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LH1539AAC Datasheet(PDF) 1 Page - Vishay Siliconix |
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LH1539AAC Datasheet(HTML) 1 Page - Vishay Siliconix |
1 / 6 page Document Number: 83832 For technical questions, contact: optocoupleranswers@vishay.com www.vishay.com Rev. 1.4, 11-Mar-11 1 This datasheet is subject to change without notice. THE PRODUCT DESCRIBED HEREIN AND THIS DATASHEET ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 1 Form A Photo Darlington Telecom Switch LH1539AAC, LH1539AACTR, LH1539AB Vishay Semiconductors DESCRIPTION The LH1539 telecom switch consists of an optically isolated solid state relay (SSR) form A and a bidirectional input optocoupler in a single 8-pin package. The SSR is ideal for switch hook and dial-pulse switching while the optocoupler performs ring detect and loop current sensing functions. Both the SSR and optocoupler provide 5300 VRMS of input-to-output isolation voltage. The SSR is integrated on a monolithic receptor die using smart power technology. The SSR features low On resistance, high breakdown voltage, and current-limit circuitry that protects the relay from telephone line induced lightning surges. The optocoupler provides bidirectional current sensing via two anti parallel GaAs infrared emitting diodes. Very high current transfer ratio (CTR) is achieved by coupling to a photodarlington transistor. This high CTR allows the user to minimize the size of the ring detector capacitor. FEATURES • Solid state relay and autopolarity optocoupler in one 8-pin package • Isolation test voltage 5300 VRMS • Surface mountable • Optocoupler - Bidirectional current detection - High CTR: 300 % • Solid state relay - Form A LH1525 type - Low operating current - Typical RON 25 - Load voltage 400 V - Load current 120 mA - Current limit protection - Linear, AC/DC operation - Clean bounce free switching - Low power consumption • Compliant to RoHS Directive 2002/95/EC and in accordance to WEEE 2002/96/EC APPLICATIONS • General telecom switching - On/off hook switching - Dial pulse - Ring current detection - Loop current sensing i179055-1 8 6 1 3 7 5 2 4 i179034_2 DIP SMD AGENCY APPROVALS UL1577: file no. E52744 system code H, double protection CSA: certification no. 093751 BSI/BABT: certification no. 7980 ORDERING INFORMATION L H 1539 A # # T R PART NUMBER ELECTR. VARIATION PACKAGE CONFIG. TAPE AND REEL PACKAGE UL, CSA, BSI SMD-8, gullwing, tubes LH1539AAC SMD-8, gullwing, tape and reel LH1539AACTR DIP-8, tubes LH1539AB > 0.1 mm 7.62 mm DIP SMD |
Similar Part No. - LH1539AAC_11 |
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Similar Description - LH1539AAC_11 |
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