© Semiconductor Components Industries, LLC, 2015

April, 2015 − Rev. 5

1

Publication Order Number:

NCN1154/D

NCN1154

USB 2.0 High Speed, UART

and Audio Switch with

Negative Signal Capability

The NCN1154 is a DP3T switch for combined true−ground audio,

USB 2.0 high speed data, and UART applications. It allows portable

systems to use a single port to pass either high speed data or audio

signals from an external headset; the 3 channels being compliant to

USB 2.0, USB 1.1 and USB 1.0.

The switch is capable of passing signals with negative voltages as

low as 2 V below ground. The device features shunt resistors on the

audio ports. These resistors are switched in when the audio channel is

off and provide a safe path to ground for any charge that may build up

on the audio lines. This reduces Pop & Click noise in the audio system.

The NCN1154 is housed in a space−saving, ultra low profile

2.0x1.7x0.5mm, 12 pin UQFN package.

Features

Channel

Typical Applications

www.onsemi.com

UQFN12

MU SUFFIX

CASE 523AE

MARKING

DIAGRAM

Device

Package

ORDERING INFORMATION

NCN1154MUTAG

UQFN12

(Pb−Free)

3000 / Tape & Reel

APPLICATION DIAGRAM

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

AC = Specific Device Code

M

= Date Code

G

= Pb−Free Package

ACM

G

1

NCN1154

COM+

COM−

D+

D−

Rx

Tx

R

L

IN1, IN2

From Baseband

USB/

UART

USB/

UART

USB/

UART/

Audio