ISL54228

2

FN7628.0

July 29, 2010

Pin Configurations

ISL54228

(8 LD 1.2x1.4 µTQFN)

TOP VIEW

ISL54228

(8 LD 2x2 TDFN)

TOP VIEW

NOTE: Switches Shown for OE = Logic “0”.

D-

1

5 D+

OVP

LOGIC

4MΩ

4MΩ

VDD

OE

COM-

COM+

D+

LP 1

2

3

4

8

7

6

5

GND

D-

PD

OVP

LOGIC

4MΩ

4MΩ

Pin Descriptions

µTQFN

TDFN

PIN NAME

DESCRIPTION

4

1

LP

Low Power Input

5

2

D+

USB Data Port

6

3

COM+

USB Data Port

74

GND

Ground Connection

8

5

COM-

USB Data Port

1

6

D-

USB Data Port

27

OE

Switch Enable

3

8

VDD

Power Supply

-

PD

PD

Thermal Pad. Tie to Ground or Float

Truth Table

INPUT

OUTPUT

SIGNAL AT COM PINS

LP

OE

D-, D+

STATE

0V to 3.6V

0

0

OFF

Normal

0V to 3.6V

0

1

ON

Normal

0V to 3.6V

1

0

OFF

Low Power

0V to 3.6V

1

1

ON

Normal

Overvoltage Range

0

0

OFF

OVP

Overvoltage Range

0

1

OFF

OVP

Overvoltage Range

1

0

OFF

Neg OVP

Limited Positive OVP

No Persistence Checking

Low Power

Overvoltage Range

1

1

OFF

OVP

NOTE: Logic “0” when ≤ 0.5V, Logic “1” when ≥ 1.4V with a 2.7V to 3.6V Supply.

ISL54228