CM1293 Datasheet, PDF (1/10 Pages) California Micro Devices Corp – 2, 4, and 8-Channel Low Capacitance ESD Protection Arrays

CM1293
2, 4, and 8-Channel Low Capacitance ESD Protection Arrays
Features
• 2, 4, and 8 channels of ESD protection
• Provides ESD protection to IEC61000-4-2
- 8kV contact discharge
- 15kV air 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 SOT, and MSOP packages
• Lead-free version available
Applications
• DVI ports, HDMI ports in notebooks, set top boxes,
digital TVs, LCD displays
• Serial ATA ports in desktop PCs and hard disk
drives
• PCI Express ports
• General purpose high-speed data line ESD
protection
Product Description
The CM1293 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 neg-
ative 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, offering two advantages. First, it
protects the V_CC 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 CM1293 will protect against
ESD pulses up to (±15kV air, ±8kV contact discharge)
per the IEC 61000-4-2 Level 4 standard.
This device is particularly well-suited for protecting sys-
tems 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 CM1293 family of devices is available with
optional lead-free finishing.
Electrical Schematics
V_P
CH1
CH2
V_N
CM1293-02ST/SO
CM1293--02SR
CH4
V_P
CH3
CH1
V_N
CH2
CM1293-04ST/SO
CM1293-04MS/MR
CH8
CH7
V_P
CH6 CH5
CH1 CH2
V_N
CH3
CH4
CM1293-08MS/MR
© 2006 California Micro Devices Corp. All rights reserved.
01/26/06
490 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: [phone] ● Fax: [phone] ● www.cmd.com
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