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參數(shù)資料
| 型號(hào)： | ISL54214IRUZ-T |
| 廠商： | Intersil |
| 文件頁數(shù)： | 3/22頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC USB SWITCH DUAL SP3T 12UTQFN |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 功能： | USB 開關(guān) |
| 電路： | 2 x SP3T |
| 導(dǎo)通狀態(tài)電阻： | 8 歐姆 |
| 電壓電源： | 單電源 |
| 電壓 - 電源，單路/雙路(±)： | 2.7 V ~ 4.6 V |
| 電流 - 電源： | 9µA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 12-UFQFN |
| 供應(yīng)商設(shè)備封裝： | 12-uTQFN（2.2x1.4） |
| 包裝： | 帶卷 (TR) |
ISL54214
11
FN6816.3
June 28, 2010
These switches can also swing rail-to-rail and pass USB
full-speed signals (12Mbps) with minimal distortion. See
Figure 25 for the full-speed eye pattern taken with the
switch in the signal path.
The maximum normal operating signal range for the USB
switches is from -1V to VDD. The signal voltage at D- and
D+ should not be allow to exceed the VDD voltage rail or
go below ground by more than -1V for normal operation.
However, in the event that the USB 5.25V VBUS voltage
is shorted to one or both of the COM pins, the ISL54214
has fault protection circuitry to prevent damage to the
ISL54214 part. The fault circuitry allows the signal pins
(COM-, COM+, 1D-, 1D+, 2D-, 2D+, L and R) to be
driven up to 5.25V while the VDD supply voltage is in the
range of 0V to 4.6V. This fault condition causes no stress
to the IC. In addition, when VDD is at 0V (ground), all
switches are OFF and the fault voltage is isolated from
the other side of the switch. When VDD is in the range of
2.7V to 4.6V, the fault voltage will pass through to the
output of an active switch channel. Note: During the fault
condition normal operation is not guaranteed until the
fault condition is removed.
The USB (1D+ and 1D-) switches are active (turned ON)
whenever the C1 is logic “0” (Low) and C0 is logic “1”
(High). The USB (2D+ and 2D-) switches are active
(turned ON) whenever the C1 is logic “1” (High) and C0
is logic “0” (Low) provided the last state was not the
Audio or Audio Mute state.
ISL54214 Operation
The discussion that follows will discuss using the
ISL54214 in the “Application Block Diagrams” on
LOGIC CONTROL
The state of the ISL54214 device is determined by the
voltage at the C1 pin (pin 9) and the C0 pin (pin 10). The
part has five states or modes of operation. The All
SWITCHES OFF mode, USB1 mode, USB2 mode, Audio
mode and Audio Mute mode. Refer to the “Truth Table”
The C1 pin and C0 pin are internally pulled low through
4MΩ resistors to ground and can be tri-stated or left
floating.
The C1 pin and C0 pin can be driven with a voltage that
is higher than the VDD supply voltage. They can be
driven up to 5.25V with the VDD supply in the range of
2.7V to 4.6V. Driving the logic higher than the supply rail
will cause the logic current to increase. With VDD = 2.7V
and VLOGIC = 5.25V, ILOGIC current is approximately
5.5A.
Logic Control Voltage Levels
With VDD in the range of 2.7V to 3.6V the logic levels
are: C1, C0 = Logic “0” (Low) when ≤ 0.5V or Floating.
C1, C0 = Logic “1” (High) when ≥ 1.4V
ALL SWITCHES OFF Mode
If the C1 pin = Logic “0” and C0 pin = Logic “0” the part
will be in the ALL SWITCHES OFF mode. In this mode,
the 2D- and 2D+ USB switches, the L and R audio
switches and the 1D- and 1D+ USB switches will be OFF
(high impedance).
The 1kΩ shunts on the COM side will be disconnected
(OFF).
It is recommended that when transitioning from USB1
to USB2 or from USB2 to USB1 that you always pass
through the All Switches OFF state.
