Data Sheet

© 2007 Semiconductor Components Industries, LLC. Publication Order Number:
October-2017, Rev. 2 FSUSB42/D
FSUSB42 Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch
FSUSB42 Low-Power, Two-Port, High-Speed,
USB2.0 (480Mbps) UART Switch
Features
Low On Capacitance: 3.7 pF Typical
Low On Resistance: 3.9 Typical
Low Pow er Consumption: 1 μA Maximum
- 15 μA Maximum I
CCT
over an Expanded Voltage
Range (V
IN
=1.8 V, V
CC
=4.4 V)
Wide -3 db Bandw idth: > 720 MHz
Packaged in:
- 10-Lead UMLP (1.4 x 1.8 mm)
- 10-Lead MSOP
8 kV ESD Rating, >16 kV Pow er / GND ESD Rating
Over-Voltage Tolerance (OVT) on all USB Ports
Up to 5.25 V w ithout External Components
Applications
Cell phone, PDA, Digital Camera, and Notebook
LCD Monitor, TV, and Set-Top Box
Description
The FSUSB42 is a bi-directional, low -pow er, tw o-port,
high-speed, USB2.0 sw itch. Configured as a double-
pole, double-throw sw itch (DPDT) sw itch, it is optimized
for sw itching betw een any combination of high-speed
(480 Mbps) or Full-Speed (12 Mbps) sources.
The FSUSB42 is compatible w ith the requirements of
USB2.0 and features an extremely low on capacitance
(C
ON
) of 3.7 pF. The w ide bandw idth of this device
(720 MHz) exceeds the bandw idth needed to pass the
third harmonic, resulting in signals w ith minimum edge
and phase distortion. Superior channel-to-channel
crosstalk also minimizes interference.
The FSUSB42 contains special circuitry on the sw itch
I/O pins for applications w here the V
CC
supply is
pow ered-off (V
CC
=0 V), w hich allow s the device to
w ithstand an over-voltage condition. This device is
designed to minimize current consumption even w hen
the control voltage applied to the SEL pin is low er than
the supply voltage (V
CC
). This feature is especially
valuable to ultra-portable applications, such as cell
phones, allow ing for direct interface w ith the general-
purpose I/Os of the baseband processor. Other
applications include sw itching and connector sharing in
portable cell phones, PDAs, digital cameras, printers,
and notebook computers.
Ordering Information
Part Number
Top Mark
Operating Temperature
Range
Package
FSUSB42UMX
HE
-40 to +85°C
10-Lead, Quad, Ultrathin Molded Leadless Package
(UMLP), 1.4 x 1.8 mm
FSUSB42MUX
FSUSB42
-40 to +85°C
10-Lead, Molded Small-Outline Package (MSOP)
JEDEC MO-187, 3.0 mm Wide
HSD1+
HSD2+
HSD1-
HSD2-
D-
D+
Control
Sel
/OE
Figure 1. Analog Symbol

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