CM1225

• 4 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

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.

The CM1225 is particularly well-suited for protecting systems using high-speed ports such as HDMI, DVI, display, MDDI, USB 2.0, Serial ATA, IEEE1394 (FireWire and i.LINK), corresponding ports in removable storage, digital camcorders, DVD-RW drives and other applications where extremely low loading capacitance with ESD protection are required in a small package footprint.

The CM1225 is available in a RoHS-compliant, uUDFN 10-pin package.