2005 California Micro Devices Corp. All rights reserved.
02/07/05
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.calmicro.com
1
CM2020
HDMI Transmitter Port Protection and Interface Device
Features
0.05pF matching capacitance between the TMDS
intra-pair
Overcurrent output protection
Level shifting circuitry, including
8kV
ESD protec-
tion on all TMDS lines
Matched 0.5mm trace spacing (TSSOP)
Simplified layout for HDMI connectors
Backdrive protection
Applications
PC
Consumer Electronics
Set Top Box
Displays and Digital Television
Product Description
The CM2020 HDMI Transmitter Port Protection and
Interface Device is specifically designed for next gen-
eration HDMI Host 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 part is specifically designed to comple-
ment the CM2021 protection part in HDMI receivers
(Displays, CE devices, etc.)
The CM2020 also incorporates a silicon overcurrent
protection device for +5V supply voltage output to the
connector.
Electrical Schematic
TMDS_CK+
TMDS_GND
TMDS_CK-
TMDS_D2+
TMDS_GND
TMDS_D2-
TMDS_D1+
TMDS_GND
TMDS_D1-
TMDS_D0+
TMDS_GND
TMDS_D0-
TMDS_VDD
CE_REMOTE_OUT
CE_REMOTE_IN
DDC_CLK_OUT
DDC_CLK_IN
DDC_DAT_OUT
DDC_DAT_IN
HOTPLUG_DET_OUT
HOTPLUG_DET_IN
3.3V SUPPLY
TMDS_VDD
3.3V SUPPLY
TMDS_VDD
3.3V SUPPLY
TMDS_VDD
3.3V SUPPLY
TMDS_VDD
5V_OUT
5V_SUPPLY
75mA
OVERCURRENT
SWITCH
5V_SUPPLY
2005 California Micro Devices Corp. All rights reserved.
2
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.calmicro.com
02/07/05
CM2020
PIN DESCRIPTIONS
PINS
NAME
DESCRIPTION
37
TMDS_VDD
TMDS ESD diodes biased from 5V_SUPPLY through internal diode.
4
TMDS_D2+
TMDS 0.9pF ESD protection.
33
TMDS_D2-
TMDS 0.9pF ESD protection.
7
TMDS_D1+
TMDS 0.9pF ESD protection.
30
TMDS_D1-
TMDS 0.9pF ESD protection.
10
TMDS_D0+
TMDS 0.9pF ESD protection.
27
TMDS_D0-
TMDS 0.9pF ESD protection.
13
TMDS_CK+
TMDS 0.9pF ESD protection.
24
TMDS_CK-
TMDS 1pF ESD protection.
16
CE_REMOTE_IN
3.3V_SUPPLY referenced logic level in.
23
CE_REMOTE_OUT
5V_SUPPLY referenced logic level out plus 4pF ESD.
17
DDC_CLK_IN
3.3V_SUPPLY referenced logic level in.
22
DDC_CLK_OUT
5V_SUPPLY referenced logic level out plus 4pF ESD.
18
DDC_DAT_IN
3.3V_SUPPLY referenced logic level in.
21
DDC_DAT_OUT
5V_SUPPLY referenced logic level out plus 4pF ESD.
19
HOTPLUG_DET_IN
3.3V_SUPPLY referenced logic level in.
20
HOTPLUG_DET_OUT
5V_SUPPLY referenced logic level out plus 4pF ESD.
2
3.3V_SUPPLY
Bias for CE / DDC / HOTPLUG level shifters.
1
5V_SUPPLY
Current source for 5V_OUT.
38
5V_OUT
75mA minimum overcurrent protected 5V output.
3, 5, 8, 11, 14, 25,
28, 31, 34, 36
GND / TMDS_GND
GND reference.
6, 9, 12,15, 26, 29, 32, 35
NC
No Connect.
PACKAGE / PINOUT DIAGRAM
Note: This drawing is not to scale.
38-PIN TSSOP PACKAGE
1
2
3
4
5
6
7
8
30
29
28
27
31
32
9
10
34
33
35
36
11
12
37
38
TMDS_GND
NC
TMDS_D1+
TMDS_GND
NC
TMDS_D0+
TMDS_GND
NC
5V_SUPPLY
3.3V_SUPPLY
GND
TMDS_D2+
TMDS_VDD
GND
NC
TMDS_GND
TMDS_D2-
NC
TMDS_GND
TMDS_D1-
NC
TMDS_GND
TMDS_D0-
5V_OUT
13
14
26
25
NC
TMDS_GND
TMDS_CK+
TMDS_GND
TOP VIEW
24
23
22
15
16
17
NC
CE_REMOTE_IN
DDC_CLK_IN
TMDS_CK-
CE_REMOTE_OUT
DDC_CLK_OUT
18
19
21
20
DDC_DAT_OUT
HOTPLUG_DET_OUT
DDC_DAT_IN
HOTPLUG_DET_IN
2005 California Micro Devices Corp. All rights reserved.
02/07/05
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.calmicro.com
3
CM2020
Ordering Information
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
Specifications
Note 1: Only one diode conducting at a time.
