PRELIMINARY
CM1215
1-, 2- and 4-Channel Low Capacitance ESD Arrays
Features
•
•
•
•
•
•
•
•
•
1, 2, and 4 channels of ESD protection
Provides
+
15 kV ESD protection on each channel
per the IEC 61000-4-2 ESD requirements
Channel loading capacitance of 1.6 pF typical
Channel I/O to GND capacitance difference of
0.04pF typical
Mutual capacitance of 0.13pF typical
Minimal capacitance change with temperature and
voltage
Each I/O pin can withstand over 1000 ESD strikes
SOT packages
Lead-free versions available
Product Description
The CM1215 family of diode arrays has been designed
to provide ESD protection for electronic components or
sub-systems 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 neg-
ative ESD current pulse to either the positive (V
P
) or
negative (V
N
) supply rail. The CM1215 will protect
against ESD pulses up to
+
15kV per the IEC 61000-4-2
standard.
This device is particularly well-suited for protecting sys-
tems using high-speed ports such as USB2.0,
IEEE1394 (Firewire
®
, iLink
™
), Serial ATA, DVI, HDMI
and 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 CM1215 family of devices is available with
optional lead-free finishing.
Applications
•
•
•
•
•
IEEE1394 Firewire
®
ports at 400Mbps / 800Mbps
DVI ports, HDMI ports in notebooks, set top boxes,
digital TVs, LCD displays
Serial ATA ports in desktop PCs and hard disk
drives
PCI Express ports
General purpose high-speed data line ESD protec-
tion
Simplified Electrical Schematic
V
P
V
P
CH4
V
P
CH3
CH1
CH1
CH2
V
N
CM1215-01ST/SO
V
N
CM1215-02ST/SO
CM1215-02SS/SR
CH1
V
N
CH2
CM1215-04ST/SO
©
2005 California Micro Devices Corp. All rights reserved.
06/30/05
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
1
PRELIMINARY
CM1215
PACKAGE / PINOUT DIAGRAM
Top View
CH1
1
V
N
Top View
1
4
Top View
V
P
NC
V
N
1
2
3
5
Top View
V
P
CH1
V
N
CH2
CH2
1
6
CH4
V
P
CH3
D152 /
E152
D151 /
E151
2
D154 /
E154
D152 /
E152
3
V
N
CH1
2
2
3
5
4
V
P
3
CH2
CH1
4
3-Pin SOT23-3
4-Pin SOT143
5-Lead SOT23-5
6-pin SOT23-6
Note: These drawings are not to scale.
Pin Configuration
PACKAGE PIN DESCRIPTIONS
PIN
NAMER
CH1
V
N
CH2
CH3
V
P
CH4
N/C
SOT23-3
PIN NO.
SOT143
PIN NO.
SOT23-5
PIN NO.
SOT23-6
PIN NO.
TYPE
DESCRIPTION
ESD Channel
Negative voltage supply
rail
ESD Channel
ESD Channel
Positive voltage supply rail
ESD Channel
No Connection
1
3
−
−
2
−
−
2
1
3
−
4
−
−
3
2
4
−
5
−
1
1
2
3
4
5
6
−
I/O
GND
I/O
I/O
PWR
I/O
−
Ordering Information
PART NUMBERING INFORMATION
Standard Finish
Pins
3
4
5
6
Package
SOT23-3
SOT143
SOT23-5
SOT23-6
Ordering Part
Number
1
CM1215-01ST
CM1215-02SS
CM1215-02ST
CM1215-04ST
Part Marking
D151
D152
D152
D154
Lead-free Finish
Ordering Part
Number
1
CM1215-01SO
CM1215-02SR
CM1215-02SO
CM1215-04SO
Part Marking
E151
E152
E152
E154
©
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
06/30/05
PRELIMINARY
CM1215
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Operating Supply Voltage (V
P
-V
N
)
Diode Forward DC Current (Note 1)
DC Voltage at any Channel Input
Operating Temperature Range
Ambient
Junction
Storage Temperature Range
-40 to +85
-40 to +125
-40 to +150
°C
°C
°C
RATING
6
20
(V
N
-0.5) to (V
P
+0.5)
UNITS
V
mA
V
STANDARD OPERATING CONDITIONS
PARAMETER
Temperature Range (Ambient)
Package Power Rating
SOT23-3 Package (CM1215-01ST/SO)
SOT143 Package (CM1215-02SS/SR)
SOT23-5 Package (CM1215-02ST/SO)
SOT23-6 Package (CM1215-04ST/SO)
