FSA321 Datasheet PDF - Fairchild Semiconductor
|Description||USB2.0 Hi-Speed (480Mbps) and Audio Switches|
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FSA321 — USB2.0 Hi-Speed (480Mbps) and Audio
Switches with Negative Signal Capability and Built-in
Termination on Unselected Audio Paths
Audio: 1.8Ω Typical On Resistance
HS-USB: 8Ω Typical On Resistance
HS-USB: 5pF Typical On Capacitance
USB Path -3db Bandwidth: > 720MHz
Negative Swing Capable Audio Channel
Power-off Protection on Common D+/R, D-/L Ports
Automatic USB Detection (Configurable)
Power-Off Protection on all I/O Ports
OVT on all I/O Ports
Flow-Through Pin Out Eliminates PCB Vias
Built-In Termination on Unselected Audio Paths to
Inhibit Audio Pop
The FSA321 is a Double-Pole, Double Throw (DPDT)
multiplexer that combines a low-distortion audio and a
USB2.0 High-Speed (HS) switch path. This configuration
enables audio and USB data to share a common
connector port. The architecture is designed to allow
audio signals to swing below ground. This means a
common USB and headphone jack can be used for
personal media players and portable peripheral devices.
Since USB2.0 is an industry standard for shared data-
path in portable devices, FSA321 can be configured for
automatic VBUS detection. The FSA321 includes a
power-off feature as well as over-voltage tolerance to
minimize current consumption when VSW exceeds VCC.
Typical applications involve switching in portables and
consumer applications, such as cell phones, digital
cameras, and notebooks with hubs or controllers.
MP3, Cell Phone, PDA, Digital Camera, and
LCD Monitor, TV, and Set-Top Box
For additional performance information, please contact
Part Number Package Number Top Mark
10-Lead Quad, Ultrathin MLP, 1.4 x 1.8mm
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
Figure 1. FSA321 Analog Symbol
© 2007 Fairchild Semiconductor Corporation
FSA321 • Rev 1.0.4
On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for FSA321 electronic component.
|Information||Total 2 Pages|
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|FSA321||The function is USB2.0 Hi-Speed (480Mbps) and Audio Switches.|
|FSA3259||The function is Dual SP3T Analog Switch.|
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