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TDK Semiconductor debuts three smart card interface circuits: the TDK 73S8023C, 73S8024C, and the 73S8010C. These chips possess efficiency of 85% and a small size step-up/step-down converter that provides high card current capability for such card interfaces, with up to 100 mA supplied to the card. A power down mode is implemented that allows the host to place the smart card interface function in a mode that will only draw a couple of mA. Such features make these circuits suited for battery powered and power sensitive applications, such as portable Point-of-Sales terminals, PIN-pad readers, and payphones, as well as any portable smart card based payment or indentation device, such as cell phones and Personal Digital Assistants (PDAs).

TDK Semiconductor Corp.

TDK Semiconductor Corp.
http://www.tdksemiconductor.com