4-Channel Low Capacitance ESD 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 CM1225 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 4 CH3 I/O ESD Channel 5 CH4 I/O ESD Channel 6 NC No Connect 7 NC No Connect 8 VN 9 NC No Connect 10 NC No Connect GND Description Ground Ground Rev. 2 | Page 2 of 11 | www.onsemi.com 4-Channel Low Capacitance ESD Protection Arrays CM1225 Ordering Information PART NUMBERING INFORMATION Lead-free Finish 1 # of Channels Leads Package Ordering Part Number Part Marking 4 10 uUDFN-10 CM1225-04DE 1225 Note 1: Parts are shipped in Tape and Reel form unless otherwise specified. Specifications ABSOLUTE MAXIMUM RATINGS PARAMETER RATING UNITS Operating Temperature Range –40 to +85 °C Storage Temperature Range –65 to +150 °C DC Voltage at any channel input - 0.5 to 5.5 V STANDARD OPERATING CONDITIONS PARAMETER Operating Temperature Range ©2010 SCILLC. All rights reserved. April 2010 – Rev. 2 RATING UNITS –40 to +85 °C Publication Order Number: CM1225/D CM1225 ELECTRICAL OPERATING CHARACTERISTICS SYMBOL PARAMETER CONDITIONS Diode Forward Voltage Top Diode Bottom Diode IF = 10mA; TA=25ûC; Note 2 ILEAK Channel Leakage Current CIN (SEE NOTE 1) MIN TYP MAX UNITS 0.65 -1.20 0.85 -0.85 1.20 -0.65 V V TA=25°C; VIN=3.3V, VN=0V ±0.1 ±1.0 µA Channel Input Capacitance At 1 MHz, VN=0V, VIN=1.65V 0.80 1. 0 pF ∆C Channel Input Capacitance Matching At 1 MHz, VN=0V, VIN=1.65V 0.02 VESD ESD Protection - Peak Discharge Voltage at any channel input, in system: Contact discharge per IEC 61000-4-2 standard TA=25°C; Notes 2 and 3 Channel Clamp Voltage Positive Transients Negative Transients TA=25°C, IPP = 1A, tP = 8/20µS; Note 3 Dynamic Resistance Positive Transients Negative Transients IPP = 1A, tP = 8/20µS Any I/O pin to Ground; Note 3 VF IN VCL RDYN 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 = 330Ω, VN grounded. Note 3: These measurements performed with no external capacitor. Rev. 2 | Page 4 of 11 | www.onsemi.com pF kV ±8 +10.0 -4.5 V V 1.3 1.3 Ω Ω 4-Channel Low Capacitance ESD Protection Arrays CM1225 Performance Information Input Channel Capacitance Performance Curves ©2010 SCILLC. All rights reserved. April 2010 – Rev. 2 Publication Order Number: CM1225/D CM1225 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) Figure 2. Insertion Loss (S21) VS. Frequency (2.5V DC Bias) Rev. 2 | Page 6 of 11 | www.onsemi.com 4-Channel Low Capacitance ESD Protection Arrays CM1225 Application Information Design Considerations As a general rule, the CM1225 ESD protection array should be located as close as possible to the point of entry of expected electrostatic discharges. Use minimum PCB trace lengths to ground planes and between the signal input and the ESD devices. Additional Information See also California Micro Devices Application Note AP209, “Design Considerations for ESD Protection,” in the Applications section at www.calmicro.com. Figure 3. Typical HDMI ESD Protection with CM1225 Connection ©2010 SCILLC. All rights reserved. April 2010 – Rev. 2 Publication Order Number: CM1225/D CM1225 Figure 4. Display Port ESD Proetction with CM1225 Connection Rev. 2 | Page 8 of 11 | www.onsemi.com 4-Channel Low Capacitance ESD Protection Arrays CM1225 Mechanical Details uUDFN-10 Mechanical Specifications, 0.5mm The 10-lead, 0.5mm pitch uUDFN package dimensions are presented below. PACKAGE DIMENSIONS Package uUDFN JEDEC No. MO-229C Leads 10 * Millimeters Dim. Inches Min Nom Max Min Nom Max A 0.45 0.50 0.55 0.180 0.020 0.022 A1 0.00 0.02 0.05 0.000 0.001 0.002 A3 0.102 0.127 0.152 0.004 0.005 0.006 b 0.15 0.20 0.25 0.006 0.008 0.010 D 2.40 2.50 2.60 0.095 0.098 0.102 E 0.90 1.00 1.10 0.035 0.039 0.043 0.50 BSC e 0.020 BSC g 0.35 0.40 0.45 0.014 0.016 0.018 L 0.30 0.35 0.40 0.012 0.014 0.016 # per tape and reel 3000 pieces Controlling dimension: millimeters * This package is compliant with JEDEC standard MO-229C with the exception of the D and E dimensions as called out in the table above. ©2010 SCILLC. All rights reserved. April 2010 – Rev. 2 Dimensions for 10-Lead, 0.5mm Pitch uUDFN Package Publication Order Number: CM1225/D CM1225 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 CM1225 2.50 X 1.00 X 0.50 2.80 X 1.45 X 0.70 8mm 178mm (7") 3000 4mm 4mm Rev. 2 | Page 10 of 11 | www.onsemi.com 4-Channel Low Capacitance ESD Protection Arrays CM1225 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. 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This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: N. American Technical Support: 800-282-9855 Literature Distribution Center for ON Semiconductor Toll Free USA/Canada P.O. Box 5163, Denver, Colorado 80217 USA Europe, Middle East and Africa Technical Support: Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada Phone: 421 33 790 2910 Fax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada Japan Customer Focus Center For additional information, please contact your Email: [email protected] Phone: 81-3-5773-3850 local Sales Representative ©2010 SCILLC. All rights reserved. April 2010 – Rev. 2 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit Publication Order Number: CM1225/D