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参数资料
| 型号： | MAX4989ETD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/8页 |
| 文件大小： | 0K |
| 描述： | IC CROSSPOINT SWITCH 14TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program Low Voltage Analog Switches Overview |
| 标准包装： | 1 |
| 功能： | 交叉点开关 |
| 导通状态电阻： | 5 欧姆 |
| 电压电源： | 单电源 |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 5.5 V |
| 电流 - 电源： | 1µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-WFDFN 裸露焊盘 |
| 供应商设备封装： | 14-TDFN-EP（3x3） |
| 包装： | 标准包装 |
| 其它名称： | MAX4989ETD+TDKR |
Pin Descriptions
Detailed Description
The MAX4989 is a USB 2.0 bidirectional crosspoint
switch that allows the user to connect any 2 of 4 USB
pairs. The device operates from a single +2.7V to
+5.5V supply and features an internal charge pump
to permit the full rail-to-rail swing necessary for USB
low-/full-/Hi-Speed applications with data rates up to
480Mbps.
Control Logic Inputs
The MAX4989 provides three control logic inputs, C0,
C1, and C2, to control the switch connections as
shown in the
Functional Diagram/Truth Table. Driving
the control logic inputs rail-to-rail minimizes power
consumption.
Shutdown Mode
The MAX4989 features a shutdown mode that reduces
the supply current to less than 0.5A and places all
switch terminals in high impedance. Drive all control
inputs high or all control inputs low to place the device in
shutdown mode (see
Functional Diagram/Truth Table.)
USB Switching
The low on-resistance and low on-capacitance of the
MAX4989 make it ideal for high-performance Hi-Speed
USB 2.0 switching applications. The MAX4989 is ideal
for routing USB data lines and for applications that
require switching between multiple USB hosts or
devices (Figure 4).
Layout
Hi-Speed USB requires careful PCB layout with con-
trolled-impedance matched traces of equal lengths.
Ensure that bypass capacitors are as close as possible
to the device. Use large ground planes where possible.
Power-Supply Sequencing
Caution: Do not exceed the absolute maximum rat-
ings because stresses beyond the listed ratings
may cause permanent damage to the device.
Proper power-supply sequencing is recommended for
all devices. Always apply VCC before applying signals,
especially if the signal is not current limited.
Chip Information
PROCESS: BiCMOS
MAX4989
USB 2.0 Hi-Speed 2-of-4 Crosspoint Switch
_______________________________________________________________________________________
7
PIN
NAME
FUNCTION
1
Y-
Inverting Input/Output of Terminal Y
2
Y+
Noninverting Input/Output of Terminal Y
3
GND
Ground
4
Z+
Noninverting Input/Output of Terminal Z
5
Z-
Inverting Input/Output of Terminal Z
6
C0
Control Input 0
7
C1
Control Input 1
8
C2
Control Input 2
9VCC
Positive Supply Voltage Input. Bypass VCC to GND with a 0.1F ceramic capacitor as close as possible to
the device.
10
X-
Inverting Input/Output of Terminal X
11
X+
Noninverting Input/Output of Terminal X
12
GND
Ground
13
W+
Noninverting Input/Output of Terminal W
14
W-
Inverting Input/Output of Terminal W
—EP
Exposed Pad. EP can be connected to GND or left unconnected. EP is not intended as an electrical
connection point.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4989EVKIT+ | 功能描述:交换机 IC 开发工具 MAX4989 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:USB Power Switches 工具用于评估:MAX4984E 工作电源电压:2.8 V to 5.5 V |
| MAX498CWI | 功能描述:多路器开关 IC RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| MAX498CWI+ | 功能描述:多路器开关 IC RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| MAX498CWI+T | 功能描述:多路器开关 IC RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| MAX498CWI-T | 功能描述:多路器开关 IC RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
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