MC141555 View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
Manufacturer
MC141555 Datasheet PDF : 16 Pages
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Freescale Semiconductor, Inc.
FULL SPEED OPERATING HUB ELECTRICAL CHARACTERISTICS
Symbol
Parameter
Conditions
Min
Max
Unit
tHDD1
tHDD2
Hub Differential Data Delay
(with cable)
(without cable)
Figure 5, Figure 6
—
—
70
ns
40
ns
Hub Differential Driver Jitter (including cable)
tHDJ1
tHDJ2
To Next Transition
For Paired Transitions
—
-3
3
ns
-1
1
ns
tSOP
Data Bit Width Distortion After SOP
—
-5
3
ns
tHESK
Hub EOP Output Width Skew
—
-15
15
ns
LOW SPEED OPERATING HUB ELECTRICAL CHARACTERISTICS
Symbol
Parameter
Conditions
Min
Max
Unit
tLHDD
Hub Differential Data Delay
Figure 5, Figure 6
—
300
ns
Hub Differential Driver Jitter (including cable)
tLDHJ1
tLDHJ2
tLDHJ2
tLDHJ2
Downstream:
To Next Transition
For Paired Transitions
Upstream:
To Next Transition
For Paired Transitions
-45
45
ns
—
-15
15
ns
-45
45
ns
-45
45
ns
tSOP
Data Bit Width Distortion After SOP
—
-60
45
ns
tLHESK
Hub EOP Output Width Skew
—
-300
300
ns
Upstream
End of
Cable
Vss
Downstream
Port
Vss
50% Point of
Initial Swing
Downstream
Port
Vss
Hub Delay
Downstream
tHDD1
Crossover
Point
Figure 5. Downstream Hub Delay
Upstream
End of
Cable
Vss
Crossover
Point
Hub Delay
Downstream
tHDD1, tHDD2
Crossover
Point
Figure 6. Upstream Hub Delay
MOTOROLA
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Go to: www.freescale.com
MC141555
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