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LTC1755

Features: `Fully ISO 7816-3 and EMV Compliant (Including Auxiliary I/O Pins)`Buck-Boost Charge Pump Generates 3V or 5V`2.7V to 6.0V Input Voltage Range`Very Low Operating Current: 60A`>10kV ESD on All Smart Card Pins`Dynamic Pull-Ups Deliver Fast Signal Rise Times`Soft Start Limits Inrush Curre...

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SeekIC No. : 004401887 Detail

LTC1755: Features: `Fully ISO 7816-3 and EMV Compliant (Including Auxiliary I/O Pins)`Buck-Boost Charge Pump Generates 3V or 5V`2.7V to 6.0V Input Voltage Range`Very Low Operating Current: 60A`>10kV ESD o...

LTC1755 Data Sheet

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Part Number:
LTC1755
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

`Fully ISO 7816-3 and EMV Compliant (Including Auxiliary I/O Pins)
`Buck-Boost Charge Pump Generates 3V or 5V
`2.7V to 6.0V Input Voltage Range
`Very Low Operating Current: 60A
`>10kV ESD on All Smart Card Pins
`Dynamic Pull-Ups Deliver Fast Signal Rise Times
`Soft Start Limits Inrush Current at Turn On
`3V 5V Signal Level Translators
`Shutdown Current: <1A
`Short-Circuit and Overtemperature Protected
`Alarm Output Indicates Fault Condition
`Multiple Devices May Be Paralleled for Multicard Applications
`Available in 24-PinSSOP Package


Application

·Handheld Payment Terminals
·Pay Telephones
·ATMs
·Key Chain Readers
·Smart Card Readers


Pinout

Connection Diagram


Specifications

VIN to GND ................................................... 0.3V to 6.5V
DVCC, VCC to GND ........................................ 0.3V to 5.5V
Digital Inputs to GND .................... 0.3V to (DVCC + 0.3V)
CLK, RST, I/O, AUX1,
AUX2 to GND...................................... 0.3V to VCC + 0.3V
VCC Short-Circuit Duration ................................... Indefinite
Operating Temperature Range (Note 2) ....40°C to 85°C
Storage Temperature Range .................. 65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................... 300°C


Description

The LTC®1755 universal Smart Card interface is fully compliant with ISO 7816-3 and EMV specifications. It provides the smallest and simplest interface circuit between a host microcontroller and general purpose Smart Cards.

An internal charge pump DC/DC converter delivers regulated 3V or 5V to the Smart Card, while on-chip level shifters allow connection to a low voltage controller. All Smart Card contacts are rated for 10kV ESD, eliminating the need for external ESD protection devices.

Input voltage may range from 2.7V to 6.0V, allowing direct connection to a battery. Automatic DC/DC converter soft start mitigates start-up problems that may result when the input power is provided by another regulator. Multiple LTC1755 devices may be paralleled and connected to a single controller for multicard applications.

Battery life is maximized by 60mA operating current and 1mA shutdown current. The 24-pin SSOP package minimizes PCB area for compact portable systems.




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