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2010.4 - Rev.D

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IC Card Interface ICs

IC Card Interface ICs

with Built-in Low Noise LDO Regulator

BD8918F,BD8918FV,BD8919F,BD8919FV

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Overview

This is an interface IC for a 5V smart card.

It works as a bidirectional signal buffer between a smart card and a controller. Also, it supplies 5V power to a smart card.

With an electrostatic breakdown voltage of more than HBM; ±6000V, it protects the card contact pins.

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Features

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 for card power source

5) Built-in thermal shutdown circuit

6) Built-in supply voltage detector

7) Automatic activation/deactivation sequence function for card contact pin

Activation sequence: driven by a signal from controller (CMDVCCB)

Deactivation sequence: driven by a signal from controller (CMDVCCB) and fault detection (card removal, short

circuit of card power, IC overheat detection, VDD or VDDP drop)

8) Card contact pin ESD voltage ≧ ±6000V

9) Recommend frequency of crystal oscillator: 8MHz (BD8918F/FV), 16MHz (BD8919F/FV)

10) Programmable for card clock division of output signal: 1/1 and 1/2(BD8918F/FV), 1/2 and 1/4(BD8919F/FV).

11) RST output control by RSTIN input signal (positive output)

12) One multiplexed card status output by OFFB signal

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Applications

Interface for CLASS A smart cards

Interface for B-CAS cards

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Line up matrix

Part No

Card clock

Ratio of dividing frequency

Package

BD8918F

1/1f, 1/2f

SOP16

BD8918FV

SSOP-B16

BD8919F

1/2f, 1/4f

SOP16

BD8919FV

SSOP-B16

No.09056EDT01