Description L8576B electronic dual subscriber line interface circ
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L8576B Dual Ringing SLIC
Description
L8576B electronic dual subscriber line interface circuit (SLIC) provides functions that necessary interface codec Ring subscriber loop, integrating battery feeds ringing generators low-cost package. L8576B device optimized meet needs short loop, customer premises applications features balanced ringing from single battery supply. device built using complementary bipolar (CBIC) process. available 44-pin PLCC package.
SLIC channels multiple Tip/Ring interfaces On-chip balanced ringing generator, ring relay required Single battery operation optional automatic battery switch Quiet battery reversal on-hook signaling Disconnect state Distortion-free, on-hook transmission loop current limiter Ring-trip detector Switchhook detector Immune channel crosstalk impulse noise Allows rail overvoltages ease protection Thermal protection 44-pin, surface-mount, plastic package (PLCC)
Applications
POTS ISDN Terminal adapters (TA) Digital loop carrier (DLC) systems PABX
L8576B Dual Ringing SLIC
Architectural Diagram
BGND AGND VBAT
POWER CONDITIONING REFERENCE
RTTH RTFLT RECTIFIER CONDITIONING VITR RCVN RCVP DCOUT
BATTERY FEED STATE CONTROL RNGNG NDISC RPWR DCOUT LOOP CLOSURE DETECTOR NSTAT
IPROG
CURRENT LIMIT CIRCUIT
12-3362(F).b
additi onal info ation, contact your Microelectronics Group ount Manager followi http://www.lucent.com/micro INTERNET: docmaster@micro.lucent.com E-MAIL: AMERICA: Microelectronics Grou Lucent Technologies Inc., Union Boul evard, Room 30L-15 P-BA, Allent 18103 1-800-372-2447, 610-712-4106 CANADA: 1-800-553-2448, 610-712-4106) ASIA PACIFIC: Microelectronics Grou Lucent Technologies Singapore Ltd., Science Park Drive, #03-18 Cintech 118256 Singa Tel. (65) 8833, (65) 7495 CHINA: Micr oelectronics Group, Lucent Technolog (China) Co., A-F2, 23/F, Fong Univers Building, 1800 Zhong Shan Road, Shanghai 200233 China Tel. (86) 6440 0468, ext. 316, (86) 6440 0652 JAPAN: Micr oelectronics Group, Lucent Technolog Japan 7-18, Higashi-Gotanda 2-chome, Shinagawa-ku, Tokyo 141, Japan Tel. (81) 5421 1600, (81) 5421 1700 Tel. (44) 1189 299, (44) 1189 EUROPE: Data Requ ests: MICROELECTRONICS GROUP DATALINE: (49) 95086 (Munich), UNITED KINGDOM:(44) 1344 (Ascot), Technical Inquiries: GERMANY: (358) 4354 2800 (Helsin ki), FRANCE: (33) (Pari SWEDEN: (46) 7070 (Sto ckholm), FINLAND: ITALY: (39) 6608131 (Milan), SPAIN: (34) 1441 (Madrid)
Lucent Techn ologies right make chan roduct formation ontain rein with outo liability assum heir applicatio tice. rights unde tent ompa such roduct formation.
Copyright 1998 Luce Technologie Inc. Rights
September 1998 PN98-204ALC
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