BLOCK DIAGRAM

D−

D+

1D−

1D+

2D−

2D+

S

OE

A

EN (see Note A)

B

Charge

Pump

TS3USB221

ORDERING INFORMATION

ORDERABLE PART NUMBER

TOP-SIDE MARKING

QFN – RSE

Reel of 3000

TS3USB221RSER

L5O

–40°C to 85°C

SON – DRC

Reel of 3000

TS3USB221DRCR

ZWG

(1)

Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.

(2)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

website at www.ti.com.

PIN DESCRIPTION

NAME

DESCRIPTION

OE

Bus-switch enable

S

Select input

D

Bus A

nD

Bus B

TRUTH TABLE

S

OE

FUNCTION

X

H

Disconnect

L

L

D = 1D

H

L

D = 2D

SIMPLIFIED SCHEMATIC, EACH FET SWITCH (SW)

A.

EN is the internal enable signal applied to the switch.

2

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