|
|
PDF ISL54228 Data sheet ( Hoja de datos )
| Número de pieza | ISL54228 | |
| Descripción | High-Speed USB 2.0 (480Mbps) DPST Switch | |
| Fabricantes | Intersil | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ISL54228 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
|
No Preview Available !
High-Speed USB 2.0 (480Mbps) DPST Switch withNOc1NTo-8nOR8taE8Rc-CEItNOCoTMOuErMMRTMESeNIcELhDNonEDriDcEwaDFlwOSRwRuE.ipPnNpLtEeoArWrsCt iCElD.ceMEonSEmtIeNG/rTtNsacSt
Overvoltage Protection (OVP)
ISL54228
The Intersil ISL54228 is a single supply, dual SPST
(Single Pole/Single Throw) switch that is configured as a
DPST. It can operate from a single 2.7V to 5.25V supply.
The part was designed for switching or isolating a USB
high-speed source or a USB high-speed and full-speed
source in portable battery powered products.
The 3.5SPST switches were specifically designed to
pass USB full speed and USB high speed data signals.
They have high bandwidth and low capacitance to pass
USB high speed data signals with minimal distortion.
The device has two logic control pins (OE and LP) to
control the SPST switches.
The ISL54228 has OVP detection circuitry on the COM
pins to open the SPST switches when the voltage at
these pins exceeds 3.8V or goes negative by -0.45V. It
isolates fault voltages up to +5.25V or down to -5V from
getting passed to the other-side of the switch, thereby
protecting the USB down-stream transceiver.
The ISL54228 is available in 8 Ld 1.2mmx1.4mm
µTQFN and 8 Ld 2mmx2mm TDFN packages. It operates
over a temperature range of -40°C to +85°C.
Features
• High-Speed (480Mbps) and Full-Speed (12Mbps)
Signaling Capability per USB 2.0
• 1.8V Logic Compatible (2.7V to +3.6V Supply)
• Low Power State
• Power OFF Protection
• COM Pins Overvoltage Detection and Protection for
+5.25V and -5V Fault Voltages
• -3dB Frequency . . . . . . . . . . . . . . . . . . 790MHz
• Low ON Capacitance @ 240MHz . . . . . . . . . . 2pF
• Low ON-Resistance . . . . . . . . . . . . . . . . . . 3.5
• Single Supply Operation (VDD) . . . . 2.7V to 5.25V
• Available in µTQFN and TDFN Packages
• Pb-Free (RoHS Compliant)
• Compliant with USB 2.0 Short Circuit and
Overvoltage Requirements Without Additional
External Components
Applications*(see page 15)
• MP3 and other Personal Media Players
• Cellular/Mobile Phones, PDA’s
• Digital Cameras and Camcorders
• USB Switching
Typical Application
3.3V
500Ω
VDD
USB 2.0 HS Eye Pattern with
Switches in the Signal Path
VBUS
D- COM -
OVP
DET
D+ COM +
GND ISL54228
LOGIC
CONTROL
LP
OE
D-
GND
D+
µP
USB
HIGH-SPEED
TRANSCEIVER
TIME SCALE (0.2ns/DIV)
July 29, 2010
FN7628.0
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. 2010. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL54228
Electrical Specifications - 2.7V to 5.25V Supply Test Conditions: VDD = +3.3V, GND = 0V, VLP = GND,
VOEH = 1.4V, VOEL = 0.5V, (Note 9), Unless Otherwise Specified. Boldface limits apply over the operating temperature
range, -40°C to +85°C. (Continued)
PARAMETER
TEST CONDITIONS
TEMP
MIN
MAX
(°C) (Notes 10, 11) TYP (Notes 10, 11) UNITS
OVERVOLTAGE PROTECTION DETECTION
Positive Fault-Protection Trip VDD = 2.7V to 5.25V, OE = VDD
Threshold, VPFP
(see Table 1 on page 3)
Negative Fault-Protection Trip VDD = 2.7V to 5.25V, OE = VDD
Threshold, VNFP
(see Table 1 on page 3)
OFF Persistence Time
Negative OVP Response: VDD = 2.7V,
Fault Protection Response Time SEL = 0V or VDD, OE = VDD, VDx = 0V to
-5V, RL = 15k
Positive OVP Response: VDD = 2.7V,
SEL = 0V or VDD, OE = VDD, VDx = 0V to
5.25V, RL = 15k
ON Persistence Time
VDD = 2.7V, OE = VDD, VDx = 0V to 5.25V
Fault Protection Recovery Time or 0V to -5V, RL = 15k
DYNAMIC CHARACTERISTICS
25
25
25
25
25
3.62
-0.6
-
3.8
-0.45
102
3.95
-0.29
-
-2-
- 45 -
V
V
ns
µs
µs
Turn-ON Time, tON
Turn-OFF Time, tOFF
Skew, (tSKEWOUT - tSKEWIN)
VDD = 3.3V, Vinput = 3V, RL = 50,
CL = 50pF (see Figure 1)
VDD = 3.3V, Vinput = 3V, RL = 50,
CL = 50pF (see Figure 1)
VDD = 3.3V, OE = 3.3V, RL = 45,
CL = 10pF,tR = tF = 500ps at 480Mbps,
(Duty Cycle = 50%) (see Figure 5)
25
25
25
- 160 -
- 60 -
- 50 -
ns
ns
ps
Rise/Fall Degradation
(Propagation Delay), tPD
Crosstalk
VDD = 3.3V, OE = 3.3V, RL = 45,
CL = 10pF,see Figure 5)
