MAX14508E(2008) Ver la hoja de datos (PDF) - Maxim Integrated

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componentes Descripción

Fabricante

MAX14508E
(Rev.:2008)

USB 2.0 Hi-Speed and Audio Switches with Negative Signal Capability

Maxim Integrated 

USB 2.0 Hi-Speed and Audio Switches

with Negative Signal Capability

Typical Operating Characteristics (continued)

(VCC = 3.0V, TA = +25°C, unless otherwise noted.)

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

10

RL = 600Ω

0.1

0.01

0.001

0.0001

0.01

0.1

1

10

100

FREQUENCY (MHz)

10

0

-10

-20

-30

-40

-50

-60

-70

-80

1

FREQUENCY RESPONSE

ANO_ ON-LOSS UNC_ ON-LOSS

OFF-ISOLATION

CROSSTALK

10

100

1,000

FREQUENCY (MHz)

EYE DIAGRAM

MAX14508E-11E/9AE toc12

USB 2.0

HI-SPEED

TRANSMIT

TEMPLATE

Pin Description

PIN

MAX14508E/

MAX14509E/ MAX14510E/

MAX14509AE MAX14511E

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

—

9

—

10

10

—

8

—

9

NAME

FUNCTION

UNC1

ANO2

ANO1

GND

VCC

COM1

COM2

CB

EN

UNC2

AOR

VB

USB Input 1. Normally closed terminal for switch 1.

Audio Input 2. Normally open terminal for switch 2.

Audio Input 1. Normally open terminal for switch 1.

Ground

Positive Supply-Voltage Input. Bypass VCC to GND with a 0.1µF capacitor as close to

the device as possible.

Common Terminal for Switch 1

Common Terminal for Switch 2

Digital Control Input. Drive CB low to connect COM_ to UNC_. Drive CB high to

connect COM_ to ANO_.

Active-High Enable Input. Drive EN high for normal operation. Drive EN low to put

switches in high impedance. Do not connect negative signals to ANO_ or COM_ when

EN is low.

USB Input 2. Normally closed terminal for switch 2.

Audio Override Input. Drive AOR low to have VB control the switch. Drive AOR high to

connect COM_ to ANO_. AOR has an internal pulldown resistor to GND.

VBUS Detection Input. If VVB ≥ VVBDET, COM_ connects to UNC_. Otherwise, COM_

connects to ANO_.

10 ______________________________________________________________________________________

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