参数资料
| 型号： | STF203-22.TCT |
| 厂商： | Semtech |
| 文件页数： | 4/6页 |
| 文件大小： | 0K |
| 描述： | IC TVS USB 22OHM RES SC70-6 |
| 标准包装： | 1 |
| 电压 - 工作： | 5.25V |
| 技术： | 混合技术 |
| 功率（瓦特）： | 100mW |
| 电路数： | 4 |
| 应用： | 通用 |
| 封装/外壳： | 6-TSSOP，SC-88，SOT-363 |
| 供应商设备封装： | SC-70-6 |
| 包装： | 标准包装 |
| 产品目录页面： | 1357 (CN2011-ZH PDF) |
| 其它名称： | STF203-22DKR |
STF203-15 THRU STF203-33
PROTECTION PRODUCTS
Applications Information
Device Connection
The STF203 is designed to provide termination, EMI
filtering and ESD protection for one USB port. The
Figure 1 - Preferred Connection Diagram
(Full Speed Devices)
From Connector
device is connected as follows:
1 . Full-Speed Devices: For full-speed devices the
pull-up resistor is connected to the D+ line. Route
the D+ line from the connector to pin 1 of the
1
2
3
STF203
6
5
4
STF203. Pin 6 is connected to the D+ line of the
IC. Route the D- line from the connector to pin 3.
Pin 4 is connected to the D- line of the IC. Pin 5 is
connected to the voltage supply line (V BUS ). Pin 2 is
connected to ground. Note that the input and
output connections may be reversed if necessary
(See Figure 3).
Figure 2 - Preferred Connection Diagram
(Low Speed Devices)
From Connector
2 . Low-Speed Devices : For low speed devices the
pull-up resistor is connected to the D- line. Route
the D- line from the connector to pin 1 of the
STF203. Pin 6 is connected to the D- line of the IC.
1
2
3
STF203
6
5
4
Route the D+ line from the connector to pin 3. Pin
4 is connected to the D+ line of the IC. Pin 5 is
connected to the voltage supply line (V BUS ). Pin 2 is
connected to ground. Note that the input and
output connections may be reversed if necessary
(See Figure 4).
USB Port Design Considerations
Figure 3 - Alternate Connection Diagram
(Full Speed Devices)
From Connector
The Universal Serial Bus (USB) specification requires
termination and filtering components for proper opera-
tion. In addition, an open USB socket is vulnerable to
hazardous ESD discharges in excess of 15kV. These
1
2
3
STF203
6
5
4
discharges can occur on the data lines or the voltage
bus. The STF203 is an easily implemented solution
that is designed to meet the termination and EMI filter
requirements of the USB specification revision 1.1. It
also provides ESD protection to IEC 61000-4-2,
level 4.
USB line termination is achieved with series resistors
Figure 4 - Alternate Connection Diagram
(Low Speed Devices)
From Connector
on both the D+ and D- lines. These resistors preserve
signal integrity by matching the cable impedance to
that of the differential driver. A 1.5k ? pull-up resistor
is used to identify an upstream port on either the D+
1
2
3
STF203
6
5
4
(full speed devices) or the D- (low speed devices) data
line. Capacitors are used for EMI suppression. TVS
diodes provide ESD protection of both (D+ and D-)
data lines and the voltage bus (V BUS ). The STF203
integrates all of these components in a small SC-70
package. This integrated solution simplifies design and
requires minimal board space.
? 2006 Semtech Corp.
4
www.semtech.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| STF203-33.TC | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Miscellaneous |
| STF203-33.TCT | 功能描述:IC TVS USB 33OHM RES SC70-6 RoHS:是 类别:过电压，电流，温度装置 >> TVS - 其它复合 系列:- 标准包装:1 系列:- 电压 - 工作:120V 电压 - 箝位:- 技术:混合技术 功率（瓦特）:- 电路数:1 应用:通用 封装/外壳:模块 供应商设备封装:- 包装:散装 其它名称:UAK 2-PE/S-X-120AC-STUAK2-PE/S-X-120AC-ST |
| STF203-33.TCT | 制造商:Semtech Corporation 功能描述:TRANSIENT SUPPRESSOR DIODE ARRAYBIDIREC |
| STF203-XX | 制造商:未知厂家 制造商全称:未知厂家 功能描述:USB Upstream Port Filter & TVS for EMI Filtering and ESD Protection |
| STF2045C | 功能描述:DIODE ARRAY SCHOTTKY 45V ITO220 制造商:smc diode solutions 系列:- 包装:管件 零件状态:有效 二极管配置:1 对共阴极 二极管类型:肖特基 电压 - DC 反向（Vr）（最大值）:45V 电流 - 平均整流（Io）（每二极管）:- 不同 If 时的电压 - 正向（Vf）:580mV @ 10A 速度:快速恢复 = 200mA（Io） 反向恢复时间（trr）:- 不同?Vr 时的电流 - 反向漏电流:2mA @ 45V 安装类型:通孔 封装/外壳:TO-220-3 隔离片 供应商器件封装:ITO-220AB 标准包装:50 |
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