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PDF ISL54222A Data sheet ( Hoja de datos )
| Número de pieza | ISL54222A | |
| Descripción | High-Speed USB 2.0 (480Mbps) Multiplexer | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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®
Data Sheet
May 13, 2009
ISL54222A
FN6902.0
High-Speed USB 2.0 (480Mbps)
Multiplexer
The Intersil ISL54222A is a single supply dual 2:1 multiplexer
that can operate from a single 1.8V to 3.3V supply. It contains
two SPDT (Single Pole/Double Throw) switches configured as
a DPDT. The part was designed for switching or routing of
USB High-Speed signals and/or USB Full-speed signals in
portable battery powered products.
The 5.7Ω switches can swing rail-to-rail and were specifically
designed to pass USB full speed data signals that range from
0V to 3.3V and USB high speed data signals that range from
0V to 400mV with a single supply as low as 1.8V. They have
high bandwidth and low capacitance to pass USB high speed
data signals with minimal distortion.
The part can be used in Personal Media Players and other
portable battery powered devices that need to route USB
high-speed signals or full-speed signals to different
transceiver sections of the device while connected to a single
USB host (computer).
The digital logic inputs are 1.8V logic compatible when
operated with a 1.8V to 3.3V supply. The ISL54222A has an
output enable pin to open all the switches and puts the part in
a low power state. It can be used to facilitate proper bus
disconnect and connection when switching between the USB
sources.
The ISL54222A is available in 10 Ld 1.8mmx1.4mm µTQFN,
10 Ld 2.1mmx1.6mm µTQFN, 10 Ld TDFN and 10Ld MSOP
packages. It operates over a temperature range of -40° to
+85°C.
Application Block Diagram
Features
• High-Speed (480Mbps) and Full-Speed (12Mbps)
Signaling Capability per USB 2.0
• 1.8V Logic Compatible
• Low Power All Off State
• Power OFF Protection
• D-/D+ Pins Overvoltage Tolerant to 5.5V
• -3dB Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . 780MHz
• Low ON Capacitance. . . . . . . . . . . . . . . . . . . . . . . . 6.7pF
• Low ON-Resistance. . . . . . . . . . . . . . . . . . . . . . . . . . 5.7Ω
• Single Supply Operation (VDD) . . . . . . . . . . . . 1.8V to 3.3V
• Available in µTQFN, TDFN, MSOP Packages
• Pb-Free (RoHS Compliant)
• Compliant with USB 2.0 Short Circuit and Overvoltage
Requirements Without Additional External Components
• HBM ESD Performance I/O to GND . . . . . . . . . . . >12kV
Applications
• MP3 and other Personal Media Players
• Cellular/Mobile Phones
• PDA’s
• Digital Cameras and Camcorders
• USB Switching
VBUS
D-
D+
GND
VDD
ISL54222A
SEL
LOGIC CIRCUITRY
OE
HSD1-
D- HSD1+
D+
GND
HSD2-
HSD2+
µCONTROLLER
USB
HIGH-SPEED
OR
FULL-SPEED
TRANSCEIVER
#1
USB
HIGH_SPEED
OR
FULL-SPEED
TRANSCEIVER
#2
PORTABLE MEDIA DEVICE
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL54222A
wwwE.DleactatSrihceaetl4SUp.ceomcifications - 1.8V to 3.3V Supply Test Conditions: VDD = +3.3V, GND = 0V, VSELH = 1.4V, VSELL = 0.5V,
VOEH = 1.4V, VOEL = 0.5V, (Note 8), Unless Otherwise Specified. (Continued)
PARAMETER
TEST CONDITIONS
TEMP
MIN
MAX
(°C) (Notes 9, 10) TYP (Notes 9, 10) UNITS
Turn-ON Enable Time, tENABLE VDD = 3.3V, Vinput = 3V, RL = 15KΩ, CL = 50pF, Time out 25 - 37 - ns
of All-Off state
Turn-OFF Disable Time, tDISABLE VDD = 3.3V, Vinput = 3V, RL = 15kΩ, CL = 50pF, Time into 25 - 96 - ns
All-Off state, Time is highly dependent on the load (RL, CL)
time constant.
