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| Product Brief June 2000 L7581/2/3 and L8581 Ringing, Tip/Ring, and Line Card Access Switches Features s s s s s s s Description The L7581/8581 provides solid-state access for power ringing applications. The L7582 provides access for power ringing and line test. The L7583 line card access switch (LCAS) provides power ringing, line test, and self-test access. Incorporated into the L758xA is a diode bridge/SCR clamping circuit, current-limiting circuitry, and thermal shutdown mechanism. The L758xB provides a diode bridge clamping circuit, current-limiting circuitry, and thermal shutdown mechanism. A single external protection device is required. Lucent Technologies has available characterized protection devices designed to work with Lucent LCAS devices (contact a Lucent Technologies account representative for information about these products). Lucent LCAS devices require a 5 V supply to operate. Additionally, a battery monitor circuit is included, which forces an all-off state if the battery is lost. The L7581 device is packaged in a 16-pin, plastic DIP package (L7581AC/BC) and a 16-pin, plastic SOG package (L7581AAE/BAE). These devices are pin compatible with the L7541 device. The L7582 device is packaged in a 16-pin, plastic DIP package (L7582AC/BC) and a 16-pin, plastic SOG package (L7582AAE/BAE). The L7582AAE/BAE are pin compatible with the L7542AAE/BAE. The L7583A/B/C/D device is packaged in a 24-pin, plastic DIP (L7583AF/BF/CF/DF) and a 28-pin, plastic SOG package (L7583AAJ/BAJ/CAJ/DAJ). Small size/surface-mount packaging Monolithic IC reliability Low impulse noise Make-before-break, break-before-make operation Clean, bounce-free switching Low, matched ON resistance Built-in current limiting, thermal shutdown, and SLIC protection 5 V only operation, very low power consumption Battery monitor, all OFF state upon loss of battery No EMI Latched logic level inputs, no drive circuitry Only one external protector required s s s s s Applications s s s s s Central office DLC PBX DAML HFC/FITL L7581/2/3 and L8581 Ringing, Tip/Ring, and Line Card Access Switches Product Brief June 2000 Application VBAT (REFERENCE) RINGING TEST RETURN SW5 SW9 TEST OUT R1 TIP SW7 RINGING RETURN SW3 BREAK SW1 TEST IN TIP CROWBAR PROTECTION SCR AND TRIP CKT BATTERY FEED BREAK SW4 RING R2 SW10 TEST OUT SW8 RINGING ACCESS SW6 RINGING TEST SW2 TEST IN RING RING GENERATOR BATTERY 12-2366d F For additional information, contact your Microelectronics Group Account Manager or the following: INTERNET: http://www.lucent.com/micro E-MAIL: docmaster@micro.lucent.com N. AMERICA: Microelectronics Group, Lucent Technologies Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA PACIFIC: Microelectronics Group, Lucent Technologies Singapore Pte. Ltd., 77 Science Park Drive, #03-18 Cintech III, Singapore 118256 Tel. (65) 778 8833, FAX (65) 777 7495 CHINA: Microelectronics Group, Lucent Technologies (China) Co., Ltd., A-F2, 23/F, Zao Fong Universe Building, 1800 Zhong Shan Xi Road, Shanghai 200233 P. R. China Tel. (86) 21 6440 0468, ext. 325, FAX (86) 21 6440 0652 JAPAN: Microelectronics Group, Lucent Technologies Japan Ltd., 7-18, Higashi-Gotanda 2-chome, Shinagawa-ku, Tokyo 141, Japan Tel. (81) 3 5421 1600, FAX (81) 3 5421 1700 EUROPE: Data Requests: MICROELECTRONICS GROUP DATALINE: Tel. (44) 7000 582 368, FAX (44) 1189 328 148 Technical Inquiries: GERMANY: (49) 89 95086 0 (Munich), UNITED KINGDOM: (44) 1344 865 900 (Ascot), FRANCE: (33) 1 40 83 68 00 (Paris), SWEDEN: (46) 8 594 607 00 (Stockholm), FINLAND: (358) 9 4354 2800 (Helsinki), ITALY: (39) 02 6608131 (Milan), SPAIN: (34) 1 807 1441 (Madrid) Lucent Technologies Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. Copyright (c) 2000 Lucent Technologies Inc. All Rights Reserved June 2000 PB00-074ALC (Replaces PN98-107ALC, PN98-108ALC, and PN99-008ALC) |
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