參數(shù)資料
型號(hào)： MAX4455ECQ
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 畫面疊加
英文描述： Triple Differential Transceivers 20-SOIC -40 to 85
中文描述： ON-SCREEN DISPLAY IC, PQFP100
封裝： 14 X 14 MM, 1 MM HEIGHT, TQFP-100
文件頁數(shù)： 1/30頁
文件大?。?/td> 663K
代理商： MAX4455ECQ
General Description
The MAX4455 is an eight-channel arbitrary graphics
on-screen display (OSD) video generator that inserts
arbitrary gray-scale bit-mapped graphics into eight
asynchronous composite video sources. Ideal for secu-
rity camera surveillance systems, the MAX4455 sup-
ports the insertion of graphics and text on up to eight
video output channels in 15 levels of brightness. It easi-
ly displays information such as company logo, camera
location, time, and date with arbitrary fonts and sizes.
Arbitrary graphics capability enables the display of
unique languages and fonts, allowing manufacturers to
tailor their system for any geographic market. The
MAX4455 is designed to work with Maxim’s video
crosspoint switches, such as the MAX4356 and
MAX4358, which include circuitry that simplifies the
insertion of the OSD information. The MAX4455 can
also be used with discrete fast mux switches.
The MAX4455 operates from a 3V to 3.6V digital sup-
ply, and a 2.7V to 5.5V analog supply. Independent
interface supplies enable the MAX4455 to communi-
cate with microprocessors and OSD crosspoint switch
logic with logic levels ranging from 2.7V to 5.5V. The
MAX4455 uses an external 16Mb SDRAM for graphical
image storage for all eight video channels. The
MAX4455 manages all memory interface functions,
allowing a simple host μP interface. The MAX4455’s
multiple-channel memory sharing and multiple-location
write function allow fast memory updates of shared
graphics information necessary for rapidly changing
OSD information, such as a time stamp.
The MAX4455 is available in a thin 100-pin TQFP pack-
age (200mm
2
area), and is fully specified over the
extended temperature range (-40
°
C to +85
°
C). The
MAX4455EVSYS is available to evaluate the MAX4455
along with the MAX4358 (32
×
16 video crosspoint
switch with OSD).
Applications
Security Systems
Video Routing
Industrial Applications
Features
o
Generates Arbitrary Graphics Images
o
15-Level Gray Scale
o
8 Channels of Bit-Mapped OSD
o
Loss-of-Signal Detector for All Channels
o
Graphics Updatable Within the Vertical Interval
o
Update Time Stamp on All Eight Channels
Simultaneously
o
3V and 5V Single-Supply Operation
o
Works with MAX4356/MAX4358 Video Crosspoint
Devices and Fast Mux Switches
o
Small 100-Pin TQFP Package (200mm
2
)
M
Arbitrary Graphics On-Screen Display
Video Generator
________________________________________________________________
Maxim Integrated Products
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.
1
VIDIN0
OSDFILL0
4-BIT D/A
OSDFILL1
OSDFILL7
OSDKEY0
OSDKEY1
OSDKEY7
OSDFILL2
OSDKEY2
VIDEO TIMING
EXTRACTION
DIGITAL LINE
BUFFERS
4-BIT D/A
4-BIT D/A
4 BIT D/A
MEMORY
INTERFACE
16
OSD
CONTROL
AND TIMING
XTAL1/SYNC
11
MEMORY
ADDRESS
BUS
MEMORY
DATA
BUS
CK
BA
VIDIN1
VIDIN2
VIDIN7
INTCPU
CDAC
REF
RSET
8
AD7–AD0
ADDR/DATA
RDY/BSY
RD
WR
CS
V
H1
V
K1
WE
CAS
DQ RAS
XTAL2
AGND
AV
DD
DGND
DV
DD
MAX4455
VIDEO TIMING
EXTRACTION
EXTRACTION
VIDEO TIMING
EXTRACTION
DIGITAL LINE
BUFFERS
DIGITAL LINE
BUFFERS
DIGITAL LINE
BUFFERS
Ordering Information
19-2463; Rev 2; 3/03
EVALUATION KIT
AVAILABLE
PART
TEMP RANGE
-40
°
C to +85
°
C
PIN-PACKAGE
100 TQFP
MAX4455ECQ
Pin Configuration appears at end of data sheet.
Functional Diagram
相關(guān)PDF資料
PDF描述
MAX445CPG Triple Differential Transceivers 20-SSOP -40 to 85
MAX4504EPA Low-Voltage, Dual-Supply, SPST, CMOS Analog Switches
MAX4504ESA Low-Voltage, Dual-Supply, SPST, CMOS Analog Switches
MAX4504EUK Low-Voltage, Dual-Supply, SPST, CMOS Analog Switches
MAX4503 Low-Voltage, Dual-Supply, SPST, CMOS Analog Switches
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX4455ECQ+D 功能描述:視頻開關(guān) IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時(shí)間: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel
MAX4455ECQ+TD 功能描述:視頻開關(guān) IC Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時(shí)間: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel
MAX4455ECQ-T 功能描述:視頻開關(guān) IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時(shí)間: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel
MAX4455EVKIT 制造商:Maxim Integrated Products 功能描述:ARBITRARY GRAPHICS ON-SCREEN DISPLAY VIDEO GE - Bulk
MAX4455EVSYS 制造商:Maxim Integrated Products 功能描述:ARBITRARY GRAPHICS ON-SCREEN DISPLAY VIDEO GE - Bulk 制造商:Rochester Electronics LLC 功能描述:
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