Rainbow-electronics MAX3345E Manual de usuario descargar pdf

General Description

The MAX3344E/MAX3345E USB transceivers convert

logic-level signals to USB signals, and USB signals to

logic-level signals. An internal 1.5kΩ USB pullup resistor

supports full-speed (12Mbps) USB operation. The

MAX3344E/MAX3345E provide built-in ±15kV ESD-pro-

tection circuitry on the USB I/O pins, D+ and D-, and V

The MAX3344E/MAX3345E operate with logic supply

voltages as low as 1.65V, ensuring compatibility with

low-voltage ASICs. The suspend mode lowers supply

current to less than 40µA. An enumerate function allows

devices to logically disconnect while plugged in. The

MAX3344E/MAX3345E are fully compliant with USB

specification 1.1, and full-speed operation under USB

specification 2.0.

The MAX3344E/MAX3345E have a USB detect that mon-

itors the USB bus for insertion and signals this event. The

MAX3344E USB_DET threshold is between 3.6V (min)

and 4V (max), while the MAX3345E USB_DET threshold

is between 1V (min) and 2.8V (max).

The MAX3344E/MAX3345E are available in the miniature

4 UCSP™, as well as the small 16-pin TSSOP, and

are specified over the extended temperature range,

-40°C to +85°C.

Applications

Cell Phones

PC Peripherals

Information Appliances

Data Cradles

PDAs

MP3 Players

Digital Cameras

Features

♦ ±15kV ESD Protection On D+ and D-

♦ Comply with USB Specification 1.1 (Full Speed 2.0)

♦ Separate VP and VM Inputs/Outputs

♦ V

Down to 1.65V Allows Connection with Low-

Voltage ASICs

♦ Enumerate Input—Allows USB Connection

through Software

♦ USB Detect Function

3.6V (min) to 4V (max)—MAX3344E

1V (min) to 2.8V (max)—MAX3345E

♦ Allow Single-Ended or Differential Logic I/O

♦ Internal Linear Regulator Allows Direct Powering

from the USB

♦ Internal Pullup Resistor for Full-Speed Operation

♦ Three-State Outputs

♦ No Power-Supply Sequencing Required

♦ Driver Active in Suspend Mode

♦ Available in Miniature Chip-Scale Package

MAX3344E/MAX3345E

±15kV ESD-Protected USB Transceivers

in UCSP with USB Detect

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-3171; Rev 0; 2/04

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

PART

TEMP RANGE

PIN-PACKAGE

MAX3344EEUE

-40°C to +85°C

16 TSSOP

MAX3344EEBE-T

-40°C to +85°C

4 x 4 UCSP

MAX3345EEUE

-40°C to +85°C

16 TSSOP

MAX3345EEBE-T

-40°C to +85°C

4 x 4 UCSP

Pin Configurations appear at end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

USB

INTERFACE

CONNECTOR

RCV

VPI

VMI

SUSP

D+

D-

BUS

D+

D-

GND

SYSTEM

SUPPLY

VOLTAGE

USB_DET

MODE

VTRM

ENUM

VPO

VMO

SYSTEM INTERFACE

23.7Ω

MAX3344E/

MAX3345E

GND

0.1µF

1µF

Typical Operating Circuit

1 2 3 4 5 6 ... 14 15

MAX3344E/MAX3345E 1

Indice de contenidos

Pagina 1 - MAX3344E/MAX3345E

General DescriptionThe MAX3344E/MAX3345E USB transceivers convertlogic-level signals to USB signals, and USB signals tologic-level signals. An interna

Pagina 2

MAX3344E/MAX3345E±15kV ESD-Protected USB Transceiversin UCSP with USB Detect10 _______________________________________________________________________

Pagina 3

IEC 1000-4-2The IEC 1000-4-2 standard covers ESD testing and per-formance of finished equipment; it does not specificallyrefer to integrated circuits.

Pagina 4

MAX3344E/MAX3345E±15kV ESD-Protected USB Transceiversin UCSP with USB Detect12 _______________________________________________________________________

Pagina 5

MAX3344E/MAX3345E±15kV ESD-Protected USB Transceiversin UCSP with USB Detect__________________________________________________________________________

Pagina 6

MAX3344E/MAX3345E±15kV ESD-Protected USB Transceiversin UCSP with USB Detect14 _______________________________________________________________________

Pagina 7

MAX3344E/MAX3345E±15kV ESD-Protected USB Transceiversin UCSP with USB DetectMaxim cannot assume responsibility for use of any circuitry other than cir

Pagina 8

MAX3344E/MAX3345E±15kV ESD-Protected USB Transceiversin UCSP with USB Detect2 ________________________________________________________________________

Pagina 9

MAX3344E/MAX3345E±15kV ESD-Protected USB Transceiversin UCSP with USB Detect__________________________________________________________________________

Pagina 10

Typical Operating Characteristics(VCC= 5V, VL= 3.3V, TA = +25°C, unless otherwise noted.)MAX3344E/MAX3345E±15kV ESD-Protected USB Transceiversin UCSP

Pagina 11

MAX3344E/MAX3345E±15kV ESD-Protected USB Transceiversin UCSP with USB Detect__________________________________________________________________________

Pagina 12

MAX3344E/MAX3345EDetailed DescriptionThe MAX3344E/MAX3345E are bidirectional transceiversthat convert single-ended or differential logic-level signals

Pagina 13

Power-Supply ConfigurationsNormal Operating ModeConnect VLand VCCto system power supplies (Table1). Connect VLto a +1.65V to +3.6V supply. ConnectVCCt

Pagina 14

MAX3344E/MAX3345E±15kV ESD-Protected USB Transceiversin UCSP with USB Detect8 ________________________________________________________________________

Pagina 15

MAX3344E/MAX3345E±15kV ESD-Protected USB Transceiversin UCSP with USB Detect__________________________________________________________________________

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