PDIUSBH12D View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
PDIUSBH12D Datasheet PDF : 28 Pages
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Philips Semiconductors
USB 2-port hub
Product specification
PDIUSBH12
AC CHARACTERISTICS (AI/O pins, LOW speed)
SYMBOL
PARAMETER
Driver characteristics
Transition Time
tlr
Rise time
tlf
Fall time
tRFM
Rise/fall time matching
VLCRS
Output signal crossover voltage
Driver Timings
tLEOPT
Source EOP width
tLDEOP
Differential data to EOP transition skew
Receiver Timings
EOP Width at Receiver
tLEOPR1
tLEOPR2
Hub Timings
Must reject as EOP
Must accept
tLHDD
tLSOP
tLEOPDR
tLHESK
Hub Differential Data Delay
Data bit width distortion after SOP
Hub EOP Delay Relative to THDD
Hub EOP Output Width Skew
TEST CONDITIONS
CL = 50pF and 350pF;
Rpu = 1.5kΩ on D– to VCC
Between 10% and 90%
CL = 50pF
CL = 350pF
CL = 50pF
CL = 350pF
(tr/tf)
Figure 1
Figure 1
Figure 1
Low Speed downstream port.
Figure 2
Figure 2
Figure 3
Figure 3
MIN
MAX UNIT
75
ns
300
ns
75
ns
300
ns
80
120
%
1.3
2.0
V
1.25
1.50
µs
–40
100
ns
330
ns
675
ns
300
ns
–65
45
ns
0
200
ns
–300 +300
ns
tPERIOD
DIFFERENTIAL
DATA LINES
CROSSOVER POINT
CROSSOVER POINT
EXTENDED
DIFFERENTIAL DATA TO
SEO/EOP SKEW
N * tPERIOD + tDEOP
SOURCE EOP WIDTH: tEOPT
RECEIVER EOP WIDTH: tEOPR1, tEOPR2
Figure 1. Differential data to EOP transition skew and EOP width
SV00837
1999 Jul 22
21
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