参数资料
型号: STF202-22T1
厂商: ON Semiconductor
文件页数: 5/6页
文件大小: 0K
描述: IC FILTER USB ESD PROTECT 6TSOP
产品变化通告: LTB Notification 03/Jan/2008
标准包装: 1
系列: STF202-22
类型: 低通
技术: RC(Pi)
通道数: 2
电阻 - 通道 (Ohms): 22
值: R = 22 欧姆,C = 68pF
ESD 保护:
滤波器阶数: 2nd
应用: USB
封装/外壳: SC-74,SOT-457
尺寸/尺寸: 0.118" L x 0.059" W(3.00mm x 1.50mm)
高度: 0.043"(1.10mm)
包装: 剪切带 (CT)
工作温度: -55°C ~ 125°C
其它名称: STF202-22T1OSCT
STF202 ? 22T1G
The Figure 10 describes in a simplified way what the USB
port components are. As shown in this diagram, there are
signals for upstream and downstream ports which must be
provided with Line Termination and EMI Filtering to meet
the requirements of the USB specification revision 1.1. In
addition to the Line termination and EMI Filtering, it is also
needed to protect the USB I/O Lines against ESD
conditions, so TVS devices must be added for these
purposes.
CLK
CRISTAL
XTAL1
V CC
REGULATOR
XTAL2
GND
To
DPO
DP1 ? DP4
D+
Upstream
Ports
DMO
DM1 ? DM4
D ?
USB Data Lines
and Power to
Downstream
OC1 ? OC4
PWR1 ? PWR4
POWER
SWITCHING
V BUS
GND
Ports
Figure 10.
As mentioned before, the ON Semiconductor STF202
device provides “upstream termination”, EMI Filtering and
ESD Protection to IEC61000 ? 4 ? 2 in an integrated solution
placed in a small and single package (TSOP ? 6, Case 318G).
The typical application for the STF202 device is shown in
the Figure 11.
V BUS
D+
V BUS
D+
D ?
DOWNSTREAM
TERMINATION
TVS
D1D+
D1D ?
6
5
4
D ?
GND
STF202
GND
1
2
3
POWER
SWITCH
OC
OC
PWR
PWR
DOD+
DOD ?
V BUS
D+
D ?
DOWNSTREAM
TERMINATION
TVS
D2D+
D2D ?
REGULATOR
GND
USB CONTROLLER
Figure 11.
http://onsemi.com
5
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