CM1293A

• 2 and 4 channels of ESD protection
• Note: For the 8-channel device, see the CM1293 datasheet.
• Provides ESD protection to IEC61000-4-2
  ― ±8kV contact discharge
• Low loading capacitance of 2.0pF max.
• Low clamping voltage
• Channel I/O to I/O capacitance 1.5pF typical
• Zener diode protects supply rail and eliminates the need for external by-pass capacitors
• Each I/O pin can withstand over 1000 ESD strikes*
• Available in lead-free SOT and MSOP packages

The CM1293A 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, 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 CM1293A will protect against ESD pulses up to ±8kV contact discharge) per the IEC 61000-4-2 Level 4 standard.

CM1293A is 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 CM1293A family of devices is available with lead-free finishing.