Product Description

The CM1225 diode array has been designed to provide ESD protection for electronic components or subsystems requiring minimal capacitive loading. This device is ideal for protecting systems with high data and clock rates or for circuits requiring low capacitive loading. Each ESD channel consists of a pair of diodes in series which steer the positive or negative ESD current pulse to the ground pins (VN). A Zener diode is embedded between the positive terminal of the diode pair to the ground. This eliminates the need for an external bypass capacitor to absorb positive ESD strikes to ground. The CM1225 protects against ESD pulses up to ±8kV per the IEC 61000-4-2 standard.

Features

• Four channels of ESD protection

• Provides ESD protection to IEC61000-4-2 Level 4

• ±8kV contact discharge

• Low channel input capacitance of 0.8pF (typically)

• Channel input capacitance matching (I/O to I/O) of 0.02pF (typically) is ideal for differential signals

• Minimal capacitance change for temperature and voltage

• Zener diode eliminates the need for external bypass capacitors

• Each I/O pin can withstand over 1000 ESD strikes*

• Available in a RoHS compliant (lead-free) package

Applications

• HDMI ports, DVI ports in notebooks, set top boxes, digital TVs, and LCD displays

• Display and MDDI ports

• Serial ATA ports in desktop PCs and hard disk drives

• PCI Express ports

• USB2.0 ports at 480Mbps in desktop PCs, notebooks and peripherals

• IEEE1394 FireWire ports at 400Mbps / 800Mbps

• General purpose high-speed data line ESD protection

• Protection of interface ports or IC pins which are exposed to high ESD levels

CM1225属于电路保护 > TVS - 二极管。安森美半导体公司制造生产的CM1225TVS - 二极管TVS 二极管是一种半导体器件，可用于限制或阻止特定电压电平的浪涌。该系列产品使用二极管（只能单向导电的元器件）进行设计。TVS 是 Transient Voltage Suppression/Suppressor（瞬态电压抑制/抑制器）的首字母缩写。类型包括转向（轨至轨）或齐纳，具有单向通道、双向通道、电压 – 反关态、电压 – 击穿、电压 – 箝位、电流 – 峰值脉冲、功率 – 峰值脉冲和电源线路保护等特征。