CM1223 Datasheet, PDF (1/19 Pages) California Micro Devices Corp – Industry First Low Capacitance ESD Protection Arrays w/Backdrive Protection

Industry First Low Capacitance ESD
Protection Arrays w/Backdrive Protection
CM1223
Features
• Two, four, and eight 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 at 0.11pF (typical)
• Zener diode protects supply rail and eliminates the
need for external bypass 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
• RoHS-compliant, lead-free packaging
Applications
• USB2.0 ports at 480Mbps in desktop PCs, notebooks
and peripherals
• IEEE1394 Firewire® ports at 400Mbps / 800Mbps
• DVI ports, HDMI ports in notebooks, set top boxes,
digital TVs, LCD displays
• UDI and display ports
• Serial ATA ports in desktop PCs and hard disk drives
• PCI Express ports
• General purpose high-speed data line ESD
protection
Block Diagram
Product Description
The CM1223 family of diode arrays are 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 (V_P) or negative (V_N) supply rail. A Zener diode is
embedded between V_P and V_N, to absorb positive ESD
strikes and provide ESD protection for the V_P rail. An
additional diode is integrated to serve as backdrive current
protection. The CM1223 protects against ESD pulses up to
±8kV per the IEC 61000-4-2 standard. In addition, all pins
are protected from contact discharges of greater than
±15kV as outlined by the MIL-STD-883D (Method 3015)
specification for Human Body Model (HBM) ESD.
These devices 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, as well as other applications
where extremely low loading capacitance with ESD
protection are required in a small package footprint.
The CM1223 family of devices are manufactured with
RoHS-compliant, lead-free packaging.
©2010 SCILLC. All rights reserved.
April 2010 – Rev.4
Publication Order Number:
CM1223/D