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参数资料
| 型号： | MAX7456EUI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 37/44页 |
| 文件大小： | 0K |
| 描述： | IC DISPLAY 1CH W/EEPROM 28TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | OSD（屏幕显示）视频发生器 |
| 应用： | 安全系统，视频路由 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 28-TSSOP 裸露焊盘 |
| 包装： | 带卷 (TR) |
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Single-Channel Monochrome On-Screen
Display with Integrated EEPROM
Multiple OSDs with
Common Clock Application
The MAX7456 provides a TTL clock output (CLKOUT)
capable of driving one CLKIN pin of another MAX7456.
Two or more MAX7456 parts can be driven using an
external clock driver. This arrangement reduces the
system cost by having only one crystal on one
MAX7456 that supplies the clock signal to multiple
MAX7456 parts (Figure 25).
Selecting a Clock Crystal
Choose a 27MHz parallel resonant, fundamental mode
crystal. No external load capacitors are needed. All
capacitors required for the Pierce oscillator are includ-
ed on-chip.
Power Supply and Bypassing
The MAX7456 operates from three independent supply
lines. Each supply must be within a +4.75V to +5.25V
voltage range. Separate the digital power supply from
the analog and video-driver supply lines to prevent
high-frequency digital noise that may couple onto the
video output. All three supplies should be at the same
DC voltage. Bypass each supply with a 0.1F capacitor
to ground very close to the IC pins. There are no
power-supply sequencing requirements for the device.
Layout Concerns
For best performance, make the VIN and VOUT traces
as short as possible. Place all AC-coupling capacitors
and 75
Ω termination resistors close to the device with
the resistors terminated to the solid analog ground
plane. Since the MAX7456 TSSOP package has an
exposed pad (EP) underneath, do not run traces under
the package to avoid possible short circuits. Refer to
the MAX7456 EV kit for an example of PCB layout.
To aid heat dissipation, the EP should be connected to
a similarly sized pad on the component side of the
PCB. This pad should be connected through to the sol-
der-side copper by several plated holes to conduct
heat away from the device. The solder-side copper pad
area should be larger than the EP area. It is recom-
mended that the EP be connected to ground, but it is
not required. Do not use EP as the only ground connec-
tion for the device.
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2
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14
N.C.
VOUT
SAG
PVDD
PGND
N.C.
VIN
AVDD
AGND
RESET
HSYNC
VSYNC
N.C.
LOS
SDOUT
SCLK
SDIN
CS
CLKOUT
XFB
CLKIN
DGND
DVDD
N.C.
TSSOP
TOP VIEW
MAX7456
+
Pin Configuration
Chip Information
PROCESS: BiCMOS
MAX7456
42
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX7456EVKIT | 功能描述:显示开发工具 RoHS:否 制造商:4D Systems 产品:4Display Shields 工具用于评估:?OLED-160-G1, ?OLED-160-G2 接口类型:Serial 工作电源电压:5 V |
| MAX7456EVKIT+ | 功能描述:显示开发工具 MAX7456 Eval Kit RoHS:否 制造商:4D Systems 产品:4Display Shields 工具用于评估:?OLED-160-G1, ?OLED-160-G2 接口类型:Serial 工作电源电压:5 V |
| MAX7457ETE | 功能描述:视频开关 IC RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| MAX7457ETE+ | 功能描述:视频开关 IC Video Switch for Dual SCART Connector RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| MAX7457ETE+T | 功能描述:视频开关 IC Video Switch for Dual SCART Connector RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
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