isp1122 NXP Semiconductors, isp1122 Datasheet - Page 34

• Manufacturer Part Number: isp1122
• Description: Isp1122 Universal Serial Bus Stand-alone Hub
• Manufacturer: NXP Semiconductors

Table 33: Dynamic characteristics: analog I/O pins (D , D ); low-speed mode
V
[1]
[2]
[3]
Philips Semiconductors
9397 750 07002
Product specification
Symbol
Driver characteristics
t
t
LRFM
V
Hub timing (downstream ports configured as low-speed)
t
t
t
t
LR
LF
LHDD
LSOP
LEOPD
LHESK
CC
Fig 14. Overcurrent trip response timing.
CRS
= 4.0 to 5.5 V; V
Test circuit: see
Excluding the first transition from Idle state.
Characterized only, not tested. Limits guaranteed by design.
Overcurrent input: OCn; power switch output: PSWn.
Reference voltage for overcurrent sensing: V
Parameter
rise time
fall time
differential rise/fall time
matching (t
output signal crossover voltage
hub differential data delay
data bit width distortion after
SOP
hub EOP delay relative to t
hub EOP output width skew
Figure
GND
= 0 V; T
22.
LR
/t
LF
)
amb
handbook, halfpage
power switch
overcurrent
= 40 to 85 C; C
output
input
V CC
V CC
HDD
0 V
0 V
CC
Conditions
C
10 to 90% of V
C
10 to 90% of V
see
see
see
see
(bus-powered mode) or V
L
L
Rev. 03 — 29 March 2000
= 200 to 600 pF;
= 200 to 600 pF;
Figure 19
Figure 19
Figure 20
Figure 20
L
V trip
= 50 pF; R
t trip
OH
OH
PU
V
V
OL
OL
= 1.5 k on D to V
SP/BP
[2] [3]
[2]
[3]
[3]
[3]
(self-powered mode).
Min
75
75
80
1.3
-
0
60
300
[1]
MBL032
TERM
Typ
-
-
-
-
-
-
-
-
; unless otherwise specified.
USB stand-alone hub
© Philips Electronics N.V. 2000. All rights reserved.
Max
300
300
125
2.0
300
200
60
300
ISP1122
Unit
ns
ns
%
V
ns
ns
ns
ns
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