ONSEMI CM2021-02TR

HDMI Receiver Port Protection
and Interface Device
CM2021-02TR
Features
Product Description
•
•
The CM2021-02TR HDMI Receiver Port Protection
and Interface Device is specifically designed for next
generation HDMI Host interface protection.
An integrated package provides all ESD, level shift
and backdrive protection for an HDMI port in a single
38-Pin TSSOP package.
The CM2021-02TR part is specifically designed to
complement the CM2020 protection part in HDMI
transmitters (DVD, STB/OPVR, etc.).
•
•
•
•
•
•
HDMI 1.3 compliant
0.05pF matching capacitance between the TMDS
intra-pair
Level shifting/isolation circuitry
Provides ESD protection to IEC61000-4-2
Level 4:
±8kV contact discharge
±15kV air discharge
Matched 0.5mm trace spacing (TSSOP)
Simplified layout for HDMI connectors
Backdrive protection
RoHS-compliant, lead-free packaging
Applications
•
•
•
PC
Consumer electronics
Displays and digital television
©2010 SCILLC. All rights reserved.
May 2010 – Rev. 3
Publication Order Number:
CM2021-02TR/D
CM2021-02TR
Electrical Schematic
Rev. 3 | Page 2 of 12 | www.onsemi.com
CM2021-02TR
PIN DESCRIPTIONS
PINS
NAME
ESD Level
4, 35
TMDS_D2+
8kV
2
TMDS 0.9pF ESD protection.
1
6, 33
TMDS_D2–
8kV
2
TMDS 0.9pF ESD protection.
1
7, 32
TMDS_D1+
8kV
2
TMDS 0.9pF ESD protection.
1
9, 30
TMDS_D1–
8kV
2
TMDS 0.9pF ESD protection.
1
10, 29
TMDS_D0+
8kV
2
TMDS 0.9pF ESD protection.
1
12, 27
TMDS_D0–
8kV
2
TMDS 0.9pF ESD protection.
1
13, 26
TMDS_CK+
8kV
2
TMDS 0.9pF ESD protection.
1
15, 24
TMDS_CK–
8kV
2
TMDS 0.9pF ESD protection.
1
16
CE_REMOTE_IN
2kV
3
LV_SUPPLY referenced logic level into ASIC.
23
CE_REMOTE_OUT
8kV
2
5V_SUPPLY referenced logic level out plus 3.5pF ESD to
connector.
17
DDC_CLK_IN
2kV
3
LV_SUPPLY referenced logic level into ASIC.
5V_SUPPLY referenced logic level out plus 3.5pF ESD to
connector.
DESCRIPTION
22
DDC_CLK_OUT
8kV
2
18
DDC_DAT_IN
2kV
3
LV_SUPPLY referenced logic level into ASIC.
5V_SUPPLY referenced logic level out plus 3.5pF ESD to
connector.
21
DDC_DAT_OUT
8kV
2
19
HOTPLUG_DET_IN
2kV
3
LV_SUPPLY referenced logic level into ASIC.
5V_SUPPLY referenced logic level out plus 3.5pF ESD to
connector.
20
HOTPLUG_DET_OUT
8kV
2
2
LV_SUPPLY
2kV
3
Bias for CE / DDC / HOTPLUG level shifters.
1
5V_SUPPLY
2kV
3
Current source for 5V_OUT.
3
This pin may be connected to a 0.1 F ceramic capacitor, but it is not
necessary.
37
ESD_BYP
2kV
5, 34, 8, 31,
11, 28, 14,
25
TMDS_GND
N/A
TMDS ESD and Parasitic GND return.
3, 36
GND
N/A
Supply GND reference.
38
NC
N/A
No connect.
4
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=330Ω, 5V_SUPPLY and LV_SUPPLY within recommended
operating conditions, GND=0V, each bypassed with a 0.1µF ceramic capacitor connected to GND.
