MAX14585 Datasheet, PDF(1/12 Page) Maxim Integrated Products – Hi-Speed USB and Audio Switches with Negative Signal Capability and High-Voltage-Tolerable

19-5878; Rev 0; 5/11

EVALUATION KIT AVAILABLE

MAX14585/MAX14585A

Hi-Speed USB and Audio Switches with Negative Signal

Capability and High-Voltage-Tolerable VBUS Detection

General Description

Benefits and Features

The MAX14585/MAX14585A high-ESD-protected double-

pole/double-throw (DPDT) switches multiplex Hi-Speed

(480Mbps) USB and analog signals such as AC-coupled

audio or video. These devices combine the low on-

capacitance (CON) and low on-resistance (RON) neces-

sary for high-performance switching applications in por-

table electronics and include an internal negative supply

to pass audio signals that swing below ground down to

-1.8V. The devices also handle USB low-/full-speed sig-

naling and operate from a 2.7V to 5.5V supply.

The devices feature a VBUS detection input (VB) that can

handle voltage up to 28V to automatically switch to the

USB signal path upon detection of a valid VBUS signal (VB

> VVBDET). In a dead battery situation, the voltage on VB

can supply power to the part if VB is greater than 4.5V. The

MAX14585 features internal shunt resistors on the audio

path to reduce clicks and pops heard at the output.

The MAX14585/MAX14585A are available in a space-

saving, 10-pin, 1.4mm x 1.8mm UTQFN package and

operate over the -40NC to +85NC temperature range.

Applications

Cell Phones

PDAs and Handheld Devices

Tablet PCs

S Low Power Consumption

ï² Low Supply Current 7ÂµA (typ)

ï² Single 2.7V to 5.5V Supply Operation, VCC

S Flexible Design

ï² Dual Power-Supply Architecture, VB and VCC

ï² ANO_ Channel Override Control Input

S High Level of Integration for Performance

ï² 28V-Capable VB Input with Automatic UNC_

Selection by VBUS Detection

ï² Low-Capacitance Hi-Speed USB for Both

Channels (UNC_ and ANO_)

ï² Distortion-Free Negative Signal Throughput

Down to -1.8V on ANO_ Channel

ï² 3I (typ) On-Resistance

ï² 960MHz Bandwidth

ï² 0.04% THD+N Audio Channel

ï² Â±15kV Human Body Model (HBM) ESD on

COM1, COM2

S Saves Board Space

ï² Internal Shunt Resistor Reduces Clicks and

Pops (MAX14585)

ï² 10-Pin, 1.4mm x 1.8mm UTQFN Package

Ordering Information appears at end of data sheet.

For related parts and recommended products to use with this part,

refer to www.maxim-ic.com/MAX14585.related.

Typical Operating Circuit

HI-SPEED

USB

TRANSCEIVER

UNC1

UNC2

3.0V 0.1ÂµF

VCC

MAX14585/MAX14585A

VCCINT

AN01

AUDIO

AMPLIFIER

AN02

COM1

COM2

COMBINATION

USB AND AUDIO

CONNECTOR

MAX14585

ONLY

VVBDET

VBUS

GND

AOR

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maximâs website at www.maxim-ic.com.

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