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參數(shù)資料
| 型號： | MC141555 |
| 廠商： | Motorola, Inc. |
| 英文描述： | USB Hub Controller CMOS |
| 中文描述： | USB集線器控制器的CMOS |
| 文件頁數(shù)： | 3/16頁 |
| 文件大小： | 280K |
| 代理商： | MC141555 |
MC141555
3
MOTOROLA
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to VSS
NOTE: Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the limits in the Electrical Characteristics
tables or Pin Description section.
AC ELECTRICAL CHARACTERISTICS
(VDD/VDD(A) = 5.0 V, VSS/VSS(A) = 0 V, TA = 25C,
Voltage Referenced to VSS)
FULL SPEED MODE CHARACTERISTICS
LOW SPEED MODE CHARACTERISTICS
Symbol
Characteristic
Value
Unit
VDD
Supply Voltage
- 0.3 to + 7.0
V
Vin
Input Voltage
VSS – 0.3 to
VDD + 0.3
V
Id
Current Drain per Pin Excluding VDD and VSS
25
mA
Ta
Operating Temperature Range
0 to 85
°
C
Tstg
Storage Temperature Range
– 65 to + 150
°
C
Symbol
Parameter
Conditions
Min
Max
Unit
tr
tf
Rise Time for DP/DM
Fall Time for DP/DM
Cload = 50 pF
Cload = 50 pF
4
4
20
20
ns
ns
tRFM
Rise/Fall Time Matching
(tr/tf) x 100
90
110
%
VCRS
Output Signal Crossover Voltage
—
1.3
2.0
V
Symbol
Parameter
Conditions
Min
Max
Unit
tr
tf
Rise Time for DP/DM
Fall Time for DP/DM
Cload = 50 pF to 350 pF
Cload = 50 pF to 350 pF
75
75
300
300
ns
ns
tRFM
Rise/Fall Time Matching
(tr/tf) x 100
80
120
%
VCRS
Output Signal Crossover Voltage
—
1.3
2.0
V
This device contains protection circuitry to guard
against damage due to high static voltages or
electric fields. However, precautions must be
taken to avoid applications of any voltage higher
than maximum rated voltages to this high-imped-
ance circuit. For proper operation, Vin and Vout
should be constrained to the range VSS
≤
(Vin
or Vout)
≤
VDD.
Unused inputs must always be tied to an appro-
priate logic voltage level (e.g., either VSS or
VDD). Unused outputs must be left open.
90%
10%
tr
DP
DM
V
OL
V
OH
VCRS
90%
10%
tf
DM
Cload
Cload
R1
R1
R2
R2
R3
Data
R1 = 22
R2 = 15
R3 = 1.5
Figure 2. Differential Driver Switching Load
Figure 3. Differential Driver Switching Characteristics
k
k
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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