参数资料
| 型号： | FSA806UMX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 6/12页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH USB/UART/AUD 12UMLP |
| 标准包装： | 5,000 |
| 功能： | USB 开关，音频，UART |
| 电路： | 1 x SP3T |
| 导通状态电阻： | 9 欧姆（USB），3 欧姆（音频） |
| 电压电源： | 单电源 |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 4.4 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-UFQFN |
| 供应商设备封装： | 12-UMLP（1.8x1.8） |
| 包装： | 带卷 (TR) |
2010 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FSA806 Rev. 1.0.1
3
FSA806
—
USB2.0
High-Speed
(480Mbps),
UART,
a
nd
Audio
Switch
with
Negative
Signal
Capability
Mode Descriptions
The
FSA806
select
pins
control
the
switching
operations, SEL[0] and SEL[1] described in Table 1
Table 1.
Selection Truth Table
SEL[1]
SEL[0]
Switch Action
Description
0
OPEN
Open all switch paths (device in low-power mode)
0
1
USB1, UART
Closes USB1 path to D+/D-, default condition
(1)
- DP_CON connected to DP_HOST1
- DM_CON connected to DM_HOST1
1
0
USB2, UART
Closes USB2 path to D+/D-
- DP_CON connected to DP_HOST2
- DM_CON connected to DM_HOST2
1
AUDIO
Closes audio path to D+/D- only
- DP_CON connected to R_HOST
- DM_CON connected to L_HOST
Notes:
1.
The SELECT pins are CMOS inputs and should not be left in a floating condition. Some applications require a
UART path be in the CLOSED position on power-up for initial programming of the device under test. If that
condition is desired, the two SELECT pins should be pulled to the correct levels with external resistors that
should exceed 100K
Ω to reduce the static power consumption. In other applications, adding weak pull-down
resistors to GND defaults the device to all paths open (low-power mode).
2.
When the audio switch is in the OPEN position, the R and L are terminated to GND with internal termination
resistors to discharge any stray capacitance that could cause audio pop.
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