ST8024LACTR

Specialized Overview

The ST8024LACTR is a smart card interface IC designed to minimize microprocessor hardware and software complexity in applications requiring smart cards. It supports asynchronous Class A, B, and C smart cards with supply voltages of 1.8 V, 3 V, or 5 V. The device features a 26 MHz integrated crystal oscillator and handles clock frequencies up to 20 MHz. It includes step-up converter capabilities for VCC generation, protected I/O lines for card contacts C4, C7, and C8, and enhanced ESD protection exceeding 6 kV on the card side.

Specialized Feature Summary

• Integrated 26 MHz crystal oscillator and clock generation for cards up to 20 MHz
• Enhanced ESD protection on the card side exceeding 6 kV
• Automatic activation and deactivation sequences initiated by software or hardware
• Thermal and short-circuit protection on all card contacts

Specialized Applications

• Set-top boxes
• Electronic payment systems
• Pay TV terminals
• Identification cards

Specialized Procurement Notes

Verify the specific suffix ACTR against official datasheets to confirm package type and tape-and-reel configuration. Ensure compatibility with NDS conditional access systems if applicable, noting that certain variants may have exceptions. Confirm RoHS compliance status through manufacturer documentation before integration into final products.

Specialized Selection Notes

Select this component when designing interfaces for ISO 7816, GSM 11.11, and EMV 4.2 compliant smart cards. It is suitable for applications requiring low external component counts and robust supply protection. Consider the 1.8 V, 3 V, or 5 V supply options based on target card specifications and system power constraints.

Specialized Part Context

The ST8024LACTR belongs to the ST8024L series of smart card interface ICs from STMicroelectronics. This series is engineered to simplify the integration of smart card functionality into embedded systems by handling complex analog interface tasks, allowing designers to focus on application-level logic rather than low-level card control.

Specialized Replacement Considerations

The ST8024LCDR and ST8024LCTR are compatible with the ST8024L series, except for the Vth(ext)rise/fall value. Verify electrical parameter alignment, particularly threshold values, when substituting these parts to ensure signal integrity in existing designs.