Fairchild FSUSB42UMX, FSUSB42UMX, FSUSB42MUX, FSUSB42MUX Schematic [ru]

July 2015

FSUSB42 — Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch

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

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 Ω Typical
 Low Power Consumption: 1 μA Maximum

- 15 μA Maximum I

Range (VIN=1.8 V, VCC=4.4 V)

over an Expanded Voltage

CCT

 Wide -3 db Bandwidth: > 720 MHz
 Packaged in:

- 10-Lead UMLP (1.4 x 1.8 mm)

- 10-Lead MSOP

 8 kV ESD Rating, >16 kV Power / GND ESD Rating
 Over-Voltage Tolerance (OVT) on all USB Ports

Up to 5.25 V without 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-power, two-port,
high-speed, USB2.0 switch. Configured as a double­pole, double-throw switch (DPDT) switch, it is optimized
for switching between any combination of high-speed
(480 Mbps) or Full-Speed (12 Mbps) sources.

The FSUSB42 is compatible with the requirements of
USB2.0 and features an extremely low on capacitance
(CON) of 3.7 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 FSUSB42 contains special circuitry on the switch
I/O pins for applications where the VCC supply is
powered-off (VCC=0 V), 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 (VCC). This feature is especially
valuable to ultra-portable applications, such as cell
phones, allowing for direct interface with the general­purpose I/Os of the baseband processor. Other
applications include switching and connector sharing in
portable cell phones, PDAs, digital cameras, printers,
and notebook computers.

Ordering Information

© 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSUSB42 • Rev. 1.25

Figure 1. Analog Symbol

FSUSB42 — Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch

Figure 2. 10-Lead UMLP (Top-Through View)

Figure 3. 10-Lead MSOP (Top-Through View)

UMLP Pin#

MSOP Pin#

Name

Description

1 3 D+

Common USB Data Bus

2 4 D-

Common USB Data Bus

3 5 GND

Ground 4 6

HSD1-

Multiplexed Source Input 1

5 7 HSD1+

Multiplexed Source Input 1

6 8 HSD2-

Multiplexed Source Input 2

7 9 HSD2+

Multiplexed Source Input 2

8

10

/OE

Switch Enable

9 1 VCC

Supply Voltage

10 2 Sel

Switch Select

SEL

/OE

Function

X

HIGH

Disconnect

LOW

LOW

D+= HSD1+, D-= HSD1-

HIGH

LOW

D+= HSD2+, D-= HSD2-

V

cc

GND

1

85

4

3

2

Sel

D+D-

HSD2+HSD2-

HSD1+

/OE

9

10

6 7

HSD1-

5

4

3

2

1

6

7

8

9

10

V

CC

Sel

D+

D-

GND

/OE

HSD1-

HSD2-

HSD1+

HSD2+

Pin Assignments

Pin Definitions

Truth Table

Notes:

1. LOW ≤VIL.

2. HIGH ≥VIH.

3. X=Don’t Care.

© 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSUSB42 • Rev. 1.25 2

FSUSB42 — Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch

Symbol

Parameter

Min.

Max.

Unit

VCC

Supply Voltage

-0.5

5.6 V V

CNTRL

DC Input Voltage (S, /OE)

(4)

-0.5

VCC V VSW

DC Switch I/O Voltage

(4)

(VCC=0V)

-0.50

5.25

V

IIK

DC Input Diode Current

-50 mA

I

OUT

DC Output Current

100

mA

T

STG

Storage Temperature

-65

+150

°C

MSL

Moisture Sensitivity Level (JEDEC J-STD-020A)

1 Level

ESD

Human Body Model, JEDEC: JESD22-A114

All Pins

7

kV

I/O to GND

8

Power to GND

16

D+/D- 9

IEC 61000-4-2 System on USB Connector
Pins D+ & D-

Air Discharge

15

Contact

8

Charged Device Model, JEDEC: JESD22-C101

2

Symbol

Parameter

Min.

Max.

Unit

V

CC

Supply Voltage

2.4

4.4

V

V

CNTRL

Control Input Voltage (S, /OE)

(5)

0

VCC

V

V

SW

Switch I/O Voltage

-0.5

4.5 V T

A

Operating Temperature

-40

+85

°C

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.

Note:

4. The input and output negative ratings may be exceeded if the input and output diode current ratings are observed.

Recommended Operating Conditions

The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to Absolute Maximum Ratings.

Note:

5. The control input must be held HIGH or LOW and it must not float.

© 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSUSB42 • Rev. 1.25 3

FSUSB42 — Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) UART Switch

Symbol

Parameter

Condition

VCC (V)

TA=- 40°C to +85°C

Unit

Min.

Typ.

Max.

V

IK

Clamp Diode Voltage

IIN=-18mA

3.0

-1.2

V

V

IH

Input Voltage High

2.4 to 3.6

1.3 V 4.3

1.7

V

IL

Input Voltage Low

2.4 to 3.6

0.5 V 4.3

0.7

I

IN

Control Input Leakage

VSW=0 to VCC

0 to 4.3

-1 1

µA

IOZ

Off State Leakage

0 Dn, HSD1n, HSD2n
3.6 V

4.3

-2 2

µA

I

OFF

Power-Off Leakage Current
(All I/O Ports)

VSW=0 V to 4.3 V, VCC=0 V
Figure 5

0

-2 2

µA

RON

HS Switch On Resistance

(6)

VSW=0.4 V, ION=-8 mA
Figure 4

2.4

4.5

7.5



3.0

3.9

6.5

∆RON

HS Delta R

ON

(7)

VSW=0.4 V, ION=-8 mA

3.0

0.65



ICC

Quiescent Supply Current

V

CNTRL

=0 or VCC, I

OUT

=0

4.3 1 µA

I

CCT

Increase in I

CC

Current per

Control Voltage and VCC

V

CNTRL

=2.6 V, VCC=4.3 V

4.3

10

µA

V

CNTRL

=1.8 V, VCC=4.3 V

4.3

15

µA

DC Electrical Characteristics

All typical value are at TA=25°C unless otherwise specified.

Notes:

6. Measured by the voltage drop between HSDn and Dn pins at the indicated current through the switch.
On resistance is determined by the lower of the voltage on the two (HSDn or Dn ports).

7. Guaranteed by characterization.

© 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSUSB42 • Rev. 1.25 4