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L7591 Datasheet Subscriber Line Interface Circuit Protector

Manufacturer: Lucent Technologies

Overview: Data Sheet October 1997 L7591 Subscriber Line Interface Circuit.

Datasheet Details

Part number L7591
Manufacturer Lucent Technologies
File Size 159.24 KB
Description Subscriber Line Interface Circuit Protector
Download L7591 Download (PDF)

General Description

s Shunts lightning pulses to ground — Positive or negative 30 A, 10 x 1000 µs — Positive or negative 40 A, 5 x 320 µs — Positive or negative 80 A, 2 x 10 µs s Power-cross protection — 3.5 APEAK, 50 Hz to 60 Hz, 1 s — 5.0 APEAK, 50 Hz to 60 Hz, 10 ms s Gate trigger current, 15 mA max s Up to –80 V capability s Holding current, 150 mA min Pin Information The L7591 Subscriber Line Interface Circuit (SLIC) Protector is designed to protect line-feed circuitry from fault-induced lightning and power-cross surge pulses.

If a fault current forces TIP and/or RING to a more negative voltage than VS, current is conducted through the trip circuit.

When the specified trip current level is reached, transistors PNPN1 and/or PNPN2 will turn on and "crowbar" the majority of the current to ground.