Skew, (tSKEWOUT - tSKEWIN)
VDD = 3.3V, SEL = 0V or 3.3V, OE = 0V, RL = 45Ω,
25 - 50 - ps
CL = 10pF, tR = tF = 500ps at 480Mbps, (Duty Cycle = 50%)
(Figure 6)
Rise/Fall Degradation
(Propagation Delay), tPD
VDD = 3.3V, SEL = 0V or 3.3V, OE = 0V, RL = 45Ω,
CL = 10pF, (Figure 6)
25 - 250 - ps
Crosstalk
VDD = 3.3V, RL = 50Ω, f = 240MHz (see Figure 5)
25 - -31 - dB
OFF-Isolation
VDD = 3.3V, OE = 3.3V, RL = 50Ω, f = 240MHz
25 - -28 - dB
-3dB Bandwidth
Signal = 0dBm, 0.2VDC offset, RL = 50Ω
25 - 780 - MHz
OFF Capacitance, CHSxOFF
f = 1MHz, VDD = 3.3V, SEL = 0V, OE = 3.3V, VHSD1x or
25
-
2.6
-
pF
VHSD2x = VDx = 0V (Figure 4)
COM ON Capacitance, CDX(ON) f = 1MHz, VDD = 3.3V, SEL = 0V or 3.3V, OE = 0V, VHSD1x 25 - 6.7 - pF
or VHSD2x = VDx = 0V (Figure 4)
POWER SUPPLY CHARACTERISTICS
Power Supply Range, VDD
Positive Supply Current, IDD
VDD = 3.3V, SEL = 0V or VDD, OE = 0V
Full 1.8
3.3 V
25 - 32 43 µA
Full -
- 50 µA
Positive Supply Current, IDD
(Low Power State)
VDD = 3.3V, SEL = 0V or VDD, OE = VDD
25 - 0.77 1 µA
Full -
- 1.5 µA
Positive Supply Current, IDD
VDD = 1.8V, SEL = 0V, OE = 0V
25 -
Full -
5.8 7.8 µA
- 8.3 µA
Positive Supply Current, IDD
(Low Power State)
VDD = 1.8V, SEL = 0V, OE = VDD
25
-
0.12 0.3
µA
Full -
- 1 µA
DIGITAL INPUT CHARACTERISTICS
Input Voltage Low, VSELL, VOEL VDD = 1.8V to 3.3V
Full -
- 0.5 V
Input Voltage High, VSELH, VOEH VDD = 1.8V to 3.3V
Full 1.4
- VDD V
Input Current, ISELL, IOEL
VDD = 3.3V, SEL = 0V, OE = 0V
Full -
170 -
nA
Input Current, ISELH
VDD = 3.3V, SEL = 3.3V
Full -
-1.4 -
nA
Input Current, IOEH
VDD = 3.3V, OE = 3.3V
Full -
-1.4 -
nA
NOTES:
8. VLOGIC = Input voltage to perform proper function.
9. The algebraic convention, whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet.
10. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
11. Flatness is defined as the difference between maximum and minimum value of ON-resistance over the specified analog signal range
12. rON matching between channels is calculated by subtracting the channel with the highest max rON value from the channel with lowest max rON
value, between HSD2+ and HSD2- or between HSD1+ and HSD1-.
13. Limits established by characterization and are not production tested.
5 FN6902.0
May 13, 2009
5 Page 
ISL54222A
www.TDaytapSihceaetl4UP.ceormformance Curves TA = +25°C, Unless Otherwise Specified (Continued)
VDD = 1.8V
TIME SCALE (0.2ns/DIV)
FIGURE 13. EYE PATTERN: 480Mbps WITH USB SWITCHES IN THE SIGNAL PATH
11 FN6902.0
May 13, 2009
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet ISL54222A.PDF ] | |
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