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HDMI Transmitter Port Protection and Interface Device CM2020-01TR
Features
* * * * * * * * * HDMI 1.3 compliant 0.05pF matching capacitance between the TMDS intra-pair Overcurrent output protection Level shifting/isolation circuitry 8kV ESD protection on all external lines Matched 0.5mm trace spacing (TSSOP) Simplified layout for HDMI connectors Backdrive protection RoHS-compliant, lead-free packaging
Product Description
The CM2020-01TR HDMI Transmitter Port Protection and Interface Device is specifically designed for next generation HDMI Source interface protection. An integrated package provides all ESD, level shift, overcurrent output protection and backdrive protection for an HDMI port in a single 38-Pin TSSOP package. The CM2020-01TR part is specifically designed to complement the CM2021 protection part in HDMI receivers (displays, DTV, CE devices, etc.). The CM2020-01TR also incorporates a silicon overcurrent protection device for +5V supply voltage output to the connector.
Applications
* * * * PC Consumer electronics Set top box DVD/RW players
(c)2010 SCILLC. All rights reserved. May 2010 - Rev. 4
Publication Order Number: CM2020-01TR/D
CM2020-01TR
Rev. 4 | Page 2 of 12 | www.onsemi.com
CM2020-01TR
PIN DESCRIPTIONS
PINS 4, 35 6, 33 7, 32 9, 30 10, 29 12, 27 13, 26 15, 24 16 23 17 22 18 21 19 20 2 1 38 37 3, 36 5, 34, 8, 31, 11, 28, 14, 25 NAME TMDS_D2+ TMDS_D2- TMDS_D1+ TMDS_D1- TMDS_D0+ TMDS_D0- TMDS_CK+ TMDS_CK- CE_REMOTE_IN CE_REMOTE_OUT DDC_CLK_IN DDC_CLK_OUT DDC_DAT_IN DDC_DAT_OUT HOTPLUG_DET_IN HOTPLUG_DET_OUT LV_SUPPLY 5V_SUPPLY 5V_OUT ESD_BYP GND TMDS_GND ESD Level 8kV 8kV 8kV 8kV 8kV 8kV 8kV 8kV 2kV 8kV 2kV 8kV 2kV 8kV 2kV 8kV 2kV 2kV 8kV 2kV
2
DESCRIPTION TMDS 0.9pF ESD protection. TMDS 0.9pF ESD protection. TMDS 0.9pF ESD protection. TMDS 0.9pF ESD protection. TMDS 0.9pF ESD protection. TMDS 0.9pF ESD protection. TMDS 0.9pF ESD protection. TMDS 0.9pF ESD protection.
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
3
LV_SUPPLY referenced logic level into ASIC. 5V_SUPPLY referenced logic level out plus 3.5pF ESD to connector. LV_SUPPLY referenced logic level into ASIC. 5V_SUPPLY referenced logic level out plus 3.5pF ESD to connector. LV_SUPPLY referenced logic level into ASIC. 5V_SUPPLY referenced logic level out plus 3.5pF ESD to connector. LV_SUPPLY referenced logic level into ASIC. 5V_SUPPLY referenced logic level out plus 3.5pF ESD to connector. Bias for CE / DDC / HOTPLUG level shifters. Current source for 5V_OUT. 55mA minimum overcurrent protected 5V output. This output must be bypassed with a 0.1 F ceramic capacitor. This pin may be connected to a 0.1 F ceramic capacitor, but it is not necessary. Supply GND reference. TMDS ESD and Parasitic GND return.
4
2
3
2
3
2
3
2
3
3
2
3
N/A N/A
Note 1: These 2 pins need to be connected together in-line on the PCB. Note 2: Standard IEC 61000-4-2, CDISCHARGE=150pF, RDISCHARGE=330, 5V_SUPPLY and LV_SUPPLY within recommended operating conditions, GND=0V, 5V_OUT (pin 38), each bypassed with a 0.1F ceramic capacitor connected to GND. Note 3: Human Body Model per MIL-STD-883, Method 3015, CDISCHARGE=100pF, RDISCHARGE=1.5k, 5V_SUPPLY and LV_SUPPLY within recommended operating conditions, GND=0V and 5V_OUT (pin 38), and each bypassed with a 0.1F ceramic capacitor connected to GND. Note 4: These pins should be routed directly to the associated GND pins on the HDMI connector with single point ground vias at the connector.