Note 3: Human Body Model per MIL-STD-883, Method 3015, CDISCHARGE=100pF, RDISCHARGE=1.5kΩ, 5V_SUPPLY and LV_SUPPLY
within recommended operating conditions, GND=0V, and each bypassed with a 0.1µF 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. 3 | Page 3 of 12 | www.onsemi.com
CM2021-02TR
Backdrive Protection
Two scenarios below describe what can happen when a powered device is connected to an unpowered device
via an HDMI interface, substantiating the need for backdrive protection for this type of interface.
In a classic scenario, 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 is very little
parasitic shunt resistance and as little as a few milliamps of “backdrive” current flowing back 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 higher risk for 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 like above. If the 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 CM2021-02TR is designed to block backdrive current, guaranteeing no
more than 5µA on any I/O pin when the I/O pin voltage is greater than the CM2021-02TR supply voltage.
Figure 1. Backdrive Protection Diagram
Rev. 3 | Page 4 of 12 | www.onsemi.com
CM2021-02TR
Ordering Information
PART NUMBERING INFORMATION
Lead-free Finish
Pins
Package
Ordering Part Number
Part Marking
38
TSSOP-38
CM2021-02TR
CM2021-02TR
1
Note 1: Parts are shipped in Tape and Reel form unless otherwise specified.
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER
RATING
UNITS
VCC5V, VCCLV
6.0
V
DC Voltage at any Channel Input
6.0
V
–65 to +150
ûC
Storage Temperature Range
STANDARD (RECOMMENDED) OPERATING CONDITIONS
SYMBOL
PARAMETER
MIN
TYP
MAX
UNITS
5V_SUPPLY
Operating Supply Voltage
GND
5
5.5
V
LV_SUPPLY
Bias Supply Voltage
1
3.3
5.5
V
85
ûC
Operating Temperature Range
Rev. 3 | Page 5 of 12 | www.onsemi.com
–40
CM2021-02TR
(SEE NOTE 1)
ELECTRICAL OPERATING CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
ICC5V
Operating Supply Current
ICCLV
TYP
MAX
UNITS
5V_SUPPLY = 5.0V
110
130
µA
Bias Supply Current
LV_SUPPLY = 3.3V
1
5
µA
IOFF
OFF state leakage current,
level shifting NFET
LV_SUPPLY = 0V
0.1
5
µA
IBACKDRIVE
Current conducted from
output pins to V_SUPPLY
rails when powered down
5V_SUPPLY VCH_OUT;
Signal pins: TMDS_[2:0]+/–,
TMDS_CK+/–, CE_REMOTE_OUT,
DDC_DAT_OUT, DDC_CLK_OUT,
HOTPLUG_DET_OUT Only
0.1
5
µA
CE-REMOTE_IN = CE_SUPPLY <
CE_REMOTE_OUT
0.1
1
µA
75
95
140
mV
0.6
0.6
0.85
0.85
0.95
0.95
V
V
IBACKDRIVE, CEC
VON
VOLTAGE drop across level
shifting NFET when ON
LV_SUPPLY = 2.5V, VS = GND,
IDS = 3mA
VF
Diode Forward Voltage
Top Diode
Bottom Diode
IF = 8mA, TA = 25ûC;
Note 2
VESD
ESD Withstand Voltage (IEC)
Pins 4, 7,10,13, 20, 21, 22, 23, 24,
27, 30, 33;
Notes 2 and 3
VCL
Channel Clamp Voltage
Positive Transients
Negative Transients
TA = 25ûC, IPP = 1A, tP = 8/20µs;
Notes 2 and 4
Dynamic Resistance
Positive Transients
Negative Transients
TA = 25ûC, IPP = 1A, tP = 8/20µs;
Notes 2 and 4
TMDS Channel Leakage
Current
TA = 25ûC;
Note 2
0.01
1
µA
TMDS Channel Input
Capacitance
5V_SUPPLY = 5.0V,
Measured at 1MHz,
VBIAS=2.5V;
Note 2
0.9
1.2
pF
TMDS Channel Input
Capacitance Matching
5V_SUPPLY = 5.0V,
Measured at 1MHz,
VBIAS=2.5V;
