–75
mA
VOHD = 3.85 V Min
ICC
Maximum Quiescent
Supply Current
5 5
5.5
–
8 0
8.0
80
μ
A
VIN= VCCor GND
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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