Rev. 4 | Page 3 of 12 | www.onsemi.com
CM2020-01TR
Backdrive Protection
Below, two scenarios are discussed to illustrate what can happen when a powered device is connected to an unpowered device via an HDMI interface, substantiating the need for backdrive protection on this type of interface. In the first example a DVD player is 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 bulk supply capacitance associated with it. Because all CMOS logic exhibits a very high impedance on the power rail node when "off," if there may be very little parasitic shunt resistance, and even with as little as a few milliamps of "backdrive" current flowing into the power rail, it is possible over time to charge that bulk supply capacitance to some intermediate level. If this level rises above the power-on-reset (POR) voltage level of some of the integrated circuits in the DVD player, these devices may not reset properly when the DVD player is turned back on. In a more serious scenario, if any SOC devices are incorporated in the design which have built-in level shifter and DRC diodes for ESD protection, there is even a risk for permanent damage. In this case, if there is a pullup resistor (such as with DDC) on the other end of the cable, that resistance will pull the SOC chips "output" up to a high level. This will forward bias the upper ESD diode in the DRC and charge the bulk capacitance in a similar fashion as described in the first example. If this current flow is high enough, even as little as a few milliamps, it could destroy one of the SOC chip's internal DRC diodes as they are not designed for passing DC. To avoid either of these situations, the CM2020-01TR was designed to block backdrive current, guaranteeing no more than 5mA on any I/O pin when the I/O pin voltage is greater than the CM2020-01TR supply voltage.
Figure 1. Backdrive Protection Diagram
Rev. 4 | Page 4 of 12 | www.onsemi.com
CM2020-01TR
Ordering Information
PART NUMBERING INFORMATION
Lead-free Finish Pins 38 Package TSSOP-38 Ordering Part Number CM2020-01TR
1
Part Marking CM2020-01TR
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER VCC5V, VCCLV DC Voltage at any Channel Input Storage Temperature Range RATING 6.0 6.0 -65 to +150 UNITS V V C
STANDARD (RECOMMENDED) OPERATING CONDITIONS
SYMBOL 5V_SUPPLY LV_SUPPLY PARAMETER Operating Supply Voltage Bias Supply Voltage Operating Temperature Range MIN GND 1 -40 TYP 5 3.3 MAX 5.5 5.5 85 UNITS V V C
Rev. 4 | Page 5 of 12 | www.onsemi.com
CM2020-01TR
ELECTRICAL OPERATING CHARACTERISTICS (1)
SYMBOL ICC5V ICCLV VDROP PARAMETER Operating Supply Current Bias Supply Current 5V_OUT Overcurrent Output Drop 5V_OUT Short Circuit Current Limit OFF state leakage current, level shifting NFET Current conducted from output pins to V_SUPPLY rails when powered down CONDITIONS 5V_SUPPLY = 5.0V LV_SUPPLY = 3.3V 5V_SUPPLY= 5.0V, IOUT=55mA 5V_SUPPLY= 5.0V, 5V_OUT = GND LV_SUPPLY=0V 5V_SUPPLY < VCH_OUT; Signal pins: TMDS_D[2:0]+/-, TMDS_CK+/-, CE_REMOTE_OUT, DDC_DAT_OUT, DDC_CLK_OUT, HOTPLUG_DET_OUT, 5V_OUT Only CE-REMOTE_IN = CE_SUPPLY < CE_REMOTE_OUT LV_SUPPLY = 2.5V, VS = GND, IDS = 3mA IF = 8mA, TA = 25 C 0.6 0.6 Pins 4, 7, 10, 13, 20, 21, 22, 23, 24, 27, 30, 33, 38; Note 2 TA = 25 IPP = 1A, tP = 8/20s; C, Note 3 TA = 25 IPP = 1A, tP = 8/20s; C, Notes 3 0.85 0.85 0.95 0.95 V V kV 75 90 MIN TYP 110 1 65 MAX 130 5 100 UNITS A A mV
ISC IOFF IBACKDRIVE
135 0.1 0.1
175 5 5
mA
A
A
IBACKDRIVE, CEC
Current through CE-REMOTE_OUT when powered down VOLTAGE drop across level shifting NFET when ON Diode Forward Voltage Top Diode Bottom Diode ESD Withstand Voltage: Contact discharge per IEC 610004-2 Standard Channel Clamp Voltage Positive Transients Negative Transients Dynamic Resistance Positive Transients Negative Transients TMDS Channel Leakage Current TMDS Channel Input Capacitance
