Fairchild FSUSB22 service manual

March 2008

FSUSB22 — Low-Power, 2-Port, High-Speed USB 2.0

FSUSB22 — Low-Power, 2-Port, High-Speed USB 2.0 (480Mbps) Switch

(480Mbps) Switch

Features

 -40dB Off Isolation at 250MHz  -40dB Non-adjacent Channel Crosstalk at 250MHz  On Resistance: 4.5Ω Typical (RON)  -3dB Bandwidth: 750MHz  Low-Power Consumption: 1µA Maximum  Control Input: TTL Compatible  Bi-directional Operation  USB High-Speed and Full-Speed Signaling

Capability

Applications

 Cell Phones, PDAs, Digital Cameras, Notebook

Computers

Ordering Information

Operating

Part Number

FSUSB22BQX

FSUSB22QSC

FSUSB22QSCX

FSUSB22MTC

FSUSB22MTCX

All packages are lead free per JEDEC: J-STD-020B standard.

Temperature

Range

-40 to +85°C

16-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC MO-241, 2.5 x 3.5mm

16-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137,

0.150-inch Wide 16-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137,

0.150-inch Wide 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC

MO-153, 4.4mm Wide 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

Description

FSUSB22 is a low-power, high-bandwidth switch specially designed for applications switching high-speed USB 2.0 signals in handset and consumer applications; such as cell phone, digital camera, and notebook with hubs or controllers of limited USB I/O. The wide bandwidth (750MHz) allows signals to pass with minimum edge and phase distortion. Superior channelto-channel crosstalk results in minimal interference. It is compatible with the USB2.0 Hi-Speed standard.

.

Package

Packing

Method

Tape and

Reel

Tube

Tape and

Reel

Tube

Tape and

Reel

Logic Diagram Analog Symbol

D-

USB Port

Docking Station

Docking Connector

D+

1B

2

1B

1A

1

3

2

4

D+

USB

D-

Port

FSUSB22 — Low-Power, 2-Port, High-Speed USB 2.0 (480Mbps) Switch

V

S

CC

16

1

15

/OE

4B

14

1

4B

13

2

USB 2.0 Host Controller

D+

D-

D+

D-

FSUSB22

Notebook Computer

Figure 1. Logic Diagram

1

S

2

1B

1

3

1B

2

4

1A

5

2B

1

6

2B

2

7

2A

GND

8

D+

USB Port

D-

D+

USB

D-

Port

V

16

CC

/OE

15

4B

14

1

4B

13

2

4A

12

3B

11

1

3B

10

2

3A

9

2B

2A

5

1

6

2

7

8

12

11

10

9

GND 3A

Figure 2. Analog Symbol

V

S

CC

116

1B

2B

1A

2A

2

1

3

2

4

5

1

6

2

7

8

GND 3A

15

14

13

12

11

10

9

4A

3B

/OE

4B

4A

3B

1

2

1

2

1

2

Figure 3. QSOP and TSSOP Pin Configuration Figure 4. Pad Assignment for DQFN

Pin Descriptions

Pin # Pin Names Description

1 S Select Input

2,3,5,6,10,11,13,14 1B1,1B2, 2B1,2B2,3B2,3B1,4B2,4B1 Bus B

8 GND Ground

4,7,9,12 1A,2A,3A,4A Bus A

15 /OE Bus Switch Enable 16 VCC Supply Voltage

Truth Table

S OE Function

Don’t Care HIGH Disconnect

LOW LOW A=B1

HIGH LOW A=B2

FSUSB22 — Low-Power, 2-Port, High-Speed USB 2.0 (480Mbps) Switch

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.

Symbol Parameter Min. Max. Unit

VCC Supply Voltage -0.5 4.6 V

VS DC Switch Voltage -0.5 VCC + 0.05 V

VIN DC Input Voltage

IIK DC Input Diode Current, VIN<0V -50 mA

I

DC Output Sink Current 128 mA

OUT

I

/ I

CC

DC V

GND

T

Storage Temperature Range -65 +150 °C

STG

/ GND Current ±100 mA

CC

ESD Human Body Model, JESD22-A114 4 kV

Note:

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

(1)

-0.5 4.6 V

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.

Symbol Parameter Min. Max. Unit

VCC Power Supply Operating 3.0 3.6 V

VIN Input Voltage 0 VCC V

V

Output Voltage 0 VCC V

OUT

tr, tf Input Rise and Fall Time

Switch Control Input Switch I/O 0 DC

TA Operating Temperature, Free Air -40 +85 °C

Note:

2. Unused control inputs must be held HIGH or LOW. They may not float.

(2)

0 5

ns/V

DC Electrical Characteristics

Typical values are at V

= 3.0V and TA = 25°C.

CC

FSUSB22 — Low-Power, 2-Port, High-Speed USB 2.0 (480Mbps) Switch

Symbol Parameter Conditions VCC (V)

TA=-40 to +85°C

Min. Typ. Max.

VIK Clamp Diode Voltage I VIH High-Level Input Voltage 3.0 to 3.6 2.0 V VIL Low-Level Input Voltage 3.0 to 3.6 0.8 V

IIN Input Leakage Current

I

OFF

RON Switch On Resistance

ΔRON

R

FLAT(ON)

Off-state Leakage Current

Delta R

ON

On Resistance Flatness

(3)

ICC Quiescent Supply Current

Notes:

3. Measured by the voltage drop between the A and B pins at the indicated current through the switch. On resistance is determined by the lower of the voltages on the A or B pins.

4. Flatness is defines as the difference between the maximum and the minimum value on resistance over the specified range of conditions.

= -18mA 3.0 -1.2 V

IN

0 ≤ VIN ≤ 3.6V 0 ≤ A, B ≤ VCC

3.6 ±1.0 µA

VIN = 0.8V, ION = 8mA 3.0 5 7 V

= 3.0V, ION = 8mA 3.0 4.5 6.5

IN

VIN = 0.8V, VIN = 0V - 1.5, I

= 8mA

ON

(4)

I

= 8mA 3.0 1

OUT

VIN = VCC or GND, I

= 0

OUT

3.0 0.3

3.6 1 µA

Units

Ω

Ω Ω