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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
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 (VP) or negative (VN) supply rail. A Zener diode is embedded between VP and VN, to absorb positive ESD strikes and provide ESD protection for the VP 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(R), iLinkTM), 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.
Applications
* * * * * * *
USB2.0 ports at 480Mbps in desktop PCs, notebooks and peripherals IEEE1394 Firewire(R) 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
(c)2010 SCILLC. All rights reserved. April 2010 - Rev.4
Publication Order Number: CM1223/D
CM1223
Package/Pinout Diagrams
Rev. 4 | Page 2 of 19 | www.onsemi.com
CM1223
Pin Configuration
PIN DESCRIPTIONS 2-CHANNEL, 4-LEAD SOT143-4 PACKAGE PIN 1 2 3 4 NAME VN CH1 CH2 VP TYPE GND I/O I/O PWR PIN Negative voltage supply rail ESD Channel ESD Channel Positive voltage supply rail PIN 1 2 3 4 5 6 2-CHANNEL, 5-LEAD SOT23-5 PACKAGE 7 PIN 1 2 3 4 5 NAME NC VN CH1 CH2 VP GND I/O I/O PWR TYPE DESCRIPTION No connect Negative voltage supply rail ESD Channel ESD Channel Positive voltage supply rail PIN 1 4-CHANNEL, 6-LEAD SOT23-6 PACKAGE PIN 1 2 3 4 5 6 NAME CH1 VN CH2 CH3 VP CH4 TYPE I/O GND I/O I/O PWR I/O DESCRIPTION ESD Channel Negative voltage supply rail ESD Channel ESD Channel Positive voltage supply rail ESD Channel 2 3 4 5 6 7 8 9 10 8-CHANNEL, 10-LEAD MSOP-10 PACKAGE NAME CH1 CH2 CH3 CH4 VN CH5 CH6 VP CH7 CH8 TYPE I/O I/O I/O I/O GND I/O I/O PWR I/O I/O DESCRIPTION ESD Channel ESD Channel ESD Channel ESD Channel Negative voltage supply rail ESD Channel ESD Channel Positive voltage supply rail ESD Channel ESD Channel 9 10 CH4 NC I/O ESD Channel No connect 8 NC VN GND No connect Negative voltage supply rail 4-CHANNEL, 10-LEAD MSOP-10 PACKAGE NAME CH1 NC VP CH2 NC CH3 I/O PWR I/O TYPE I/O DESCRIPTION ESD Channel No connect Positive voltage supply rail ESD Channel No connect ESD Channel
Rev. 4 | Page 3 of 19 | www.onsemi.com
CM1223
Ordering Information
PART NUMBERING INFORMATION
# of Channels 2 2 4 4 8 Leads 5 4 6 10 10 Package SOT23-5 SOT143-4 SOT23-6 MSOP-10 MSOP-10 Ordering Part Number CM1223-02SO CM1223-02SR CM1223-04SO CM1223-04MR CM1223-08MR
1
Part Marking D334 D337 D335 D338 D336
Note 1: Parts are shipped in Tape and Reel form unless otherwise specified.
