STF203-22.TCT

STF203 系列 双向 USB 上游端口 滤波和TVS - SC-70-6

The is an USB upstream Port Filter and TVS Diode for EMI filtering and ESD protection. It is constructed using a proprietary technology that allows passive components. The device is an easily implemented solution for meeting the requirements of revision 1.1 of the USB specification. The value of series resistance added to the output impedance of the USB driver must be as close to possible to the 45R characteristic impedance of the cable 90R balanced to minimize transmission line reflections. The 1.5kR pull-up resistor is required by the USB specification to identify the equipment as either a full-speed connected to D+ line or low-speed connected to D line device. The 47pF capacitors are required to bypass high frequency energy to ground and to control the edge rate of the USB signals. The TVS diodes on the input/output pins provide suppression of ESD voltages in excess of ±15kV air discharge and ±8kV contact discharge per IEC 61000-4-2, level 4.

.

Line termination is achieved with series resistors on both the D+ and D- USB lines

.

Provides ESD protection of both D+ and D- data lines and the voltage bus VBUS

.

Bidirectional EMI/RFI filtering and line termination with integrated ESD protection

.

Filtering and termination for one USB port

.

Low leakage current

.

Solid-state technology

.

-40 to 125°C Operating temperature range