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Supplied in 20-lead, 3 x 3 x 0.75 mm QFN package, LTC4558EUD is dual subscriber identity module (SIM) and Smart Card power supply IC with level translator that provides 1.8 and 3 V SIM power and digital signal level shifting. Channel select pin determines which channel is open for communication, while separate enable pins allow both cards to be powered at once. Features include automatic level translation and automatic activation/deactivation sequencing circuitry.
MILPITAS, CA - February 13, 2007 - Linear Technology announces the LTC4558, a dual subscriber identity module (SIM) and Smart Card power supply IC with level translator that …