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参数资料
| 型号： | LCDA24C-1.TCT |
| 厂商： | Semtech |
| 文件页数： | 4/6页 |
| 文件大小： | 0K |
| 描述： | IC TVS ARRAY BI-DIR 24V SOT-143 |
| 标准包装： | 1 |
| 电压 - 反向隔离（标准值）： | 24V |
| 电压 - 击穿： | 26.7V |
| 功率（瓦特）： | 500W |
| 电极标记： | 2 通道阵列 - 双向 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-253-4，TO-253AA |
| 供应商设备封装： | SOT-143 |
| 包装： | 标准包装 |
| 产品目录页面： | 1356 (CN2011-ZH PDF) |
| 其它名称： | LCDA24C-1DKR |
LCDA24C-1
PROTECTION PRODUCTS
Applications Information
Device Connection for Metallic Protection of High-
Speed Data Lines
The LCDA24C-1 is designed to protect high-speed data
Line
In
1
4
Line
Out
lines from transient over-voltages which result from
lightning and ESD. The device is designed to protect
one line in common mode (Line-to-Ground) or one line
pair in metallic (Line-to-Line) mode. For metallic mode
protection, the input of line 1 is connected at pin 1 and
Line
In
2
3
Line
Out
the output is connected at pin 4. Likewise, the input
of line 2 is connected at pin 2 and the output is con-
nected at pin 3. For common mode protection, ground
either pins 1 and 4 or pins 2 and 3. The ground
connection should be made directly to the ground
Figure 1 - Connection for Differential Protection
(Line-to-Line)
plane for best results.
ADSL Protection
Line
In
1
4
Line
Out
A typical ADSL protection circuit is shown in Figure
3. A protection device with an operating voltage of
270 volts is connected on the line side of the circuit. A
high voltage device is used due to the presence of the
ring signal. Secondary IC side protection is achieved
with low voltage TVS devices. The LCDA24C-1 is
connected between to transmit line pairs. Since the
2
3
LCDA24C-1 has a working voltage of 24 volts, it may
be used on pairs with signal swings as high as +/-12
volts. The SD05C is used to protect the receive pairs.
Figure 2 - Connection for Common Mode
Protection (Line-to-Ground)
The signal swings on these lines can be as high as +/-
5 volts.
Figure 3 - Typical ADSL Protection Circuit
? 2004 Semtech Corp.
4
www.semtech.com
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