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Optocouplers with reinforced-insulation construction

Posted: 23 Dec 2004 ?? ?Print Version ?Bookmark and Share

Keywords:vishay intertechnology? optocoupler? sfh67xxt?

Vishay Intertechnology Inc. rolled out a new series of 10MBd optocouplers in an SOIC-8 packaged rated for operating temperatures up to 100C.

According to the company, the new SFH67xxT optocouplers feature a reinforced-insulation construction combining a highly efficient input LED with an integrated optical photodiode IC detector optimized for applications requiring high data rates such as communication bus lines, high-speed A/D and D/A converters, digital control power supplies, industrial controller I/O interfaces, and scan driver IC interfaces for plasma display panels.

Along with a typical speed of 10MBd and operating temperature range of -40C to 100C, the new optocouplers feature CMR values up to 10,000V/?s, typical pulse-width distortion (PWD) of 2.9ns, typical propagation delay (tPHL) of 50ns, and fast rise and fall times of 23ns and 7ns, respectively.

The 10MBd optocouplers deliver improved output leakage current performance thanks to their NMOS open drain output structure, said Vishay. In addition, they provide a higher isolation replacement for signal isolation transformers, as well as noise immunity and diminished electromagnetic interference by reducing potential ground loops in electronic equipment.

The six new products are available in a standard SOIC-8 package with reinforced insulation per IEC60950 and eight pure tin leads. Three are configured with a single channel and three with dual channels, with each configuration offering a choice of CMR values of 100V/?s, 5,000V/?s or 10,000V/?s. The single-channel devices also feature an enable function on the seventh pin for strobing the detector.

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