Notes 2 and 5
0.05
RDYN
ILEAK
CIN, TMDS
∆C
Current through
CE-REMOTE_OUT when
powered down
MIN
IN,
TMDS
Rev. 3 | Page 6 of 12 | www.onsemi.com
kV
8
11.0
–2.0
V
V
1.2
0.9
Ω
Ω
pF
CM2021-02TR
SYMBOL
PARAMETER
CONDITIONS
CIN, DDC
Level Shifting Input
Capacitance, Capacitance to
GND
CIN, CEC
CIN, HP
MIN
TYP
MAX
UNITS
5V_SUPPLY = 5V,
Measured at 100KHz,
VBIAS=2.5V;
Note 2
3.5
4
pF
Level Shifting Input
Capacitance, Capacitance to
GND
5V_SUPPLY = 5V,
Measured at 100KHz,
VBIAS=2.5V;
Note 2
3.5
4
pF
Level Shifting Input
Capacitance, Capacitance to
GND
5V_SUPPLY = 5V,
Measured at 100KHz,
VBIAS=2.5V;
Note 2
3.5
4
pF
Note 1: Operating characteristics are over standard operating conditions unless otherwise specified.
Note 2: This parameter is guaranteed by design and verified by device characterization.
Note 3: Standard IEC 61000-4-2, CDISCHARGE=150pF, RDISCHARGE=330Ω, 5V_SUPPLY and LV_SUPPLY within recommended
operating conditions, GND=0V, each bypassed with a 0.1µF ceramic capacitor connected to GND.
Note 4: These measurements performed with no external capacitor on ESD_BYP.
Note 5: Intra-pair matching, each TMDS pair (i.e. D+, D–)
Rev. 3 | Page 7 of 12 | www.onsemi.com
CM2021-02TR
Performance Information
Typical Filter Performance (TA=25ûC, DC Bias=0V, 50 Ohm
Environment)
Figure 2. Insertion Loss vs. Frequency (TMDS_D1– to GND)
Rev. 3 | Page 8 of 12 | www.onsemi.com
CM2021-02TR
Application Information
DCEC
Figure 3. Typical Application for CM2021-02TR
Rev. 3 | Page 9 of 12 | www.onsemi.com
CM2021-02TR
Application Information
Design Considerations
1. 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 MediaGuard backdrive
isolation circuitry limits this current to less than 10 A, and will help ensure HDMI compliance.
2. EEPROM Configurations
The EDID EEPROM may be connected to either the ASIC LV domain or Connector 5V domain of the CM2021.
See the MediaGuard EEPROM Application Note for further circuit connection and layout examples.
Figure 4. Design Example
Rev. 3 | Page 10 of 12 | www.onsemi.com
CM2021-02TR
Mechanical Details
TSSOP-38 Mechanical Specifications
CM2021-02TR 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
TSSOP
JEDEC No.
MO-153 (Variation BD-1)
Pins
38
Dimensions
Millimeters
Inches
Min
Max
Min
Max
A
—
1.20
—
0.047
A1
0.05
0.15
0.002
0.006
b
0.17
0.27
0.007
0.011
c
0.09
0.20
0.004
0.008
D
9.60
9.80
0.378
0.386
E
E1
e
L
# per tape
and reel
6.40 BSC
4.30
0.252 BSC
4.50
0.50 BSC
0.45
0.169
0.177
0.020 BSC
0.75
0.018
0.030
2500 pieces
Controlling dimension: millimeters
Package Dimensions for TSSOP-38
Rev. 3 | Page 11 of 12 | www.onsemi.com
CM2021-02TR
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
CM2021-02TR
9.70 X 6.40 X 1.20
10.20 X 6.90 X 1.80
16mm
330mm (13")
2500
4mm
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
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada
Fax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada
Email: [email protected]
N. American Technical Support: 800-282-9855
Toll Free USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81-3-5773-3850
Rev. 3 | Page 12 of 12 | www.onsemi.com
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative