TS3USB3031：USB2.0与MHL/Mobile DP开关解决方案
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"TI-TS3USB3031.pdf 是一款由德州仪器(Texas Instruments)推出的集成电路，主要用于实现双通道1:3的USB2.0高速(480Mbps)和移动高清链路(MHL)或移动显示端口(MyDP)的切换功能。"
TI的TS3USB3031是一款高度集成的开关器件，它设计用于处理USB2.0高速数据传输以及MHL或MyDP接口的信号切换。这款芯片具备两个独立的USB开关组和一个MHL/MyDP开关，能够灵活地连接不同的设备和接口。以下是该器件的主要特性：
1. 电源电压范围广泛：支持2.5V至4.3V的电压输入，这使得它能够在多种电源条件下正常工作。
2. 高性能开关特性：MHL/MyDP开关具有-6.5GHz的带宽，Ron（导通电阻）典型值为5.5Ω，Coff（关闭时电容）典型值为1.3pF。USB开关则具有6.5GHz的带宽，Ron为4.5Ω，Coff为1pF。这些参数确保了高速数据传输时的低损耗和低信号失真。
3. 低功耗设计：在典型工作条件下，TS3USB3031的电流消耗仅为28μA，这对于电池供电的便携式设备来说非常重要。
4. 安全保护机制：内置IOFF功能可在电源断开时防止漏电流，避免对系统造成损害。此外，控制输入(SEL)兼容1.8V，所有I/O引脚上具有高达5.5V的过压容限，无需额外的保护组件。
5. 静电防护：符合行业标准的ESD性能，包括2kV人体放电模型和1kV带电器件模型，确保了在使用和组装过程中的可靠性。
6. 紧凑的封装：采用12引脚的VQFN封装，尺寸仅为1.8mm x 1.8mm，0.5mm的间距，适合空间有限的电子产品设计。
应用场景：
- 智能手机和平板电脑：用于连接不同类型的USB设备，并支持MHL或MyDP功能，如连接到大屏幕显示器或电视进行高清视频输出。
- 移动电话：在不同接口之间切换，如充电、数据同步和多媒体输出。
- 便携式仪表：在测量设备中，TS3USB3031可实现数据传输和设备通信的灵活配置。
- 数码相机：通过USB接口与电脑或其他设备交换数据，同时可能支持MHL功能，直接在大屏幕上展示高清照片。
TI-TS3USB3031是一款适用于便携式电子设备的高效能、低功耗的USB和MHL/MyDP切换器，它提供了一种便捷的方式，以满足现代移动设备对高速数据传输和多媒体输出的需求。
5
TS3USB3031
www.ti.com.cn
ZHCSBM1C –SEPTEMBER 2013–REVISED MARCH 2017
Copyright © 2013–2017, Texas Instruments Incorporated
6.5 Electrical Characteristics
T
A
= –40°C to 85°C, typical values are at V
CC
= 3.3 V and T
A
= 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
MHL SWITCH
R
ON
ON-state resistance V
CC
= 2.5 V, V
I/O
= 1.5V, I
ON
= –8 mA (see Figure 9) 5.5 7 Ω
ΔR
ON
ON-state resistance match
between + and – paths
V
CC
= 2.5 V, V
I/O
= 1.5 V, I
ON
= –8 mA 0.1 Ω
R
ON (FLAT)
ON-state resistance flatness V
CC
= 2.5 V, V
I/O
= 1.5 V to 3.3 V, I
ON
= –8 mA 1 Ω
I
OZ
OFF leakage current
V
CC
= 4.3 V, Switch OFF, V
MHL+/MHL–
= 1.5 V to 3.3 V,
V
D+/D–
= 0 V (see Figure 10)
–2 2 µA
I
OFF
Power-off leakage current
V
CC
= 0 V, Power off, V
MHL+/MHL–
= 1.5 V to 3.3 V,
V
D+/D–
= NC
–10 10 µA
I
ON
ON leakage current
V
CC
= 4.3 V, Switch ON, V
MHL+/MHL–
= 1.5 V to 3.3 V,
V
D+/D–
= NC
–2 2 µA
USB SWITCH (USB1 and USB2)
R
ON
ON-state resistance V
CC
= 2.5 V, V
I/O
= 0.4 V, I
ON
= –8 mA (see Figure 9) 4.5 6 Ω
ΔR
ON
ON-state resistance match
between + and – paths
V
CC
= 2.5 V, V
I/O
= 0.4 V, I
ON
= –8 mA 0.1 Ω
R
ON (FLAT)
ON-state resistance flatness V
