(China (Mainland))
Product Summary
The PBL3764A/4R2 Subscriber Line Interface Circuit (SLIC) is a bipolar integrated circuit in 75 V technology which replaces the conventional transformer based analog line interface circuit in PABX and other telecommunications equipment with a modern, compact solid state design. Not only is required PCB area reduced, but lesser component weight and height result as well. The PBL3764A/4R2 has been optimized for low cost and to require only a minimum of external components. The PBL3764A/4R2 programmable, constant-current feed system can operate with battery supply voltages down to 24 V to reduce line card power dissipation. The PBL3764A/4R2 package is 22-pin, dual-in-tine, 28-pin j-leaded chip carrier or 32-pin leadless chip carrier.
Parametrics
PBL3764A/4R2 absolute maximum ratings: (1)Storage temperature range: -60 to +150℃; (2)Operating temperature range: -40 to +110℃; (3)Operating junction temperature range: -40 to +140℃; (4)Storage humidity, Note 1: 5 to 95% RH; (5)Continuous power dissipation at TAmb < 70℃: 1.5W; (6)Peak power dissipation at TAmb> = 70℃ f t < 100 ms, tRep > 1 sec: 4W; (7)Input voltage: VBat to 0V; (8)Input current: -5 to 5mA.
Features
PBL3764A/4R2 features: (1)Battery feed characteristics programmable via external resistors; feed characteristics independent of SLIC battery supply variations; (2)Battery supply voltage as low as 24 V for power efficient line card designs; (3)Ring relay driver; (4)Loop current, ground key and ring trip detection functions Programmable loop current detector threshold; (5)Hybrid function with all types of CODEC/filter devices Programmable line terminating impedance, complex or real On-hook transmission; (6)Longitudinal balance specifications in excess of FCC and EIA requirements; (7)Low 21 mW on-hook power dissipation; (8)Tip-ring open circuit state for subscriber loop power denial; (9)-40℃ to +85℃ ambient temperature range.
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