Rainbow-electronics MAX4895E Bedienungsanleitung PDF herunterladen

General Description

The MAX4895E integrates level-translating buffers and

features R, G, B port protection for VGA signals.

The MAX4895E has H, V (horizontal, vertical) translat-

ing buffers that take low-level CMOS inputs from the

graphics outputs to meet full +5.0V, TTL-compatible

outputs. Each output can drive ±10mA and meet the

VESA

specification. In addition, the device takes the

+5.0V, direct digital control (DDC) signals and trans-

lates them to the lower level required by the graphics

device. This level is set by the user by connecting V

the graphics output supply. The R, G, B terminals pro-

tect the graphics output pins against electrostatic dis-

charge (ESD) events. All seven outputs have high-level

ESD protection.

The MAX4895E is specified over the extended -40°C to

+85°C temperature range, and is available in a 16-pin,

3mm x 3mm TQFN package.

Applications

Notebook Computers

Desktops

Servers

Graphics Cards

Features

♦ ESD Protection on H1, V1, SDA1, SCL1, R, G, and B

±15kV—Human Body Model

±8kV—IEC 61000-4-2, Contact Discharge

♦ Low Quiescent Current, I

≤ 5µA (max)

♦ Low 3pF (max) Capacitance (R, G, B Ports)

♦ DDC Level-Shifting Protection and Isolation

♦ Horizontal Sync, Vertical Sync Level Shifting/

Buffering

♦ Input Compatible with V

♦ Output Full +5.0V TTL Compatible (per VESA)

♦ ±10mA Drive on Each H, V Terminal

♦ Space-Saving, Lead-Free, 16-Pin (3mm x 3mm)

TQFN Package

MAX4895E

VGA Port Protector

________________________________________________________________

Maxim Integrated Products

GND

SCL1

SCL0

12 10 9

SDA1

SDA0

N.C.

*CONNECT EXPOSED PAD TO GND.

MAX4895E

GH0

TQFN

(3mm

3mm)

TOP VIEW

*EP

Pin Configuration

Ordering Information

MAX4895E

1μF

GND

+5V

1μF

+3.3V

SDA0, SCL0

H0, V0

VGA OUTPUTS VGA PORT

SDA1, SCL1

H1, V1

N.C.

Typical Operating Circuit

19-4569; Rev 0; 4/09

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

or visit Maxim’s website at www.maxim-ic.com.

PART TEMP RANGE

PIN-

PACKAGE

TOP

MARK

MAX4895EETE+ -40°C to +85°C 16 TQFN-EP* AHEEAA

Denotes a lead(Pb)-free/RoHS-compliant package.

EP = Exposed pad.

VESA is a registered trademark of Video Electronics Standards

Association Corporation.

1 2 3 4 5 6 7 8

MAX4895E 1
VGA Port Protector 1

Inhaltsverzeichnis

Seite 1 - VGA Port Protector

General DescriptionThe MAX4895E integrates level-translating buffers andfeatures R, G, B port protection for VGA signals.The MAX4895E has H, V (horizo

Seite 2

MAX4895EVGA Port Protector2 _______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL

Seite 3

MAX4895EVGA Port Protector_______________________________________________________________________________________ 3ELECTRICAL CHARACTERISTICS (continu

Seite 4

MAX4895EApplications InformationThe MAX4895E provides the level shifting necessary todrive two standard VGA ports from a graphics controlleras low as

Seite 5

MAX4895EVGA Port Protector_______________________________________________________________________________________ 5Functional DiagramMAX4895E±15kV±15k

Seite 6

MAX4895EVGA Port Protector6 _______________________________________________________________________________________Horizontal/Vertical Sync Level Shif

Seite 7

Human Body Model (HBM)Figure 1a shows the Human Body Model, and Figure1b shows the current waveform it generates when dis-charged into a low impedance

Seite 8

MAX4895EVGA Port ProtectorMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No ci

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