1) 1 half duplex bidirectional buffers 2) Protection against short-circuit for all the card contact pins 3) 5V power source for the card (VCC) 4) Over-current protection .

Interface for CLASS A smart cards Interface for B-CAS cards
*Line up matrix Part No BD8918F BD8918FV BD8919F BD8919F.

Pin No. Pin Name 1 2 3 XTAL1 XTAL2 VDD I/O I O S Signal Level VDD VDD VDD Pin Function Crystal connection or input for external clock Technical Note www.DataSheet4U.com Crystal connection (leave open pin when external clock source is used) 3.3 V po.

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