MAX4885EEVKIT+ Maxim Integrated Products, MAX4885EEVKIT+ Datasheet

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MAX4885EEVKIT+

Manufacturer Part Number
MAX4885EEVKIT+
Description
KIT EVALUATION FOR MAX4885E
Manufacturer
Maxim Integrated Products
Datasheets
1.MAX4885ETJ.pdf (13 pages)
2.MAX4885EETGT.pdf (10 pages)
3.MAX4885EEVKIT.pdf (8 pages)

Specifications of MAX4885EEVKIT+

Main Purpose
Video, Video Multiplexer
Embedded
No
Utilized Ic / Part
MAX4885E
Primary Attributes
1:2 VGA Switch
Secondary Attributes
Status LEDs
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX4885 integrates high-bandwidth analog
switches and level-translating buffers to implement a
complete 1:2 or 2:1 multiplexer for VGA signals. The
device provides switching for RGB, display data chan-
nel (DDC), and horizontal and vertical synchronization
(HSYNC, VSYNC) signals. A low-noise charge pump
with internal capacitors provides a boosted gate-drive
voltage to improve performance of the RGB switches.
In the 1:2 multiplexer mode, HSYNC/VSYNC inputs fea-
ture level-shifting buffers to support low-voltage CMOS
or standard TTL-compatible graphics controllers. In the
2:1 multiplexer mode, the output buffers for the
HSYNC/VSYNC inputs are disabled, allowing bidirec-
tional signaling. In both modes, DDC signals are volt-
age-clamped to an external voltage to provide level
translation and protection. The MAX4885 features a
5µA shutdown mode and is ESD protected to ±8kV
Human Body Model (HBM) on externally routed pins.
The MAX4885 is specified over the extended (-40°C to
+85°C) temperature range, and is available in the 32-
pin, 5mm x 5mm TQFN package.
19-0554; Rev 0; 5/06
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.
TOP VIEW
Notebook Computers
Digital Projectors
Computer Monitors
Servers
KVM Switches
DDCB1
DDCA1
GND
SEL
G1
R1
V+
M
*EXPOSED PADDLE CONNECTED TO GND
25
26
27
28
29
30
31
32
24
1
________________________________________________________________ Maxim Integrated Products
23
2
*EP
22
3
General Description
MAX4885
TQFN
21
4
Complete VGA 1:2 or 2:1 Multiplexer
Pin Configuration
20
5
19
6
18
Applications
7
17
8
16 G2
15 R2
14
13
12
11
10
9
DDCB2
DDCA2
GND
V+
V
EN
CL
♦ +5V Single-Supply Operation
♦ Programmable Voltage Clamp for Open-Drain
♦ Low 5Ω (typ) On-Resistance (R, G, B Signals)
♦ Low 13pF (typ) On-Capacitance (R, G, B Signals)
♦ Break-Before-Make Switching Protects Against
♦ ±8kV HBM ESD Protection on Externally Routed
♦ Low 300µA Supply Current (Lower than 1µA with
♦ Space-Saving, Lead-Free, 32-Pin (5mm x 5mm)
*EP = Exposed pad.
+Denotes lead-free package.
MAX4885ETJ+ -40°C to +85°C 32 TQFN-EP*
DOCKING
STATION
CONTROLLER
DDC Signals
Circuit Shorts
Pins
Charge Pump Disabled)
TQFN Package
GRAPHICS
+3.3V
PART
0.1μF
3
2
2
Typical Operating Circuit
TEMP RANGE PIN-PACKAGE
H0, V0
DDCA0, DDCB0
SEL
EN
R0, B0, G0
M
Ordering Information
V
CL
MAX4885
GND
DDCA2, DDCB2
DDCA1, DDCB1
+5V
V+
R2, G2, B2
R1, G1, B1
H2, V2
H1, V1
Features
3
2
3
2
2
2
0.1μF
T3255-4
CODE
PKG
PORT 1
PORT 2
VGA
VGA
1

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MAX4885EEVKIT+ Summary of contents

Page 1

... TQFN *EXPOSED PADDLE CONNECTED TO GND ________________________________________________________________ Maxim Integrated Products 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. ♦ +5V Single-Supply Operation ♦ Programmable Voltage Clamp for Open-Drain DDC Signals ♦ Low 5Ω (typ) On-Resistance ( Signals) ♦ ...

Page 2

Complete VGA 1:2 or 2:1 Multiplexer ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND .....................................................................-0. R_, G_, B_, DDCA_, DDCB_, SEL, M, EN, QP (Note 1) ...........................................-0. 0.3V H_, V_ ...

Page 3

Complete VGA 1:2 or 2:1 Multiplexer ELECTRICAL CHARACTERISTICS (continued) (V+ = +5.0V ±10 +3.3V ±10 +3.3V and T = +25°C PARAMETER SYMBOL DDC MULTIPLEXER On-Resistance R DDC Leakage Charge Injection SWITCH LOGIC ...

Page 4

Complete VGA 1:2 or 2:1 Multiplexer TIMING CHARACTERISTICS (V+ = +5.0V ±10 +3.3V ±10 +25°C, unless otherwise noted.) (Note 2) PARAMETER SYMBOL Charge-Pump Startup Time t QPON RGB ANALOG SWITCHES Turn-On Time Turn-Off Time t Propagation ...

Page 5

Complete VGA 1:2 or 2:1 Multiplexer (V+ = +5.0V +3.3V and T = +25°C, unless otherwise noted vs DDAC0 (DDC SWITCHES +3. +5. ...

Page 6

Complete VGA 1:2 or 2:1 Multiplexer (V+ = +5.0V +3.3V and T = +25°C, unless otherwise noted vs. TEMPERATURE ON (HV, DDC SWITCHES) 3.0 2.5 2.0 1.5 1.0 0.5 0 -40 - ...

Page 7

Complete VGA 1:2 or 2:1 Multiplexer MAX4885 R1, G1, B1 R0, G0 R2, G2, B2 SEL GND LOGIC INPUT C INCLUDES FIXTURE AND STRAY CAPACITANCE OUT ...

Page 8

Complete VGA 1:2 or 2:1 Multiplexer +5V 10nF SEL R0, G0, B0 MAX4885 R1, G1, B1 R2, G2, B2 50Ω GND MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN R0 AND R1 ...

Page 9

Complete VGA 1:2 or 2:1 Multiplexer PIN NAME 18 H2 Horizontal Sync I Vertical Sync I Vertical Sync I Horizontal Sync I RGB Analog I RGB Analog I ...

Page 10

Complete VGA 1:2 or 2:1 Multiplexer standard VGA signals. The charge pump can be dis- abled to eliminate charge-pump noise; however, RGB switch performance is slightly degraded. Connect QP to ground for normal operation. Horizontal/Vertical Sync Multiplexer 1:2 Multiplexer Mode ...

Page 11

Complete VGA 1:2 or 2:1 Multiplexer 1MΩ 1500Ω DISCHARGE CHARGE-CURRENT- RESISTANCE LIMIT RESISTOR HIGH STORAGE VOLTAGE 100pF CAPACITOR DC SOURCE Figure 5. Human Body ESD Test Model In 2:1 mode, HSYNC and VSYNC buffers ...

Page 12

Complete VGA 1:2 or 2:1 Multiplexer SEL DDCA0 DDCB0 ______________________________________________________________________________________ Functional Diagram MAX4885 RGB CHARGE PUMP G2 B2 DDCA1 ...

Page 13

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2006 Maxim Integrated Products ...

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