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参数资料
| 型号： | NUF2221W1T2 |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 通用总线功能 |
| 英文描述： | USB Upstream Terminator with ESD Protection |
| 中文描述： | 2-LINE 1500 ohm OTHER TERMINATOR, PDSO6 |
| 封装： | SC-88, SC70, SOT-363, 6 PIN |
| 文件页数： | 4/6页 |
| 文件大小： | 45K |
| 代理商： | NUF2221W1T2 |
NUF2221W1T2
http://onsemi.com
4
Figure 5. Device Description
1
2
3
6
5
4
D2(C)
D1(C)
C1
D2(i)
D1(i)
GND
RS
C1
RS
RUP
VBUS
Connection for Full- Speed and Low-Speed Devices
The USB 1.1 specification calls for two data rates:
Full-speed devices - operates in 12 Mb/s
Low-speed devices that work in 1.5 Mb/s.
The NUF2221W1T2 device can be shaped for either
full-speed or low-speed by connecting one of the data lines
(D+, D-) to a 3.3 V voltage supply through the 1.5 K pull
up resistor. The device’s connection diagrams for each speed
are described as follows:
Full-Speed Connection
The Pull up resistor (RUP) is connected to the D+ Line.
The terminal 5 is connected to a 3.3 V voltage supply while
the terminal 2 is connected to ground. The input of the D+
line is connected in the terminal 1 which outputs from the
terminal 6. Finally, the input of the D- line is connected in
the terminal 3 which outputs from the terminal 4. Figure 6
shows the connections of the NUF2221W1T2 device for
“Full-Speed”.
3.3 V
D+
D-
D+
D-
0
Figure 6. Full Speed Connection
1
2
3
6
5
4
C1
RS
RS
RUP
U
C
U
C
C1
Low-Speed Connection
The Pull up resistor (Rpu) is connected to the D- Line. The
terminal 5 is connected to a 3.3 V voltage supply while the
terminal 2 is connected to ground. The input of the D- line
is connected in the terminal 1 which outputs from the
terminal 6. Finally, the input of the D+ line is connected in
the terminal 3 which outputs from the terminal 4. The
Figure 7 shows the connections of the NUF2221W1T2
device for “Low-Speed”.
Figure 7. Low Speed Connection
3.3 V
D+
D-
D+
D-
0
1
2
3
6
5
4
C1
RS
RS
RUP
U
C
U
C
C1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NUF2221W1T2_05 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:USB Upstream Terminator with ESD Protection |
| NUF2221W1T2G | 功能描述:电磁干扰滤波器 Zener USB Upstream Terminator w/ESD RoHS:否 制造商:STMicroelectronics 电容:12 pF 电路类型: 最大直流电流: 最大直流电阻: 电压额定值:6 V 容差: 端接类型:SMD/SMT 工作温度范围:- 30 C to + 85 C 系列:EMIF03 |
| NUF2221W1T2G | 制造商:ON Semiconductor 功能描述:RC N/W FILTER 22OHM/42PF SC-88 |
| NUF2221W1T2-REL-REPORT | 制造商:未知厂家 制造商全称:未知厂家 功能描述:NUF2221W1T2 Reliability Report |
| NUF2222FC | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:2 Line USB 1.1 Upstream EMI Filter |
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