General Description

The MAX4885E integrates high-bandwidth analog

switches and level-translating buffers to implement a

complete 1:2 multiplexer for VGA signals. The device

provides switching for RGB, display data channel (DDC).

Horizontal and vertical synchronization (HSYNC/VSYNC)

inputs feature level-shifting buffers to support low-volt-

age CMOS or standard TTL-compatible graphics con-

trollers, meeting the VESA requirement of ±8mA. DDC,

consisting of SDA_ and SCL_, is a bidirectional active-

level translating switch that reduces capacitive load. The

MAX4885E features high ESD protection to ±15kV

Human Body Model (HBM) on all twelve externally rout-

ed terminals. See the

Pin Description section. All other

pins are protected to ±10kV Human Body Model (HBM).

The MAX4885E is specified over the extended -40°C to

+85°C temperature range, and is available in the

24-pin, 4mm x 4mm TQFN package.

Applications

Notebook Computers/Docking Stations

Digital Projectors

Computer Monitors

Servers/Storage

KVM Switches

Features

♦ ±15kV HBM ESD Protection on Externally Routed

Terminals

♦ 1GHz Bandwidth

♦ Low 5Ω (typ) On-Resistance (R, G, B Signals)

♦ Low 6pF (typ) On-Capacitance (R, G, B Signals)

♦ Low R, G, B Skew -50ps (typ)

♦ Near Zero Power Consumption (< 2µA)

♦ Ultra-Small, 24-Pin (4mm x 4mm) TQFN Package

Ultra-Low Capacitance 1:2 VGA

Switch with ±15kV ESD

________________________________________________________________

Maxim Integrated Products

1

19-4269; Rev 0; 10/08

EVALUATION

KIT

AVAILABLE

TQFN-EP

MAX4885E

19

20

21

22

12

3

45

6

18

17

16

15

14

13

23

24

12

11

10

9

8

7

SCL2

SDA2

SCL1

SDA1

SEL

EN

V1

GND

H1

V0

TOP VIEW

+

*EXPOSED PAD. CONNECTED TO GROUND OR LEAVE UNCONNECTED.

*EP

Pin Configuration

Ordering Information

GRAPHICS

CONTROLLER

DOCKING

STATION

VGA

PORT

GND

+3.3V

EN

R0, B0, G0

H0, V0

SDA0, SCL0

R2, G2, B2

SDA2, SCL2

R1, G1, B1

SDA1, SCL1

H1, V1

3

2

2

3

2

2

2

3

2

SEL

DOCKING

STATION

+5.0V

+3.3V

0.1

µF

0.1

µF

MAX4885E

Typical Operating Circuit

PART

TEMP RANGE

PIN-PACKAGE

MAX4885EETG+

-40°C to +85°C

24 TQFN-EP*

*

EP = Exposed pad.

+

Denotes lead-free package/RoHS-compliant package.

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.