VDD = 3.3V, RL = 50, f = 240MHz
(see Figure 4)
25
25
- 250 -
- -39 -
ps
dB
OFF-Isolation
-3dB Bandwidth
OFF Capacitance, COFF
VDD = 3.3V, OE = 0V, RL = 50, f = 240MHz
Signal = 0dBm, 0.2VDC offset, RL = 50
f = 1MHz, VDD = 3.3V, LP = 0V, OE = 0V
(Figure 3)
25
25
25
- -23 -
- 790 -
- 2.5 -
dB
MHz
pF
COM ON Capacitance, C(ON) f = 1MHz, VDD = 3.3V, LP = 0V, OE = 3.3V 25
-
4
-
pF
(Figure 3)
COM ON Capacitance, C(ON) f = 240MHz, VDD = 3.3V, LP = 0V, OE = 3.3V 25
-
2
-
pF
POWER SUPPLY CHARACTERISTICS
Power Supply Range, VDD
Full 2.7
5.25
V
Positive Supply Current, IDD VDD = 5.25V, OE = 5.25V, LP = GND
25
-
45 56
µA
Full -
- 59 µA
Positive Supply Current, IDD VDD = 3.6V, OE = 3.6V, LP = GND
25
-
23 30
µA
Full -
- 34 µA
Positive Supply Current, IDD VDD = 3.6V, OE = 0V, LP = VDD
(Low Power State)
25 -
Full -
5 6 µA
- 10 µA
Positive Supply Current, IDD VDD = 4.3V, OE = 2.6V, LP = GND
25
-
35 45
µA
Full -
- 50 µA
5 FN7628.0
July 29, 2010
5 Page 
ISL54228
In a typical application, VDD will be in the range of
2.8V to 4.3V and will be connected to the battery or
LDO of the portable media device.
LOGIC CONTROL
The state of the ISL54228 device is determined by the
voltage at the OE pin, LP pin, and the signal voltage at
the COM pins. Refer to “Truth Table” on page 2.
The OE and LP pins are internally pulled low through a
4Mresistor to ground and can be tri-stated or left
floating.
The ISL54228 is designed to minimize IDD current
consumption when the logic control voltage is lower than
the VDD supply voltage. With VDD = 3.6V and the OE
logic pin is at 1.4V, the part typically draws only 25µA.
With VDD = 4.3V and the OE logic pin is at 2.6V, the part
typically draws only 35µA. Driving the logic pin to the
VDD supply rail minimizes power consumption.
The OE and LP pin can be driven with a voltage higher
than the VDD supply voltage. It can be driven up to
5.25V with a VDD supply in the range of 2.7V to 5.25V.
TABLE 2. LOGIC CONTROL VOLTAGE LEVELS
LOGIC = “0” (LOW)
VDD SUPPLY
RANGE OE LP
LOGIC = “1”
(HIGH)
OE LP
2.7V to 3.6V
0.5V
or
floating
0.5V
or
floating
1.4V
1.4V
3.7V to 4.2V
0.7V
or
floating
0.7V
or
floating
1.7V
1.7V
4.3V to 5.25V
0.8V
or
floating
0.8V
or
floating
2.0V
2.0V
Low Power Mode
If the OE pin = Logic “0”, and the LP pin = Logic “1” the
switches will turn OFF (high impedance) and the part
will be put in a low power mode. In this mode, the part
draws only 10µA (max) of current across the operating
temperature range.
Normal Operation Mode
With a signal level in the range of 0V to 3.6V and with
the LP pin = Logic “0” the switches will be ON when the
OE pin = Logic “1” and will be OFF (high impedance)
when the OE pin = Logic “0”.
USB 2.0 VBUS Short Requirements
The USB specification in section 7.1.1 states a USB
device must be able to withstand a VBUS short (4.4V to
5.25V) or a -1V short to the D+ or D- signal lines when
the device is either powered off or powered on for at
least 24 hours.
The ISL54228 part has special power-off protection and
OVP detection circuitry to meet these short circuit
requirements. This circuitry allows the ISL54228 to
provide protection to the USB down-stream transceiver
connected at its signal pins (D-, D+) to meet the USB
specification short circuit requirements.
The power-off protection and OVP circuitry allows the
COM pins (COM-, COM+) to be driven up to 5.25V or
down to -5V while the VDD supply voltage is in the range
of 0V to 5.25V. In these overvoltage conditions, the part
draws < 55µA of current into the COM pins and causes
no stress/damage to the IC. In addition, all switches are
OFF and the shorted VBUS voltage will be isolated from
getting through to the other side of the switch channels,
thereby protecting the USB transceiver.
11 FN7628.0
July 29, 2010
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet ISL54228.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ISL54220 | High-Speed USB 2.0 (480Mbps) Multiplexer |  Intersil Corporation |
| ISL54221 | High-Speed USB 2.0 (480Mbps) Multiplexer | Intersil Corporation |
| ISL54222 | High-Speed USB 2.0 (480Mbps) Multiplexer | Intersil Corporation |
| ISL54222A | High-Speed USB 2.0 (480Mbps) Multiplexer | Intersil Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |