LC01-6_04 SEMTECH [Semtech Corporation], LC01-6_04 Datasheet - Page 4

• Manufacturer Part Number: LC01-6_04
• Description: Low Capacitance TVS for High-Speed Telecommunication Systems
• Manufacturer: SEMTECH [Semtech Corporation]

LC01-6
PROTECTION PRODUCTS
Applications Information
Device Connection Options for Protection of High-
Speed Data Lines
The LC01-6 is designed to protect high-speed data
lines from transient over-voltages which result from
lightning and ESD. The device is designed to protect
one line pair in differential (Line-to-Line) mode. Pins 1-
8 are connected to line 1 and pins 9-16 are connected
to line 2 as shown. All pins should be connected for
best results.
T1/E1 Linecard Protection
A typical long-haul T1/E1 linecard protection circuit is
Figure 1 - Schematic and Pin Configuration
shown below. The LC01-6 is connected between Tip
and Ring on the transmit and receive line pairs. It
provides protection to metallic (line-to-line) lightning
surges per Bellcore 1089 and FCC Part 68. Depending
on the application, a high voltage crowbar device (not
shown) such as a gas discharge tube (GDT) or TVS
Thyristor may be used to suppress common mode (line-
to-ground) surges. To complete the protection circuit,
the SRDA05-4 (or SRDA3.3-4 for 3.3V supplies) is
employed as the secondary IC side protection element.
This device helps prevent the transceiver from latching
up by providing fine clamping of transients that are
coupled through the transformer. Positive temperature
coefficient (PTC) resistors or fuses are also required for
AC power cross protection. For further information,
reference Semtech application note AN97-10.
Figure 2 - Connection for Differential Protection
(Line-to-Line)
www.semtech.com
2004 Semtech Corp.
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