BD8904F Datasheet, PDF (1/16 Pages) Rohm – IC card interface ICs with Built-in DC / DC Converter

IC Card Interface ICs
IC card interface ICs
with Built-in DC / DC Converter
BD8904F, BD8904FV, BD8905F, BD8906F, BD8906FV, BD8907F
No.09056EAT02
●Overview
BD8904F, BD8904FV, BD8905F, BD8906F, BD8906FV and BD8907F are an interface IC for a 3V or 5V smart card.
It works as a bidirectional signal buffer between a smart card and a controller. Also, it supplies 3V or 5V power to a smart
card. With electrostatic breakdown voltage of more than HBM: ±6000V, it protects the card contact pins.
●Features
1) 3 half duplex bidirectional buffers
2) Protection against short-circuit for all the card contact pins
3) Card power source (VREG) of 3V or 5V
4) Overcurrent protection for card power source
5) Built-in thermal shutdown circuit
6) Built-in supply voltage detector
7) Automatic start-up/shutdown sequence function for card contact pin
Start-up sequence: driven by a signal from controller (CMDVCCB↓)
Shutdown 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) 2MHz - 26MHz integrated crystal oscillator
10) Programmable for clock division of output signal by 1, 1/2, 1/4, and 1/8
11) RST output control by RSTIN input signal (positive output)
12) One multiplexed card status output by OFFB signal
●Line up matrix
Part No.
BD8904F
BD8904FV
BD8905F
BD8906F
BD8906FV
BD8907F
Resistor to set VDD
voltage detector
External
External
External
Built-in
Built-in
Built-in
Input Voltage
VDD
VDDP
2.7V - 5.5V 3.0V - 5.5V
2.7V - 5.5V 3.0V - 5.5V
2.7V - 5.5V 3.0V - 5.5V
3.0V - 5.5V 3.0V - 5.5V
3.0V - 5.5V 3.0V - 5.5V
3.0V - 5.5V 3.0V - 5.5V
Operating
temperature
-40°C - +85°C
-40°C - +85°C
-25°C - +85°C
-25°C - +85°C
-25°C - +85°C
-40°C - +85°C
Package
SOP28
SSOP-B28
SOP28
SOP28
SSOP-B28
SOP28
●Application
Interface for smart cards
Interface for B-CAS cards
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
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2009.07 - Rev.A