CM1213A−04SO 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 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. This device will protect against ESD pulses up to 8 kV per the IEC 61000−4−2 standard. This device is 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, DVD−RW drives and other applications where extremely low loading capacitance with ESD protection are required in a small package footprint. .
Four Channels of ESD Protection
Provides ESD Protection to IEC61000−4−2 Level 4
±8 kV Contact Discharge
Low Channel Input Capacitance of 0.85 pF Typical
Minimal Capacitance Change with Temperature and Voltage
Channel Input Capacitance Matching of 0.02 pF Typical is Ideal for Differential Dignals
Zener Diode Protects Supply Rail and Eliminates the Need for External By-pass Capacitors