描述 Description

The CM1224 family of diode arrays has been designed to provide ESD protection for electronic components or subsystems requiring minimal capacitive loading. These devices are 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 either the positive (VP) or negative (VN) supply rail. A Zener diode is embedded between VP and VN, offering two advantages. First, it protects the VCC rail against ESD strikes, and second, it eliminates the need for a bypass capacitor that would otherwise be needed for absorbing positive ESD strikes to ground. The CM1224 protects against ESD pulses up to ±8kV per the IEC 61000-4-2 standard. These devices are particularly well-suited for protecting systems using high-speed ports such as USB 2.0, IEEE1394 (Firewire?, iLink?), Serial ATA, DVI, HDMI and corresponding ports in removable storage, digital camcorders, as well as DVD-RW drives and other applications where extremely low loading capacitance with ESD protection are required. The CM1224 family of devices has lead-free finishing in a small package footprint.

特性 Features

? Two or four channels of ESD protection up to 8kV contact discharge
? General purpose high-speed data line ESD protection
? Low channel input capacitance of 0.7pF typical with Minimal capacitance change with temperature and voltage
? Channel input capacitance matching of 0.02pF typical is ideal for differential signals
? Zener diode protects supply rail and eliminates the need for external by-pass capacitors

簡介

CM1224屬于電路保護的TVS-二極管。由制造生產的CM1224TVS - 二極管TVS 二極管是一種半導體器件，可用于限制或阻止特定電壓電平的浪涌。該系列產品使用二極管（只能單向導電的元器件）進行設計。TVS 是 Transient Voltage Suppression/Suppressor（瞬態(tài)電壓抑制/抑制器）的首字母縮寫。類型包括轉向（軌至軌）或齊納，具有單向通道、雙向通道、電壓 – 反關態(tài)、電壓 – 擊穿、電壓 – 箝位、電流 – 峰值脈沖、功率 – 峰值脈沖和電源線路保護等特征。