CM1224_12 Datasheet, PDF (1/11 Pages) ON Semiconductor – 2 and 4-Channel Low Capacitance ESD Protection Arrays

CM1224
2 and 4-Channel
Low Capacitance
ESD Protection Arrays
Product Description
The CM1224 family of diode arrays has been 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, 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 CM1224 will protect
against ESD pulses up to ±8 kV per the IEC 61000−4−2 standard.
These devices are particularly well−suited for protecting systems
using high−speed ports such as USB 2.0, IEEE1394 (Firewire^®,
iLinkt), 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.
The CM1224 family of devices has lead−free finishing in a small
package footprint.
http://onsemi.com
SOT−143
SR SUFFIX
CASE 318A
SOT23−6
SO SUFFIX
CASE 527AJ
MSOP 10
MR SUFFIX
CASE 846AE
BLOCK DIAGRAM
V_P
CH4 V_P CH3
CH1
CH2
V_N
CM1224−02SR
CH1 V_N CH2
CM1224−04SO
CM1224−04MR
MARKING DIAGRAM
Features
• Two or Four Channels of ESD Protection
• Provides ESD Protection to IEC61000−4−2 Level 4
±8 kV Contact Discharge
• Low Channel Input Capacitance of 0.7 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
• Low Clamping Voltage (V_CLAMP) at 10 V
• Low Dynamic Resistance (R_DYN) at 1.08 W
• Each I/O Pin Can Withstand Over 1000 ESD Strikes
• Available in SOT and MSOP Lead−free Packages
• These Devices are Pb−Free and are RoHS Compliant
L242 MG
G
SOT143−4
L244 MG
G
1
SOT23−6
L243 MG
G
MSOP−10
L24x = Specific Device Code
M
= Date Code
G
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Device
CM1224−02SR
CM1224−04SO
Package
SOT143−4
(Pb−Free)
SOT23−6
(Pb−Free)
Shipping
3000/Tape & Reel
3000/Tape & Reel
Applications
• USB2.0 Ports at 480 Mbps in desktop PCs, Notebooks and Peripherals
• IEEE1394 Firewire^® Ports at 400 Mbps / 800 Mbps
• DVI Ports, HDMI Ports in Notebooks, Set Top Boxes, Digital TVs,
LCD Displays
CM1224−04MR MSOP−10 4000/Tape & Reel
(Pb−Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
• Serial ATA Ports in Desktop PCs and Hard Disk Drives
• PCI Express Ports
• General Purpose High−speed Data Line ESD Protection
© Semiconductor Components Industries, LLC, 2012
1
July, 2012 − Rev. 5
Publication Order Number:
CM1224/D