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参数资料
| 型号： | DG884AM883 |
| 厂商： | Vishay Intertechnology,Inc. |
| 英文描述： | 8 x 4 Wideband Video Crosspoint Array |
| 中文描述： | 8 × 4交叉点阵列宽带视频 |
| 文件页数： | 13/14页 |
| 文件大小： | 166K |
| 代理商： | DG884AM883 |
DG884
Vishay Siliconix
Document Number: 70071
S-52433—Rev. G, 20-Dec-04
www.vishay.com
13
APPLICATIONS
A typical switching threshold versus V
L
is shown in Figure 15.
These devices feature an address readback facility whereby
the last address written to the device may be read by the
system. This allows improved status monitoring and hand
shaking without additional external components.
When the I/O assigns the address output condition, the A
X
address pins can sink or source current for logic low and high,
respectively. Note that V
L
is the logic high output condition.
This point must be respected if V
L
is varied for input logic
threshold shifting.
Note: Even though these devices are designed to be latchup
resistant, V
L
must not exceed V+ by more than 0.3 V in
operation or during power supply on/off sequencing.
Layout
The PLCC package pinout is optimized so that large
crosspoint arrays can be easily implemented with a minimum
number of PCB layers (see Figure 16). Crosstalk is minimized
and off-isolation is optimized by having ground pins located
adjacent to each input and output signal pins. Optimum
off-isolation and low crosstalk performance can only be
achieved by the proper use of RF layout techniques: avoid
sockets, use ground planes, avoid ground loops, bypass the
power supplies with high frequency type capacitors (low ESR,
low ESL), use striplines to maintain transmission line
impedance matching.
Video
In Bus
Video
In Bus
Video
In Bus
Video
In Bus
Video
Out Bus
Video
Out Bus
Video
Out Bus
Video
Out Bus
A
A
FIGURE 16.
16 X 8 Expandable Crosspoint Matrix Using DG884
相关PDF资料 |
PDF描述 |
|---|---|
| DG884 | 8 x 4 Wideband Video Crosspoint Array(8 x 4宽带视频交叉开关) |
| DG894 | Component Video Selector(用于视频信号转换的视频选择器) |
| DG894 | Component Video Selector |
| DG9051 | Precision 8-Ch/Dual 4-Ch/Triple 2-Ch Low Voltage Analog Switches/Multiplexers |
| DG9051DQ-T1-E3 | Precision 8-Ch/Dual 4-Ch/Triple 2-Ch Low Voltage Analog Switches/Multiplexers |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DG884AP | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Cross-Point Switch |
| DG884DJ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Cross-Point Switch |
| DG884DN | 功能描述:视频开关 IC 8x4 Video Crosspoint 18 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 |
| DG884DN-E3 | 功能描述:多路器开关 IC 8x4 Wideband Video Multiplexer/MUX RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| DG894 | 制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:Component Video Selector |
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