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参数资料
| 型号： | SN74ACTQ573QSC |
| 厂商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分类： | 总线收发器 |
| 英文描述： | ACT SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| 封装： | 0.150 INCH, PLASTIC, SSOP-20 |
| 文件页数： | 7/10页 |
| 文件大小： | 212K |
| 代理商： | SN74ACTQ573QSC |
AC Electrical Characteristics for ACTQ
Symbol
Parameter
VCC
(V)
(Note 16)
TA = +25C
CL = 50 pF
TA = 40C to +85C
CL = 50 pF
Units
Min
Typ
Max
Min
Max
tPHL
Propagation Delay
5.0
2.0
6.5
7.5
2.0
8.0
ns
tPLH
Dnto On
tPLH
Propagation Delay
5.0
2.5
7.0
8.5
2.5
9.0
ns
tPHL
LE to On
tPZL,tPZH
Output Enable Time
5.0
2.0
7.0
9.0
2.0
9.5
ns
tPHZ,tPLZ
Output Disable Time
5.0
1.0
8.0
10.0
1.0
10.5
ns
tOSHL
Output to Output Skew (Note
17)
5.0
0.5
1.0
ns
tOSLH
Dn to On
Note 16: Voltage Range 5.0 is 5.0V ±0.5V
Note 17: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The speci-
fication applies to any outputs switching in the same direction, either HIGH to LOW (tOSHL or LOW to HIGH (tOSLH). Parameter guaranteed by design.
AC Operating Requirements for ACTQ
Symbol
Parameter
VCC
(V)
(Note 18)
TA = +25C
CL = 50 pF
TA = 40C to +85C
CL = 50 pF
Units
Typ
Guaranteed Minimum
tS
Setup Time, HIGH or LOW
5.0
0
3.0
ns
Dn to LE
tH
Hold Time, HIGH or LOW
5.0
0
1.5
ns
Dn to LE
tW
LE Pulse Width, HIGH
5.0
2.0
4.0
ns
Note 18: Voltage Range 5.0 is 5.0V ±0.5V
Capacitance
Symbol
Parameter
Typ
Units
Conditions
CIN
Input Capacitance
4.5
pF
VCC = OPEN
CPD
Power Dissipation
42.0
pF
VCC = 5.0V
Capacitance
FACT Noise Characteristics
The setup of a noise characteristics measurement is critical
to the accuracy and repeatability of the tests. The following is
a brief description of the setup used to measure the noise
characteristics of FACT.
Equipment:
Hewlett Packard Model 8180A Word Generator
PC-163A Test Fixture
Tektronics Model 7854 Oscilloscope
Procedure:
1.
Verify Test Fixture Loading: Standard Load 50 pF, 500
.
2.
Deskew the HFS generator so that no two channels
have greater than 150 ps skew between them. This re-
quires that the oscilloscope be deskewed first. It is im-
portant to deskew the HFS generator channels before
testing. This will ensure that the outputs switch simulta-
neously.
3.
Terminate all inputs and outputs to ensure proper load-
ing of the outputs and that the input levels are the correct
voltage.
4.
Set the HFS generator to toggle all but one output at a
frequency of 1 MHz. Greater frequencies will increase
DUT heating and affect the results of the measurement.
5.
Set the HFS generator input levels at 0V LOW and 3V
HIGH for ACT devices and 0V LOW and 5V HIGH for AC
devices. Verify levels with an oscilloscope.
www.fairchildsemi.com
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