PART NUMBERING INFORMATION
Pins
Package
Standard Finish
Lead-free Finish
Ordering Part
Number
1
Part Marking
Ordering Part
Number
1
Part Marking
38
TSSOP-38
CM2020-00TS
CM2020-00TS
CM2020-00TR
CM2020-00TR
ABSOLUTE MAXIMUM RATINGS
PARAMETER
RATING
UNITS
V
CC5
, V
CC3
6.0
V
ESD Clamp Diode Forward DC Current (Note 1)
8
mA
DC Voltage at any Channel Input
[GND - 0.5] to [VCC + 0.5]
V
Storage Temperature Range
-65 to +150
C
Operating Temperature Range
-40 to +85
C
STANDARD (RECOMMENDED) OPERATING CONDITIONS
SYMBOL
PARAMETER
MIN
TYP
MAX
UNITS
5V_SUPPLY
Operating Supply Voltage
5
5.5
V
3.3V_SUPPLY
Bias Supply Voltage
1
3.3
5.5
V
2005 California Micro Devices Corp. All rights reserved.
4
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.calmicro.com
02/07/05
CM2020
Specifications (cont'd)
ELECTRICAL OPERATING CHARACTERISTICS
(SEE NOTE 1)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
CC5
Operating Supply Current
5V_SUPPLY = 5.0V
100
110
130
A
I
CC3
Bias Supply Current
3.3V_SUPPLY = 3.3V
1
5
A
V
DROP
5V_OUT Overcurrent Output
Drop
5V_SUPPLY= 5.0V,
I
OUT
=55mA
65
100
mV
I
SC
5V_OUT Short Circuit Current
Limit
5V_SUPPLY= 5.0V,
5V_OUT = GND
90
135
175
mA
I
OFF
OFF state leakage current,
level shifting NFET
3.3V_SUPPLY
=
0V
0.1
5
A
I
BACKDRIVE
Current conducted from output
pins to V_SUPPLY rails when
powered down
5V_SUPPLY
< V
CH_OUT
;
Signal pins: TMDS_[2:0]+/-,
TMDS_CK+/-, CE_REMOTE_OUT,
DDC_DAT_OUT, DDC_CLK_OUT,
HOTPLUG_DET_OUT, 5V_OUT
Only
0.1
5
A
V
ON
VOLTAGE drop across level
shifting NFET when ON
3.3V_SUPPLY = 2.5V, V
S
= GND,
I
DS
= 3mA
75
95
140
mV
V
F
Diode Forward Voltage
Top Diode
Bottom Diode
I
F
= 8mA, T
A
= 25C, Note 2
0.6
0.6
0.85
0.85
0.95
0.95
V
V
V
ESD
ESD Withstand Voltage (IEC)
Pins 4, 7, 10, 13, 20, 21, 22, 23, 24,
27, 30, 33; Notes 2 and 3
8
kV
V
ESD
ESD Withstand Voltage
(HBM)
Pins 1, 2, 16, 17, 18, 19, 37, 38;
Notes 2 and 4
2
kV
V
CL
Channel Clamp Voltage @
8kV HBM ESD
Positive Transients
Negative Transients
T
A
= 25C, Notes 2 and 4
9.0
-9.0
V
V
R
DYN
Dynamic Resistance
Positive Transients
Negative Transients
I = 1A, T
A
= 25C, Note 5
3.0
1.5
I
LEAK
TMDS Channel Leakage Cur-
rent
T
A
= 25C, Note 2
0.01
1
A
C
IN,
TMDS
TMDS Channel Input
Capacitance
5V_SUPPLY= 5.0V,
Measured at 1MHz,
V
BIAS
=2.5V, Note 2
0.9
1.2
p
F
C
IN,
TMDS
C
IN
Matching Capacitance
5V_SUPPLY= 5.0V,
Measured at 1MHz,
V
BIAS
=2.5V, Note 2, 6
0.05
p
F
C
MUTUAL
Mutual Capacitance between
signal pin and NC pin
5V_SUPPLY= 0V,
Measured at 1MHz,
V
BIAS
=2.5V, Note 2
0.07
p
F
2005 California Micro Devices Corp. All rights reserved.
02/07/05
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.calmicro.com
5
CM2020
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, C
DISCHARGE
=150pF, R
DISCHARGE
=330
.
Note 4: Human Body Model per MIL-STD-883, Method 3015, C
DISCHARGE
=100pF, R
DISCHARGE
=1.5k
Note 5: These measurements performed with no external capacitor on TMDS_VDD.
Note 6: Intra-pair matching, each TMDS pair (i.e. D+, D-)
C
IN,
DDC
Level Shifting Input Capaci-
tance, Capacitance to GND
5V_SUPPLY= 0V,
Measured at 100KHz,
V
BIAS
=2.5V, Note 2
4
6
p
F
C
IN,
CEC
Level Shifting Input Capaci-
tance, Capacitance to GND
5V_SUPPLY= 0V,
Measured at 100KHz,
V
BIAS
=2.5V, Note 2
4
6
p
F
C
IN,
HP
Level Shifting Input Capaci-
tance, Capacitance to GND
5V_SUPPLY= 0V,
Measured at 100KHz,
V
BIAS
=2.5V, Note 2
4
6
p
F
ELECTRICAL OPERATING CHARACTERISTICS
(SEE NOTE 1)
PDF 
ZIP