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER Operating Supply Voltage (VP - VN) Operating Temperature Range Storage Temperature Range DC Voltage at any channel input RATING 6.0 -40 to +85 -65 to +150 (VN - 0.5) to (VP + 0.5) UNITS V C C V
STANDARD OPERATING CONDITIONS
PARAMETER Operating Temperature Range Package Power Rating SOT143-4 Package (CM1223-02SR) SOT23-5 Package (CM1223-02SO) SOT23-6 Package (CM1223-04SO) MSOP-10 Package (CM1223-04MR) MSOP-10 Package (CM1223-08MR) RATING -40 to +85 UNITS C
225 225 225 400 400
mW mW mW mW mW
Rev. 4 | Page 4 of 19 | www.onsemi.com
CM1223
ELECTRICAL OPERATING CHARACTERISTICS
SYMBOL PARAMETER VP IP VSCL Operating Supply Voltage (VP-VN) Operating Supply Current Signal Clamp Voltage Positive Transients Negative Transients Channel Leakage Current Channel Input Capacitance (VP-VN)=3.3V IF = 8mA; TA=25 C CONDITIONS
(SEE NOTE 1)
MIN
TYP 3.3
MAX 5.5 8.0
UNITS V A
6.7 0.60 TA=25 VP=5V, VN=0V C; At 1 MHz, VP=3.3V, VN=0V, VIN=1.65V
8.2 0.80 0.1 1.0 1.0 1.5
V V A pF
ILEAK CIN
C
IN
Channel Input Capacitance Matching Mutual Capacitance between signal pin and adjacent signal pin ESD Protection Peak Discharge Voltage at any channel input, in system a) Contact discharge per IEC 61000-4-2 standard b) Human Body Model, MIL-STD-883, Method 3015 Channel Clamp Voltage Positive Transients Negative Transients Dynamic Resistance Positive Transients Negative Transients
At 1 MHz, VP=3.3V, VN=0V, VIN=1.65V
0.02
pF
CMUTUAL
At 1 MHz, VP=3.3V, VN=0V, VIN=1.65V
0.11
pF
VESD
TA=25 Notes 3 and 4 C; TA=25 Notes 2 and 4 C;
8 15
kV kV
VCL
C, TA=25 IPP = 1A, tP = 8/20S; Note 4
+8.8 -1.4
V V
RDYN
C, TA=25 IPP = 1A, tP = 8/20S Any I/O pin to Ground; Note 4
0.7 0.4

Note 1: Note 2: Note 3: Note 4:
All parameters specified at TA = -40 to +85 unless otherwise noted. C C Human Body Model per MIL-STD-883, Method 3015, CDischarge = 100pF, RDischarge = 1.5K, VP = 3.3V, VN grounded. Standard IEC 61000-4-2 with CDischarge = 150pF, RDischarge = 330, VP = 3.3V, VN grounded. These measurements performed with no external capacitor on VP (VP floating).
Rev. 4 | Page 5 of 19 | www.onsemi.com
CM1223
Performance Information
Input Channel Capacitance Performance Curves
Rev. 4 | Page 6 of 19 | www.onsemi.com
CM1223
Performance Information (Cont'd)
Typical Filter Performance (nominal conditions unless specified otherwise, 50 Ohm Environment)
Figure 1. Insertion Loss (S21) VS. Frequency (0V DC Bias, VP=3.3V, MSOP-8 Package)
Figure 2. Insertion Loss (S21) VS. Frequency (2.5V DC Bias, VP=3.3V, MSOP-8 Package)
Rev. 4 | Page 7 of 19 | www.onsemi.com
CM1223
Performance Information (Cont'd)
Typical Filter Performance (nominal conditions unless specified otherwise, 50 Ohm Environment)
Figure 3. Insertion Loss (S21) VS. Frequency (0V DC Bias, VP=3.3V, MSOP-10 Package)
Figure 4. Insertion Loss (S21) VS. Frequency (2.5V DC Bias, VP=3.3V)
Rev. 4 | Page 8 of 19 | www.onsemi.com
CM1223
Backdrive Protection
Backdrive protection is needed to block against backdrive current flowing from a high potential voltage node toward a lower potential voltage node through the interface cable. For example, consider a DVD player connected to a TV via an HDMI interface. If the DVD player is switched off and the TV is left on, there is a possibility of reverse current flow back into the main power supply rail of the DVD player. Typically, the DVD's power supply has some form of associated bulk supply capacitance, and it is possible over time to charge that bulk supply capacitance to some intermediate level. If that level rises above the power-on-reset (POR) voltage level of some of the integrated circuits, the DVD player may not reset properly when the DVD player is turned back on. This is largely because all CMOS logic exhibits a very high impedance on the power rail node even when "off". To avoid this situation, the CM1223 with integrated backdrive protection diode was designed to block backdrive current, guaranteeing no more than 5A on any I/O pin when the I/O pin voltage is greater than the CM1223 supply voltage.
Application Information
Design Considerations
To realize the maximum protection against ESD pulses, care must be taken in the PCB layout to minimize parasitic series inductances on the Supply/Ground rails as well as the signal trace segments between the signal input (typically a connector) and the ESD protection device. Application of Positive ESD Pulse between Input Channel and Ground illustrates an example of a positive 8kV ESD pulse striking an input channel. The 8kV ESD current pulse will divert along the path as indicated in Application of Positive ESD Pulse between Input Channel and Ground, through the D1 diode and the Zener diode back to the ground rail. An ESD current pulse can rise from zero to its peak value in a very short time. For example, a level 4 contact discharge per the IEC61000-4-2 standard results in a current pulse that rises from zero to 30 Amps in 1ns. The CM1223 has a fast response time of less than 1ns and low clamp voltage to handle this pulse scenario. Similarly for negative ESD pulses, parasitic series inductance from the VN pin to the ground rail will lead to drastically increased negative voltage on the line being protected. The CM1223 also has an integrated backdrive diode between VP and VN to prevent backdrive current flow from the powered sources. As a general rule, the ESD Protection Array should be located as close as possible to the point of entry of expected electrostatic discharges.
Additional Information
See also California Micro Devices Application Note AP209, "Design Considerations for ESD Protection", in the Applications section at www.cmd.com.
Rev. 4 | Page 9 of 19 | www.onsemi.com
CM1223
POSITIVE SUPPLY
One Channel of CM1223
PATH OF POSI TIVE ESD CURRENT PULSE IESD
LINE BEING PROTECTED
I/O pin
PATH OF NEGA TIVE ESD
SYSTEM OR CIR CUITRY
GROUND RAIL
Figure 5. Application of Positive ESD Pulse between Input Channel and Ground
Figure 6. Application of Positive ESD Pulse between Input Channel and Ground
Rev. 4 | Page 10 of 19 | www.onsemi.com
CM1223
Mechanical Details
The CM1223 is available in SOT143-4, SOT23-5, SOT23-6, and MSOP-10 packages with a lad-free finishing option. The various package drawings are presented below. SOT143 Mechanical Specifications Dimensions for CM1223-02SR devices supplied in 4-pin SOT143 packages are presented below.
PACKAGE DIMENSIONS
Package Pins Dimensions Millimeters Min A A1 b b2 c D E E1 e e1 L L1 # per tape and reel Max Min
SOT143 4
Inches Max
0.80 0.05 0.30 0.76 0.08 2.80 2.10 1.20
1.22 0.15 0.50 0.89 0.20 3.04 2.64 1.40
0.031 0.002 0.012 0.030 0.003 0.110 0.082 0.047
0.048 0.006 0.019 0.035 0.008 0.119 0.103 0.055
1.92 BSC 0.20 BSC 0.4 0.6
0.075 BSC 0.008 BSC 0.016 0.021 REF 3000 pieces 0.024
0.54 REF
Package Dimensions for SOT143
Controlling dimension: millimeters
Rev. 4 | Page 11 of 19 | www.onsemi.com
CM1223
Tape and Reel Specifications
PACKAGE SIZE PART NUMBER (mm) POCKET SIZE (mm) B0 X A0 X K0 TAPE WIDTH W REEL DIAMETER QTY PER REEL P0 P1
CM1223-02SR
2.92 X 2.37 X 1.01
2.60 X 3.15 X 1.20
8mm
178mm (7")
3000
4mm
4mm
Rev. 4 | Page 12 of 19 | www.onsemi.com
CM1223
Mechanical Details (cont'd)
SOT23-5 Mechanical Specifications The CM1223-02SO is supplied in a 5-pin SOT23 package. Dimensions are presented below.
PACKAGE DIMENSIONS
Package Pins Dimensions Millimeters Min A A1 b c D E E1 e e1 L L1 # per tape and reel Max Min
SOT23-5 (JEDEC name is MO-178) 5
Inches Max
-0.00 0.30 0.08 2.75 2.60 1.45
1.45 0.15 0.50 0.22 3.05 3.00 1.75
-0.0000 0.0118 0.0031 0.1083 0.1024 0.0571
0.0571 0.0059 0.0197 0.0087 0.1201 0.1181 0.0689
0.95 BSC 1.90 BSC 0.30 0.60
0.0374 BSC 0.0748 BSC 0.0118 0.0236
0.60 REF
0.0236 REF 3000 pieces
Controlling dimension: millimeters
Package Dimensions for SOT23-5
Rev. 4 | Page 13 of 19 | www.onsemi.com
CM1213
Tape and Reel Specifications
PART NUMBER PACKAGE SIZE (mm) POCKET SIZE (mm) B0 X A0 X K0 TAPE WIDTH W REEL DIAMETER QTY PER REEL P0 P1
CM1223-02SO
2.90 X 2.80 X 1.45
3.20 X 3.20 X 1.40
8mm
178mm (7")
3000
4mm
4mm
Rev. 4 | Page 14 of 19 | www.onsemi.com
CM1223
Mechanical Details (cont'd)
SOT23-6 Mechanical Specifications CM1223-04SO devices are packaged in 6-pin SOT23 packages. Dimensions are presented below.
PACKAGE DIMENSIONS
Package Pins Dimensions Millimeters Min A A1 b c D E E1 e e1 L L1 # per tape and reel Max Min
SOT23-6 (JEDEC name is MO-178) 6
Inches Max
-0.00 0.30 0.08 2.75 2.60 1.45
1.45 0.15 0.50 0.22 3.05 3.00 1.75
-0.0000 0.0118 0.0031 0.1083 0.1024 0.0571
0.0571 0.0059 0.0197 0.0087 0.1201 0.1181 0.0689
0.95 BSC 1.90 BSC 0.30 0.60
0.0374 BSC 0.0748 BSC 0.0118 0.0236
0.60 REF
0.0236 REF 3000 pieces
Controlling dimension: millimeters
Package Dimensions for SOT23-6
Rev. 4 | Page 15 of 19 | www.onsemi.com
CM1213
Tape and Reel Specifications
PART NUMBER PACKAGE SIZE (mm) POCKET SIZE (mm) B0 X A0 X K0 TAPE WIDTH W REEL DIAMETER QTY PER REEL P0 P1
CM1223-04SO
2.90 X 2.80 X 1.45
3.20 X 3.20 X 1.40
8mm
178mm (7")
3000
4mm
4mm
Rev. 4 | Page 16 of 19 | www.onsemi.com
CM1223
Mechanical Details (cont'd)
MSOP-10 Mechanical Specifications, 10 pin The CM1223-08MR 10-lead MSOP package dimensions are presented below.
PACKAGE DIMENSIONS
Package Pins Dimensions Millimeters Min A A1 B C D E e H L # per tape and reel Max Min
MSOP 10
Inches Max
0.75 0.05 0.17 0.13 2.90 2.90
0.95 0.15 0.27 0.23 3.10 3.10
0.028 0.002 0.007 0.005 0.114 0.114
0.038 0.006 0.013 0.009 0.122 0.122
0.50 BSC 4.90 BSC 0.40 0.70
0.0196 BSC 0.193 BSC 0.0137 4000 0.029
Controlling dimension: millimeters
Package Dimensions for MSOP-10
Rev. 4 | Page 17 of 19 | www.onsemi.com
CM1223
Tape and Reel Specifications
PART NUMBER PACKAGE SIZE (mm) POCKET SIZE (mm) B0 X A0 X K0 TAPE WIDTH W REEL DIAMETER QTY PER REEL P0 P1
CM1223-08MR
3.00 X 3.00 X 0.85
3.30 X 5.30 X 1.30
12mm
330mm (13")
4000
4mm
8mm
Rev. 4 | Page 18 of 19 | www.onsemi.com
CM1223
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any
products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. "Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
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Rev. 4 | Page 19 of 19 | www.onsemi.com

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