ST8024LTR

Specialized Overview

The ST8024LTR is a smart card interface integrated circuit manufactured by STMicroelectronics, belonging to the ST8024L series. It serves as a complete low-cost analog interface for asynchronous 3V and 5V smart cards. The device features an integrated 26 MHz crystal oscillator and supports clock generation for cards up to 20 MHz through division signals. It provides supply supervision, enhanced ESD protection exceeding 6 kV on the card side, and thermal/short-circuit protection. The IC handles current spikes up to 40 nA at 20 MHz and includes filtered overload detection at approximately 120 mA. It is designed for ISO 7816, GSM11.11, and EMV compatibility.

Specialized Feature Summary

• Integrated 26 MHz crystal oscillator with flexible clock division capabilities for smart card synchronization
• Enhanced electrostatic discharge (ESD) protection on card contacts exceeding 6 kV
• Built-in supply supervisor for power-on reset and spike-killing during power transitions
• Thermal and short-circuit protection on all card contact lines

Specialized Applications

• Smartcard readers for set-top boxes
• IC card readers for banking applications
• Identification system readers
• Pay TV terminal interfaces

Specialized Procurement Notes

Verify the specific suffix 'LTR' against the official STMicroelectronics datasheet to confirm package type and tape-and-reel specifications. Ensure the ordering code matches the required industrial temperature range and RoHS compliance status. Cross-reference the part number with authorized distributors to confirm availability and authenticity before procurement.

Specialized Selection Notes

Select the ST8024LTR when designing systems requiring direct replacement for the ST8004 or when a complete analog interface solution is needed. It is suitable for applications demanding high ESD immunity and simplified external component counts. Consider its compatibility with NDS conditional access systems if deploying secure payment or identification terminals.

Specialized Part Context

The ST8024LTR is part of the ST8024L family of smart card interface ICs from STMicroelectronics. This series is engineered to bridge microcontrollers and smart cards, handling supply protection and control functions. It replaces older models like the ST8004 and supports both 3V and 5V asynchronous smart card protocols in a compact surface-mount package.

Specialized Replacement Considerations

The ST8024 is documented as a direct replacement for the ST8004. Verify pinout compatibility and electrical characteristics before substituting other legacy smart card interface ICs.