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ISP1122ABD Datenblatt(PDF) 28 Page - NXP Semiconductors

Teilenummer ISP1122ABD
Bauteilbeschribung  Universal Serial Bus stand-alone hub
PDF  48 Pages
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Hersteller  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

ISP1122ABD Datenblatt(HTML) 28 Page - NXP Semiconductors

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Philips Semiconductors
ISP1122A
USB stand-alone hub
Preliminary specification
Rev. 01 — 27 March 2000
28 of 48
9397 750 06986
© Philips Electronics N.V. 2000. All rights reserved.
Power switches 1 to 4 are low-ohmic PMOS devices as specified in Section 12.2.
Fig 12. Mode 4: bus-powered hub; individual port power switching; individual overcurrent detection.
handbook, full pagewidth
MBL172
INDV
OPTION
PSW1/GL1
PSW5/GL5/GPSW
PSW4/GL4
PSW3/GL3
SP/BP
OC5/GOC
PSW2/GL2
OC1
OC2
OC3
OC4
ISP1122A
VBUS
D
+
D
−
GND
SHIELD
+4.50 V(min)
upstream
port
VCC
GND
1
2
3
4
+4.40 V
(min)
VBUS
D
+
D
−
GND
SHIELD
1
downstream
ports
120
µF
ferrite bead
+4.40 V
(min)
VBUS
D
+
D
−
GND
SHIELD
2
120
µF
ferrite bead
+4.40 V
(min)
VBUS
D
+
D
−
GND
SHIELD
3
120
µF
ferrite bead
+4.40 V
(min)
VBUS
D
+
D
−
GND
SHIELD
4
120
µF
ferrite bead
330 k
Ω
(4
×)
low-ohmic
PMOS switch
47 k
Ω
0.1
µF
low-ohmic
PMOS switch
47 k
Ω
0.1
µF
low-ohmic
PMOS switch
47 k
Ω
0.1
µF
low-ohmic
PMOS switch
47 k
Ω
0.1
µF



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