MAX9539 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – Graphics Video Sync Adder/Extractor

19-0602; Rev 2; 1/07
EVAALVUAAILTAIOBNLEKIT
Graphics Video Sync Adder/Extractor
General Description
The MAX9539/MAX9540 chipset provides a 3-wire
(RGB) interface for 5-wire (RGBHV) video by adding
and extracting the H, V, and composite sync from the
graphics video signals. This chipset eliminates the
problem of sync-to-video timing (skew errors) in a 5-
wire interface, while reducing the number of channels
required to transport video signals.
The MAX9539 mixes the H and V sync signals and
adds them to create a 3-wire interface from a 5-wire
(RGBHV) input. The MAX9540 recovers the H and V
sync signals to create a 5-wire (RGBHV) interface from
the 3-wire input. The MAX9540 also provides a com-
posite sync output.
The chipset includes the MAX9539 sync adder and the
MAX9540 sync extractor with 180MHz large-signal
bandwidths to address display resolutions up to 1600 x
1200 at 85Hz for VGA-to-UXGA applications. Both
devices feature a DC restore function, which virtually
eliminates any changes in black level. The chipset uses
a proprietary H and V sync addition/extraction scheme
(true sync) to minimize skew errors.
The MAX9539/MAX9540 are available in 28-pin TSSOP
packages and are specified over the extended -40°C to
+85°C temperature range.
Applications
Enterprise Class (Blade) Servers
Laptop PCs
Web Appliances
Keyboard-Video-Mouse (KVM)
Features
o 3-Wire RBG to 5-Wire RBGHV Interface
o Supports VGA-to-UXGA Resolution
o Low Offset Voltage (±1mV)
o 180MHz Large-Signal Bandwidth
Ordering Information
PART
PIN-
PACKAGE
PKG
CODE
DESCRIPTION
MAX9539EUI+* 28 TSSOP
U28-3
Sync Adder
MAX9539EUI
28 TSSOP
U28-3
Sync Adder
MAX9540EUI+* 28 TSSOP
U28-3 Sync Extractor
MAX9540EUI
28 TSSOP
U28-3 Sync Extractor
Note: All devices are specified over the -40°C to +85°C oper-
ating temperature range.
+Denotes lead-free package.
*Future product—contact factory for availability.
Pin Configurations appear at end of data sheet.
Chipset Diagram
H
V
MAX9539
R
R
G
G
B
B
H
V
R
MAX9540
C
G
R
B
G
B
________________________________________________________________ Maxim Integrated Products 1
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.