Audio Mode
If the C1 pin = Logic “1” and C0 pin = Logic “1”, the part
will be in the Audio mode. In Audio mode, the L (left) and
R (right) 2.3Ω audio switches are ON, the 1D- and 1D+
6.2Ω USB switches and 2D- and 2D+ 6.2Ω USB switches
will be OFF (high impedance).
The 1kΩ shunts on the COM side of the switch will be
disconnected (OFF).
When a headphone is plugged into the common
connector, the controller will drive the C1 and C0 logic
pins “High” putting the part in the audio mode. In the
Audio mode, the audio drivers of the player can drive the
headphones and play music.
USB1 Mode
If the C1 pin = Logic “0” and C0 pin = Logic “1” the part
will go into USB1 mode. In USB1 mode, the 1D- and 1D+
6.2Ω switches are ON and the L and R 2.3Ω audio
switches and 2D- and 2D+ 6.2Ω USB switches will be
OFF (high impedance).
The 1kΩ COM shunt resistors will be disconnected (OFF).
When a USB cable from a computer or USB hub is
connected at the common connector, the
μcontroller will
route the incoming USB signal to USB transceiver section
#1 by taking the C1 pin “Low” and the C0 pin “High”
putting the ISL54214 part into the USB1 mode. In USB1
mode the computer or USB hub transceiver and the MP3
player or cellphone USB transceiver #1 are connected
and digital data will be able to be transmit back and
forth.
USB2 Mode
If the C1 = Logic “1” and C0 pin = Logic “0” the part will
be in the USB2 mode provided that the last state was not
the Audio or Audio Mute state. In the USB2 mode, the
2D- and 2D+ 6.2Ω USB switches will be ON and audio
switches and the 1D- and 1D+ USB switches will be OFF
(high impedance).
The 1kΩ COM shunt resistors will be disconnected (OFF).
When a USB cable from a computer or USB hub is
connected at the common connector, the
μcontroller will
route the incoming USB signal to USB transceiver section
#2 by taking the C1 pin “High” and the C0 pin “Low”
putting the ISL54214 part into the USB2 mode. In USB2
ISL54214
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL54215 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:MP3/USB 2.0 High Speed Switch with Negative Signal Handling and Low Power Shutdown |
| ISL54215IRUZ-T | 功能描述:IC USB SWITCH DUAL SPDT 10UTQFN RoHS:是 類別:集成電路 (IC) >> 接口 - 模擬開關(guān)，多路復(fù)用器，多路分解器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:36 系列:- 功能:多路復(fù)用器 電路:2 x 4:1 導(dǎo)通狀態(tài)電阻:75 歐姆 電壓電源:單/雙電源 電壓 - 電源，單路/雙路(±):2 V ~ 12 V，±2 V ~ 6 V 電流 - 電源:- 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:20-SOIC W 包裝:管件 |
| ISL54216 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:USB 2.0 High-Speed/UART Dual SP3T (Dual 3 to 1 Multiplexer) |
| ISL54216EVAL1Z | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:USB 2.0 High-Speed/UART Dual SP3T (Dual 3 to 1 Multiplexer) |
| ISL54216IRTZ | 功能描述:IC USB SWITCH SP3T DUAL 12TQFN RoHS:是 類別:集成電路 (IC) >> 接口 - 模擬開關(guān)，多路復(fù)用器，多路分解器 系列:- 其它有關(guān)文件:STG4159 View All Specifications 標(biāo)準(zhǔn)包裝:5,000 系列:- 功能:開關(guān) 電路:1 x SPDT 導(dǎo)通狀態(tài)電阻:300 毫歐 電壓電源:雙電源 電壓 - 電源，單路/雙路(±):±1.65 V ~ 4.8 V 電流 - 電源:50nA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:7-WFBGA，F(xiàn)CBGA 供應(yīng)商設(shè)備封裝:7-覆晶 包裝:帶卷 (TR) |
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