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| 型号： | MAX456EQH+TD |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC VIDEO CROSSPOINT SWIT 44PLCC |
| 标准包装： | 500 |
| 功能： | 视频交叉点开关 |
| 电路： | 1 x 8:8 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-LCC（J 形引线） |
| 供应商设备封装： | 44-PLCC（16.59x16.59） |
| 包装： | 带卷 (TR) |
8 x 8 Video Crosspoint Switch
MAX456
6
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Table 1. Parallel-Interface Mode Functions
A2-A0
D3-D0
FUNCTION
0000 to 0111
Connect the buffer selected by A2-A0 to the input channel selected by D3-D0.
1000
Connect the buffer selected by A2-A0 to DGND. Note, if the buffer output is on, its output
is its offset voltage.
1011
Shut off the buffer selected by A2-A0, and retain 2nd-rank contents.
1100
Turn on the buffer selected by A2-A0, or restore the previously connected channel.
1101
Turn off all buffers, or leave 2nd-rank registers unchanged.
1110
Turn on all buffers, or restore the previously connected channels.
1111
Send a pulse to the 2nd-rank registers to load them with the contents of the 1st-rank
registers. When latch is held high, this "software-LATCH" command performs the same
function as pulsing LATCH low.
Selects
Output
Buffer,
OUT0
to
OUT7
1001 and 1010
Do not use these codes in the parallel-interface mode. These codes are for the serial-
interface mode only.
Table 2. Serial-Interface Mode Functions
D3-D0
FUNCTION
0000 to 0111
Connect the selected buffer to the input
channel selected by D3-D0.
1000
Connect the input of the selected buffer to
GND. Note, if the buffer output remains
on, its input is its offset voltage.
1001
Turn on the selected buffer and connect
its input to GND. Use this code to turn on
buffers after power is applied. The default
power-up state is all buffers disabled.
1010
Shut off the selected buffer at the speci-
fied channel, and erase data stored in the
2nd rank of registers. The 2nd rank now
holds the command word 1010.
1011 to 1111
Do not use these codes in the serial-inter-
face mode. They inhibit the latching of the
2nd-rank registers, which prevents proper
data loading.
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