0.1
1
A
VON
95
140
mV
VF
VESD
8
VCL
11.0 -2.0 1.2 0.9 0.01 1
V V
RDYN
A
ILEAK
TA = 25 C
CIN, TMDS
5V_SUPPLY= 5.0V, Measured at 1MHz, VBIAS=2.5V
0.9
1.2
pF
Rev. 4 | Page 6 of 12 | www.onsemi.com
CM2020-01TR
SYMBOL PARAMETER TMDS Channel Input Capacitance Matching CONDITIONS 5V_SUPPLY= 5.0V, Measured at 1MHz, VBIAS=2.5V; Note 4 5V_SUPPLY= 5V, Measured at 100KHz, VBIAS=2.5V MIN TYP 0.05 MAX UNITS pF
C
IN,
TMDS
CIN, DDC
Level Shifting Input Capacitance, Capacitance to GND
3.5
4
pF
CIN, CEC
Level Shifting Input Capacitance, Capacitance to GND
5V_SUPPLY= 5V, Measured at 100KHz, VBIAS=2.5V
3.5
4
pF
CIN, HP
Level Shifting Input Capacitance, Capacitance to GND
5V_SUPPLY= 5V, Measured at 100KHz, VBIAS=2.5V
3.5
4
pF
Note 1: Operating Characteristics are over Standard Operating Conditions unless otherwise specified. Note 2: Standard IEC 61000-4-2, CDISCHARGE=150pF, RDISCHARGE=330, 5V_SUPPLY and LV_SUPPLY within recommended operating conditions, GND=0V, 5V_OUT (pin 38), each bypassed with a 0.1F ceramic capacitor connected to GND. Note 3: These measurements performed with no external capacitor on ESD_BYP. Note 4: Intra-pair matching, each TMDS pair (i.e. D+, D-).
Rev. 4 | Page 7 of 12 | www.onsemi.com
CM2020-01TR
Performance Information
Typical Filter Performance (TA=25 DC Bias=0V, 50 Ohm Environment) C,
Figure 2. Insertion Loss vs. Frequency (TMDS_D1- to GND)
Rev. 4 | Page 8 of 12 | www.onsemi.com
CM2020-01TR
Application Information
Figure 3. Typical Application for CM2020-01TR
Rev. 4 | Page 9 of 12 | www.onsemi.com
CM2020-01TR
Application Information (cont'd)
Design Considerations 5V Overcurrent Output Maximum Overcurrent Protection output drop at 55mA on 5V_OUT is 100mV. To meet HDMI output requirements of 4.8-5.3V, an input of greater than 4.9V should be used (i.e. 5.1V 4%). A 0.1 F ceramic bypass capacitor on this output is also recommended. Hotplug Detect Input To meet the requirements of HDMI CTS TID7-12, the following pullup/pulldown configuration is recommended for a 3.3V 10% internal VCC rail (See Figure 4 below). A 0.1F ceramic capacitor is recommended for additional edge debounce and ESD bypass. DUT On vs. DUT Off Many HDMI CTS tests require a power off condition on the System Under Test. Many Dual Rail Clamp (DRC) ESD diode configurations will be forward biased when their VDD rail is lower than the I/O pin bias, thereby exhibiting extremely high apparent capacitance measurements, for example. The MediaGuardTM backdrive isolation circuitry limits this current to <5A, and will help ensure compliance.
Figure 4. Design Example
Rev. 4 | Page 10 of 12 | www.onsemi.com
CM2020-01TR
Mechanical Details
TSSOP-38 Mechanical Specifications CM2020-01TR devices are supplied in 38-pin TSSOP packages. Dimensions are presented below. For complete information on the TSSOP-38, see the California Micro Devices TSSOP Package Information document.
PACKAGE DIMENSIONS
Package JEDEC No. Pins Dimensions Millimeters Min A A1 b c D E E1 e L # per tape and reel -- 0.05 0.17 0.09 9.60 Max 1.20 0.15 0.27 0.20 9.80 Min -- 0.002 0.007 0.004 0.378 TSSOP MO-153 (Variation BD-1) 38 Inches Max 0.047 0.006 0.011 0.008 0.386
6.40 BSC 4.30 4.50
0.252 BSC 0.169 0.177
0.50 BSC 0.45 0.75
0.020 BSC 0.018 0.030
2500 pieces
Package Dimensions for TSSOP-38
Controlling dimension: millimeters
Rev. 4 | Page 11 of 12 | www.onsemi.com
CM2020-01TR
Tape and Reel Specifications
PACKAGE SIZE (mm) 9.70 X 6.40 X 1.20 POCKET SIZE (mm) B0 X A0 X K0 10.20 X 6.90 X 1.80 TAPE WIDTH W 16mm REEL DIAMETER 330mm (13") QTY PER REEL 2500
PART NUMBER CM2020-01TR
P0 4mm
P1 12mm
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.
PUBLICATION ORDERING INFORMATION
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Rev. 4 | Page 12 of 12 | www.onsemi.com

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