CM1223

• 2, 4, and 8 channels of ESD protection with integrated backdrive protection on all lines
• Provides ESD protection to IEC61000-4-2 Level 4
  • 8kV contact discharge
  • 15kV air discharge
• Low channel input capacitance of 1.0pF typical
• Minimal capacitance change with temperature and voltage
• Channel I/O to Gnd capacitance difference of 0.02pF typical is ideal for differential signals
• Mutual capacitance between signal pin and adjacent signal pin - 0.11pF typical
• Zener diode protects supply rail and eliminates the need for external by-pass capacitors
• Pin compatible with CM1213-02, -04, and -08
• Each I/O pin can withstand over 1000 ESD strikes
• Available in SOT, and MSOP packages
• Lead-free version available

The CM1223 family of diode arrays has been designed to provide ESD protection for electronic components or sub-systems 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, absorbing positive ESD strikes and also providing ESD protection for the VP rail. An additional diode is added in this device to serve as backdrive current protection. The CM1223 will protect against ESD pulses up to ±8kV per the IEC 61000-4-2 standard and using the MIL-STD-883D (Method 3015) specification for Human Body Model (HBM) ESD, all pins are protected from contact discharges of greater than ±15kV.

CM1223 are particularly well-suited for protecting systems using high-speed ports such as USB2.0, 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.

The CM1223 family of devices is available with optional lead-free finishing.

Note: Some of the devices listed here have suggested replacements available. Please see additional information at the end of this page.