RATING
-40 to +85
225
225
225
225
UNITS
°C
mW
mW
mW
mW
©
2005 California Micro Devices Corp. All rights reserved.
06/30/05
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
3
PRELIMINARY
CM1215
Specifications (cont’d)
ELECTRICAL OPERATING CHARACTERISTICS
NOTE 1
SYMBOL
V
P
I
P
V
F
PARAMETER
Operating Supply Voltage (V
P
-V
N
)
Operating Supply Current
Diode Forward Voltage
Top Diode
Bottom Diode
Channel Leakage Current
Channel Input Capacitance
(V
P
-V
N
) = 3.3V
I
F
= 20mA; T
A
= 25°C
0.6
0.6
0.8
0.8
±0.1
1.6
CONDITIONS
MIN
TYP
3.3
MAX
5.5
8
0.95
0.95
±1.0
2.0
UNIT
V
μA
V
V
μA
pF
I
LEAK
C
IN
T
A
= 25°C; V
P
= 5V,
V
N
= 0V
At 1 MHz, V
P
= 3.3V,
V
N
= 0V, V
IN
= 1.65V;
Note2
Note 2
(V
P
-V
N
) = 3.3V; Note 2
Notes 2, 3, and 4;
T
A
= 25°C
±15
ΔC
IN
C
MUTUAL
V
ESD
Channel I/O to GND Capacitance
Difference
Mutual Capacitance
ESD Protection
Peak Discharge Voltage at any
channel input, in system, contact
discharge per IEC 61000-4-2
standard
Channel Clamp Voltage
Positive Transients
Negative Transients
Dynamic Resistance
Positive transients
Negative transients
0.04
0.13
pF
pF
kV
V
CL
I
PP
= 1A, t
P
= 8/20μS;
T
A
=25°C; Notes 2
I
PP
= 1A, t
P
= 8/20μS;
T
A
= 25°C;
Notes 2
V
P
+1.5
V
N
-1.5
0.4
0.4
V
V
Ω
Ω
R
DYN
Note 1:
Note 2:
Note 3:
Note 4:
All parameters specified at T
A
= -40°C to +85°C unless otherwise noted.
These parameters guaranteed by design and characterization.
Standard IEC 61000-4-2 with C
Discharge
= 150pF, R
Discharge
= 330
Ω
, V
P
= 3.3V, V
N
grounded.
From I/O pins to V
P
or V
N
only. V
P
bypassed to V
N
with low ESR 0.2μF ceramic capacitor.
©
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
06/30/05
PRELIMINARY
CM1215
Performance Characteristics
Input Channel Capacitance Performance Curve
2.000
1.800
1.600
1.400
1.200
1.000
0.800
0.600
0.400
0.200
0.000
0.00
0.50
1.00
1.50
1.65
2.00
2.50
3.00
Bias Voltage (V)
Figure 1. Typical Variation of C
IN
vs. V
IN
(f = 1MHz, V
P
= 3.3V, V
N
= 0V, 0.1μF chip capacitor between V
P
and V
N
, T
A
= 25
°
C)
Capacitance (pF)
Figure 2. Typical Filter Performance (nominal conditions unless
specified otherwise, 50 Ohm Environment
©
2005 California Micro Devices Corp. All rights reserved.
06/30/05
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
5
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