The LC03- 6 ON Semiconductor's device is a TVS Diode
array designed to protect sensitive electronics such as
communications systems, computers, and computer
peripherals against damage due to transient overvoltage
conditions caused by lightning, electrostatic discharge
(ESD), and electrical fast transients (EFT). Because of its
relative low capacitance (<25 pf), it can be used in high speed
I/O data lines such as USB 1.1 ports.
The integrated design of the LC03-6 device offers high
surge rating, low capacitance steering diodes, and a TVS
diode integrated in a single package (SO-8). In addition, this
device offers compliance to Bellcore 1089 requirements
(intra-building).
LC03-6 Device's Configurations Options
Protection of Two High-speed I/O Data Lines
If differential protection is required by some particular
applications, then the configuration for differential protection
is made as shown in the Figure 6:
LC03-6
Line 1
In
Line 1
Out
N/C
N/C
N/C
N/C
Line 2
In
Line 2
Out
Figure 6. Configuration for Differential
Protection (Line-to-Line)
T1/E1 Linecard Protection (Intra-Building)
The LC03-6 device is able to protect two high speed data
lines against transient overvoltage conditions by driving
them to a fixed reference point for clamping purposes.
Depending in the application's requirements, the LC03-6
device can be configured for protection in either differential
mode (Line-to-Line) or common mode (Line-to-ground).
The Figure 5 shows the connection for Differential mode
(Line-to-Line) and Common mode (Line-to-Ground)
protection. The inputs and outputs of the I/O data lines are
connected at terminals 1 to 8, and 4 to 5 while the terminals
2, 3, 6 and 7 are connected to ground; for better performance,
it is recommended to minimize parasitic inductances by
using ground planes and minimizing the PCB trace lengths
for the ground return connections.
LC03-6
Line 1
In
Line 1
Out
The Figure 7 shows a typical schematic for a T1/E1 line
card protection circuit. The LC03- 6 device is connected
between Tip and Ring on the transmit and receive line pairs.
it provides protection to metallic and common mode lightning
surges per Bellcore 1089 intra- building (For further
information, see Bellcore 1089 standard). A metallic voltage
is defined as a difference of potential between the T and R
terminals of a telecommunications pair. Currents caused by
lightning, in the absence of protector operation and with
balanced terminal equipment and telecommunications loop,
cause Tip and Ring conductors to attain the same potential
hence do not produce metallic transients. Common mode
surges are suppressed by the isolation of the transformer.
Line 2
In
Line 2
Out
Figure 5. Configuration for Differential
and Common Mode Protection
http://onsemi.com
3
LC03-6R2
PTC
R1
RTIP
R3
R2
RRING
T1/E1
TRANSCEIVER
R4
TTIP
LC03-6
R5
TRING
T2
PTC
PTC
T1
PTC
LC03-6
Figure 7. Typical T1 Line Card Protection
ESD Protection in USB 1.1 Port Applications
As we know, a USB port is composed of four lines. The
lines D+ and D- are used for bi-directional data
transmission, and the remaining two lines are reserved for
bus voltage and ground. Since USB is a hot plugging and
unplugging system, all its four lines have the risk to receive
ESD conditions in the real field of the application.
Typical ESD protection techniques are commonly formed
by the combination of different discrete semiconductor
products which make this technique obsolete and
non-ef ficient because the interconnections of the discrete
devices increase the parasitic inductance effects during a
transient condition which reduces significantly the
performance of the ESD protection circuit. The LC03-6
device provides a unique TVS Diode array designed to
protect two I/O data lines (single USB port) against damage
due to ESD conditions or transient voltage conditions.
Because of its low capacitance, it can be used in high speed
I/O data lines such as USB 1.1 components. In addition to its
low capacitance characteristics, the LC03-6 device from
ON Semiconductor complies with the most common
industrial standards for ESD, EFT and surge protection:
IEC61000-4-2, IEC61000-4-4, IEC61000-4-5.
http://onsemi.com
4
LC03-6R2
PACKAGE DIMENSIONS
SOIC-8 NB
CASE 751-07
ISSUE AH
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
6. 751-01 THRU 751-06 ARE OBSOLETE. NEW
STANDARD IS 751-07.
MILLIMETERS
MIN
MAX
4.80
5.00
3.80
4.00
1.35
1.75
0.33
0.51
1.27 BSC
0.10
0.25
0.19
0.25
0.40
1.27
0
_
8
_
0.25
0.50
5.80
6.20
INCHES
MIN
MAX
0.189
0.197
0.150
0.157
0.053
0.069
0.013
0.020
0.050 BSC
0.004
0.010
0.007
0.010
0.016
0.050
0
_
8
_
0.010
0.020
0.228
0.244
-X-
A
8
5
B
1
4
S
0.25 (0.010)
M
Y
M
-Y-
G
C
-Z-
H
D
0.25 (0.010)
M
SEATING
PLANE
K
N
X 45
_
0.10 (0.004)
M
Z Y
S
J
X
S
DIM
A
B
C
D
G
H
J
K
M
N
S
SOLDERING FOOTPRINT*
1.52
0.060
7.0
0.275
4.0
0.155
0.6
0.024
1.270
0.050
SCALE 6:1
mm
inches
*For additional information on our Pb-Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
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: orderlit@onsemi.com
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
ON Semiconductor Website: www.onsemi.com
Order Literature:
http://www.onsemi.com/orderlit
For additional information, please contact your local
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
