LTC1756 Smart Card Interface

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.

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. Internal soft-start mitigates start-up problems that may result when the input power is provided by another regulator. Multiple devices may be paralleled and connected to a single controller for multicard applications.

Battery life is maximized by 60µA operating current and 1µA shutdown current. The narrow SSOP packages minimize PCB area for compact portable systems

产品特点 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 (LTC1756)
  • Available in 16- and 24-Pin SSOP Packages
应用
  • Handheld Payment Terminals
  • Pay Telephones
  • Key Chain Readers
  • Smart Card Readers
典型应用图
LTC1756 典型应用
参数
LTC1756 参数
LTC1756 订购信息和价格参考Package Variations and Pricing
器件型号 封装 引脚 温度 价格 (以 1 ~ 99 片为批量) 价格 (以 1000 片为批量) *
LTC1756EGN SSOP 16 E $2.95  $2.55 
LTC1756EGN#PBF SSOP 16 E $2.95  $2.55 
LTC1756EGN#TR SSOP 16 E $2.65 
LTC1756EGN#TRPBF SSOP 16 E $2.65 
LTC1756 数据手册及相关资料下载
  1. 数据手册(英文) : LTC1755/LTC1756 - Smart Card Interface.PDF
  2. 可靠性数据 : R384 Reliability Data .PDF