DESCRIPTION
The LTC®1755/LTC1756 universal Smart Card interfaces are fully compliant with ISO 7816-3 and EMV specifications. The parts provide the smallest and simplest interface circuits between a host microcontroller and general purpose Smart Cards.

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 (LTC1755)
■ Very Low Operating Current: 60µA
■ >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: <1µA
■ Short-Circuit and Overtemperature Protected
■ Alarm Output Indicates Fault Condition
■ Multiple Devices May Be Paralleled for Multicard Applications (LTC1755)
■ Available in 16- and 24-Pin SSOP Packages

APPLICATIONS
■ Handheld Payment Terminals
■ Pay Telephones
■ ATMs
■ Key Chain Readers
■ Smart Card Readers