LTC1755
PRODUCTIONSmart Card Interface
- Part Models
- 2
- 1ku List Price
- Starting From $4.31
Overview
- 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
The LTC1755/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.
Applications
- Handheld Payment Terminals
- Pay Telephones
- Key Chain Readers
- Smart Card Readers
Documentation
Data Sheet 1
Reliability Data 1
Technical Articles 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC1755EGN#PBF | 24-Lead SSOP (Narrow 0.15 Inch) | ||
| LTC1755EGN#TRPBF | 24-Lead SSOP (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking |
||
| LTC1755EGN#PBF | PRODUCTION | |
| LTC1755EGN#TRPBF | PRODUCTION | |
|
Aug 10, 2022 - 22_0177 Laser Top Mark Conversion for QSOP20_24_28 Assembled in ADPG [PNG] and UTL |
||
| LTC1755EGN#PBF | PRODUCTION | |
| LTC1755EGN#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.