CC
= 2.5 V, V
I/O
= 0 V to 0.4 V, I
ON
= –8 mA 1 Ω
I
OZ
OFF leakage current
V
CC
= 4.3 V, Switch OFF, V
USB+/USB–
= 0 V to 0.4 V,
V
D+/D–
= 0 V (see Figure 10)
–2 2 µA
I
OFF
Power-off leakage current
V
CC
= 0 V, Switch ON or OFF,
V
USB+/USB–
= 0 V to 0.4 V, V
D+/D–
= NC
–10 10 µA
I
ON
ON leakage current
V
CC
= 4.3 V, Switch ON, V
USB+/USB–
= 0 V to 0.4 V,
V
D+/D–
= NC
–2 2 µA
DIGITAL CONTROL INPUTS (SEL)
V
IH
Input logic high V
CC
= 2.5 V to 4.3 V 1.3 V
V
IL
Input logic low V
CC
= 2.5 V to 4.3 V 0.6 V
I
IN
Input leakage current V
CC
= 4.3 V, V
I/O
= 0 V to 3.6 V, V
IN
= 0 V to 4.3 V –10 10 µA
6.6 Dynamic Characteristics
T
A
= –40°C to 85°C, Typical values are at V
CC
= 3.3 V, T
A
= 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
pd
Propagation delay
R
L
= 50 Ω, CL = 5 pF, V
CC
= 2.5 V to 4.3 V,
V
I/O(USB)
= 0.4 V, V
I/O(MHL)
= 3.3 V
50
ps
t
switch
Switching time between USB/MHL
channels in active modes
R
L
= 50 Ω, CL = 5 pF, V
CC
= 2.5 V to 4.3 V,
V
I/O(USB)
= 0.4 V, V
I/O(MHL)
= 3.3 V
400
ns
t
ON
Switch turnon time (from disabled
to active mode)
R
L
= 50 Ω, CL = 5 pF, V
CC
= 2.5 V to 4.3 V,
V
I/O(USB)
= 0.4 V, V
I/O(MHL)
= 3.3 V
100
µs
t
OFF
Switch turnoff time (from active to
disabled mode)
R
L
= 50 Ω, CL = 5 pF, V
CC
= 2.5 V to 4.3 V,
V
I/O(USB)
= 0.4 V, V
I/O(MHL)
= 3.3 V
100
µs
C
ON(MHL)
MHL path, ON capacitance V
CC
= 3.3 V, V
I/O
= 0 V or 3.3 V, f = 240 MHz, Switch ON 1.3 pF
C
ON(USB)
USB1 and USB2 paths, ON
capacitance
V
CC
= 3.3 V, V
I/O
= 0 V or 3.3 V, f = 240 MHz, Switch ON 1
pF
C
OFF(MHL)
MHL path, OFF capacitance V
CC
= 3.3 V, V
I/O
= 0 V or 3.3 V, f = 240 MHz, Switch OFF 1 pF
C
OFF(USB)
USB1 and USB2 paths, OFF
capacitance
V
CC
= 3.3 V, V
I/O
= 0 V or 3.3 V, f = 240 MHz, Switch OFF 0.8
pF
C
I
Digital input capacitance V
CC
= 3.3 V, V
I
= 0 V or 2 V 2.2 pF
O
ISO (MHL)
MHL path, OFF isolation
V
S
= –10 dBm, V
DC_BIAS
= 2.4 V, RT = 50 Ω, f = 240 MHz
(see Figure 11), Switch OFF
–38
dB
O
ISO (USB)
USB path, OFF isolation
V
S
= –10 dBm, V
DC_BIAS
= 0.2 V RT = 50 Ω, f = 240 MHz
(see Figure 11), Switch OFF
–38
dB
X
TALK (MHL)
MHL channel crosstalk
V
S
= –10 dBm, V
DC_BIAS
= 2.4 V, RT = 50 Ω, f = 240 MHz
(see Figure 12), Switch ON
–41
dB
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