pdiusbh11 NXP Semiconductors, pdiusbh11 Datasheet - Page 20

• Manufacturer Part Number: pdiusbh11
• Description: Universal Serial Bus Hub
• Manufacturer: NXP Semiconductors

Philips Semiconductors
AC CHARACTERISTICS (AI/O PINS. LOW SPEED)
1997 Aug 01
Driver Characteristics:
Hub Timings:
Driver Timings:
Receiver Timings:
SYMBOL
SYMBOL
T
T
T
Universal Serial Bus Hub
T
T
T
V
T
T
LEOPDR
LEOPR1
LEOPR2
LDEOP
LHESK
DIFFERENTIAL
LEOPT
T
LHDD
T
LCRS
LSOP
DATA LINES
LR
LF
Transition time:
Rise time
Fall tIme
Output signal crossover voltage
Source EOP width
Differential data to EOP transition skew
EOP width at receiver
Must reject as EOP
Must accept
Hub differential data delay
Data bit width distortion after SOP
Hub EOP delay relative to T
Hub EOP output width skew
T
PERIOD
PARAMETER
PARAMETER
CROSSOVER
Figure 1. Differential Data to EOP Transition Skew and EOP Width
POINT
DIFFERENTIAL DATA TO
SEO/EOP SKEW
N* T
PERIOD
HDD
+ T
DEOP
C
R
Between 10% and 90%
C
C
C
C
Figure 1
Figure 1
Figure 1
C
R
Figure 2
Figure 2
Figure 3
Figure 3
L
pu
L
L
L
L
L
pu
= 50pF and 350pF;
= 50pF
= 350pF
= 50pF
= 350pF
= 50pF and 350pF;
= 1.5K on D– to V
= 1.5K on D– to V
20
TEST CONDITIONS
TEST CONDITIONS
POINT EXTENDED
CROSSOVER
CC
CC
SOURCE EOP WIDTH:
RECEIVER EOP WIDTH: T
–300
1.25
MIN
–40
330
675
–65
1.3
75
75
0
LIMITS
PDIUSBH11
T
Product specification
EOPT
EOPR1
MAX
+300
1.50
300
300
100
300
200
2.0
45
, T
EOPR2
SV00513
UNIT
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
V