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PI3USB42

更新时间： 2024-11-23 01:22:55
品牌 Logo 应用领域
百利通 - PERICOM /
页数 文件大小 规格书
7页 496K
描述
USB2.0 High-Speed (480Mbps) Signal Switch With Vbus Short Protection

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中文翻译

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PI3USB42 数据手册

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PI3USB42  
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USB2.0 High-Speed (480Mbps) Signal Switch With Vbus Short Protection  
Features  
Description  
•
•
•
•
•
•
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USB 2.0 compliant (high speed and full speed)  
The PI3USB42 is a single differential channel 2:1  
multiplexer/demultiplexer USB 2.0 Switch. Industry  
leading advantages include a propagation delay of less  
than 250ps, resulting from its low channel resistance and  
I/O capacitance. The device multiplexes differential  
outputs from a USB Host device to one of two  
corresponding outputs. The switch is bidirectional and  
offers little or no attenuation of the high-speed signals at  
the outputs. It is designed for low bit-to-bit skew, high  
channel-to-channel noise isolation and is compatible  
with various standards, such as High Speed USB 2.0  
(480 Mb/s).  
RON is 4.0Ω typical @ VDD = 3.0V  
Low bit-to-bit skew  
Low Crosstalk: -41dB @ 240 MHz  
Off Isolation: -37dB @ 240 MHz  
Wide -3db bandwidth: 770MHz  
Near-Zero propagation delay: 250ps  
Support for 1.8V/2.5V/3.3V Logic on Control pins  
Channel On Capacitance: 6.0pF  
VDD Operating Range: 1.8V to 4.3V ±10%  
Data pin I/O ESD: >8kV HBM protection per  
JESD22-A114D specification  
•
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I/O pins have over-voltage protection and can  
tolerate a short to Vbus  
The PI3USB42 offers overvoltage protection per the  
USB2.0 specification. With the chip powered on or off,  
all I/O pins can withstand a short to Vbus (5V +/-10%).  
If VDD=0V, the I/Os can still have signals present, and  
the signal will NOT leak through to VDD.  
Packaging (Pb-free & Green): 10-pin UQFN (ZM10)  
Applications  
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Route signals for USB 2.0  
Functional Block Diagram  
Cell phone, PDA, Digital camera and Notebook  
LCD Monitor ,TV, Set-top box  
Portable device  
D+A  
D+  
D+B  
Pin Description  
D-A  
Pin No  
Pin  
Name  
D+  
Description  
USB Data bus  
USB Data bus  
Ground  
Multiplexed Source Inputs  
Multiplexed Source Inputs  
Multiplexed Source Inputs  
Multiplexed Source Inputs  
Switch Enable  
D-  
D-B  
1
2
D-  
/OE  
3
4
5
6
7
8
GND  
D-A  
D+A  
D-B  
D+B  
/OE  
SEL  
LOGIC  
Pin Assignment  
9
10  
VDD  
SEL  
Positive Power Supply  
Switch Select  
Logic Function Table  
/OE  
H
SEL  
X
Function  
I/O’s = Hi-Z  
L
L
L
H
D(+/-) to D(+/-)A  
D(+/-) to D(+/-)B  
2011-11-0004  
PT0378-1  
8/26/11  
1
1234567

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