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FSUSB45 — Hi-Speed USB2.0 (480Mbps) Switch with Dedicated Charger Port Detect
July 2013
FSUSB45 — High-Speed USB2.0 (480Mbps) Switch
with Dedicated Charger Port Detect
Features
Low On Capacitance: 7.0 pF Typical
Low On Resistance: 3.9 Ω Typical
Low Power Consumption: 1 μA Maximum
Description
The FSUSB45 is a bi-directional, low-power, two-port,
High-Speed, USB2.0 switch. Configured as a double-
pole, double-throw (DPDT) switch, it is optimized for
switching between two HS (480 Mbps) sources or an
HS source and a Full-Speed (12 Mbps) source.
The FSUSB45 is compatible with the requirements of
USB2.0 and features an extremely low on capacitance
(C
ON
) of 7.0 pF. The wide bandwidth of this device
(720 MHz) exceeds the bandwidth needed to pass the
third harmonic, resulting in signals with minimum edge
and phase distortion. Superior channel-to-channel
crosstalk also minimizes interference.
The FSUSB45 contains special circuitry on the switch
I/O pins for applications where the V
CC
supply is
powered-off (V
CC
=0), which allows the device to
withstand an over-voltage condition. This device is
designed to minimize current consumption even when
the control voltage applied to the SEL pin is lower than
the supply voltage (V
CC
). This feature is especially
valuable to mobile applications, such as cell phones,
allowing for direct interface with the general-purpose
I/Os of the baseband processor. An additional feature is
the detection of the 1,1 state on D+/D- to signal an
interrupt (INT) to the processor when entering a
dedicated charging port mode of operation.
INT
-
15 μA Maximum I
CCT
over an Expanded Voltage
Range (V
IN
=1.8 V, V
CC
=4.3 V)
Wide -3 db Bandwidth: > 720 MHz
Packaged in:
-
10-Lead MicroPak™ (1.6 x 2.1 mm)
-
10-Lead UMLP (1.4 x 1.8 mm)
8 kV ESD Rating, >16 kV Power/GND ESD Rating
Power-Off Protection on All Ports When V
CC=
0 V
-
D+/D- Pins Tolerate up to 5.25 V
Applications
Cell Phone, PDA, Digital Camera, and Notebook
LCD Monitor, TV, and Set-Top Box
IMPORTANT NOTE:
For additional performance information, please contact
analogswitch@fairchildsemi.com.
HSD1+
D+
HSD2+
HSD1-
D-
HSD2-
Sel
Figure 1. Analog Symbol
Ordering Information
Part Number
FSUSB45L10X
FSUSB45UMX
Top Mark
JA
JB
Operating
Temperature Range
-40 to +85°C
-40 to +85°C
Package
10-Lead, MicroPak™ 1.6 x 2.1 mm, JEDEC MO-255B
10-Lead, Quad, Ultrathin Molded Leadless Package
(UMLP), 1.4 x 1.8 mm
MicroPak™ is a trademark of Fairchild Semiconductor Corporation.
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