1

USB 2.0 High-Speed x 2 Channels/Stereo Audio

Dual SP3T (Dual 3 to 1 Multiplexer)

ISL54214

The Intersil ISL54214 is a single supply dual SP3T

analog switch that operates from a single supply in the

range of 2.7V to 4.6V. It was designed to multiplex

between audio stereo signals and two different USB 2.0

high speed differential data signals. The audio channels

allow signal swings below ground, allowing the

multiplexing of the voice and data signals through a

common headphone connector in Personal Media

Players and other portable battery powered devices.

The audio switch cells can pass ±1V ground referenced

audio signals with very low distortion (<0.03% THD+N

when driving 5mW into 32Ω loads). The USB switch

cells have very low ON capacitance (8pF) and high

bandwidth to pass USB high speed signals (480Mbps)

with minimal edge and phase distortion.

The ISL54214 is available in a tiny 12 Ld

2.2mmx1.4mm ultra-thin QFN and 12 Ld 3mmx3mm

TQFN packages. It operates over a temperature range

of -40 to +85°C.

Related Literature

• Technical Brief TB363 “Guidelines for Handling and

Processing Moisture Sensitive Surface Mount Devices

(SMDs)”

Features

• High Speed (480Mbps) and Full Speed (12Mbps)

Signaling Capability per USB 2.0

• Low Distortion Negative Signal Capability Audio

Switches

• Power OFF Protection

• COM Pins Overvoltage Tolerant to 5.5V

• Low Distortion Headphone Audio Signals

-THD+N at 5mW into 32Ω Load . . . . . . . . <0.03%

• Cross-talk (100kHz) . . . . . . . . . . . . . . . . . . -98dB

• OFF-Isolation (100kHz) . . . . . . . . . . . . . . . 95.5dB

• -3dB Bandwidth USB Switches. . . . . . . . . . . 700MHz

• Available in Tiny 12 Ld µTQFN and TQFN Packages

• Compliant with USB 2.0 Short Circuit Requirements

Without Additional External Components

• Pb-Free (RoHS Compliant)

Applications

• MP3 and other Personal Media Players

• Cellular/Mobile Phone

Application Block Diagram

ISL54214

USB

TRANSCEIVER

HIGH-SPEED

AUDIO

COM -

COM +

C1

GND

1D+

1D-

R

L

C0

LOGIC CONTROL

µCONTROLLER

CODEC

3.3V

2D-

USB

4MΩ

50kΩ

HIGH-SPEED

TRANSCEIVER

2D+

50kΩ

1kΩ

1kΩ

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

Copyright Intersil Americas Inc. 2008-2010. All Rights Reserved

All other trademarks mentioned are the property of their respective owners.

June 28, 2010

FN6816.3