CM1225 Datasheet PDF - ON Semiconductor

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CM1225
ON Semiconductor

Part Number CM1225
Description 4-Channel Low Capacitance ESD Protection Arrays
Page 11 Pages


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Protection Arrays
CM1225
Features
Four channels of ESD protection
Provides ESD protection to IEC61000-4-2 Level 4
±8kV contact discharge
Low channel input capacitance of 0.8pF (typically)
Channel input capacitance matching (I/O to I/O) of
0.02pF (typically) is ideal for differential signals
Minimal capacitance change for temperature and
voltage
Zener diode eliminates the need for external bypass
capacitors
Each I/O pin can withstand over 1000 ESD strikes*
Available in a RoHS compliant (lead-free) package
Applications
HDMI ports, DVI ports in notebooks, set top boxes,
digital TVs, and LCD displays
Display and MDDI ports
Serial ATA ports in desktop PCs and hard disk
drives
PCI Express ports
USB2.0 ports at 480Mbps in desktop PCs,
notebooks and peripherals
IEEE1394 FireWire ports at 400Mbps / 800Mbps
General purpose high-speed data line ESD
protection
Protection of interface ports or IC pins which are
exposed to high ESD levels
Product Description
The CM1225 diode array has been designed to provide
ESD protection for electronic components or
subsystems requiring minimal capacitive loading. This
device is 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 the ground pins (VN). A Zener diode is
embedded between the positive terminal of the diode
pair to the ground. This eliminates the need for an
external bypass capacitor to absorb positive ESD strikes
to ground. The CM1225 protects against ESD pulses up
to ±8kV per the IEC 61000-4-2 standard.
The CM1225 is particularly well-suited for protecting
systems using high-speed ports such as HDMI, DVI,
display, MDDI, USB 2.0, Serial ATA, IEEE1394
(FireWire and i.LINK), 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 CM1225 is available in a RoHS-compliant, uUDFN
10-pin package.
*Standard test condition is IEC61000-4-2 level 4 test circuit with each pin subjected to ±8kV contact discharge for 1000 pulses. Discharges are timed at 1 second intervals and all 1000 strikes are completed in one
continuous test run. The part is then subjected to standard production test to verify that all of the tested parameters are within spec after the 1000 strikes.
©2010 SCILLC. All rights reserved.
April 2010 – Rev. 2
Publication Order Number:
CM1225/D



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CM1225www.DataSheet4U.com
Pin Descriptions
4-CHANNEL, 10-LEAD, UUDFN-10 PACKAGE
Pin
Name
Type
1
CH1
I/O ESD Channel
2
CH2
I/O ESD Channel
3
VN
GND
Ground
4
CH3
I/O ESD Channel
5
CH4
I/O ESD Channel
6 NC
No Connect
7 NC
No Connect
8
VN
GND
Ground
9 NC
No Connect
10 NC
No Connect
Description
Rev. 2 | Page 2 of 11 | www.onsemi.com



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Protection Arrays
CM1225
Ordering Information
# of Channels
4
PART NUMBERING INFORMATION
Lead-free Finish
Leads
Package
Ordering Part Number1
Part Marking
10
uUDFN-10
CM1225-04DE
1225
Note 1: Parts are shipped in Tape and Reel form unless otherwise specified.
Specifications
PARAMETER
Operating Temperature Range
Storage Temperature Range
DC Voltage at any channel input
ABSOLUTE MAXIMUM RATINGS
RATING
–40 to +85
–65 to +150
- 0.5 to 5.5
UNITS
°C
°C
V
STANDARD OPERATING CONDITIONS
PARAMETER
Operating Temperature Range
RATING
–40 to +85
UNITS
°C
©2010 SCILLC. All rights reserved.
April 2010 – Rev. 2
Publication Order Number:
CM1225/D



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CM1225www.DataSheet4U.com
ELECTRICAL OPERATING CHARACTERISTICS(SEE NOTE 1)
SYMBOL PARAMETER
VF Diode Forward Voltage
Top Diode
Bottom Diode
ILEAK Channel Leakage Current
CIN Channel Input Capacitance
CONDITIONS
IF = 10mA; TA=25ûC;
Note 2
TA=25°C; VIN=3.3V, VN=0V
At 1 MHz, VN=0V, VIN=1.65V
MIN TYP MAX UNITS
0.65
-1.20
0.85
-0.85
±0.1
0.80
1.20
-0.65
±1.0
1. 0
V
V
µA
pF
CIN
VESD
VCL
RDYN
Channel Input Capacitance Matching
At 1 MHz, VN=0V, VIN=1.65V
ESD Protection - Peak Discharge Voltage
at any channel input, in system:
Contact discharge per
IEC 61000-4-2 standard
Channel Clamp Voltage
Positive Transients
Negative Transients
Dynamic Resistance
Positive Transients
Negative Transients
TA=25°C;
Notes 2 and 3
TA=25°C, IPP = 1A,
tP = 8/20µS;
Note 3
IPP = 1A, tP = 8/20µS
Any I/O pin to Ground;
Note 3
0.02
±8
+10.0
-4.5
1.3
1.3
pF
kV
V
V
Note 1: All parameters specified at TA = –40°C to +85°C unless otherwise noted.
Note 2: Standard IEC 61000-4-2 with CDischarge = 150pF, RDischarge = 330, VN grounded.
Note 3: These measurements performed with no external capacitor.
Rev. 2 | Page 4 of 11 | www.onsemi.com



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