NLAS8252

http://onsemi.com

6

Detailed Description

The NLAS8252 is a DP3T switch designed for

applications where a single USB connector is used for

multiple data applications within a portable system. Two

differential signals from a USB connector can be routed to

3 different end locations. The first, channel 1, is optimized

for a full speed, USB 2.0 transceiver. The second and third,

channels 2 and 3, are optimized for UART or remote data

applications.

Control Inputs Select Logic

The NLAS8252 is made up of two, 3-throw switches

operating off of the same internal enable signal. For each

switch, a signal can pass from the common pin to any of

three terminals. Whenever COM1 is closed to terminal 1S2,

COM2 will respectively be closed to terminal 2S2. The

select logic is controlled by two inputs, IN1 and IN2,

connecting the common pins to the terminals according to

the function table found on page 2. Since there are four

possible control states but only 3 possible terminals, the first

combination results in a open connection for all three

terminals.

2.7 V

2.8

2.0

1.6

3.2

1.2

0.8

0.4

0

0

10

20

30

50

80

90

100

40

60

70

2.4

110

120

130

140

150

160

170

180

190

200