Application Design Center - T1/T3 Line Driver

Protection of T3 / E3 / DS3 Ports

Solutions

• P0642SA
• P0640EC
• P0640SC MC
• P0720EC
• P0720SC MC
• 0461.500
• 04611.25

Design Notes:

Protection Application:

T3 / E3 / DS3 lines are concentrated digital phone lines with bit rates of up to 45 Mbps. The data signals are low voltage (~5V).

Solution Description:

Two options are shown. The top is aGR-1089 Inter-building solution that employs a TeleLink fuse, a SIDACtor and two MURS163T diodes (ON Semiconductor). The lower solution is a GR-1090 Intra-building solution using TeleLink fuse and a SIDACtor.

Companion Solutions:

Other voltage SIDACtor devices are available for specific designs.

Regulatory Issues:

This solution is designed to comply with Telcordia‘s GR-1089.

Unique Features:

Littelfuse is the only vendor offering the low capacitance P0642SA device.

Application Warnings:

Does not apply .