ST8024CTR

Specialized Overview

The ST8024CTR is a smart card interface IC from the ST8024L series manufactured by STMicroelectronics. It serves as a low-cost analog interface for asynchronous 3V and 5V smart cards, functioning between the card and a microcontroller. The device integrates a 26 MHz crystal oscillator and supports clock generation up to 20 MHz via division ratios of 1, 2, 4, or 8. It provides supply supervision, ESD protection exceeding 6 kV on the card side, and thermal/short-circuit protection. The IC handles current spikes up to 40 mA at 20 MHz and includes filtered overload detection at approximately 120 mA.

Specialized Feature Summary

• Integrated 26 MHz crystal oscillator with programmable clock division for synchronous frequency changes
• Enhanced electrostatic discharge (ESD) protection on the card interface side
• Built-in debounce logic for card presence contact detection
• Automatic activation and deactivation sequences triggered by software or hardware faults

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 'CTR' against the official STMicroelectronics datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with the required 3V or 5V supply rails and check for RoHS compliance status in the latest product documentation before procurement.

Specialized Selection Notes

Select this component when a direct replacement for the ST8004 is required in smart card reader designs. It is suitable for systems needing integrated supply protection, spike handling, and ISO 7816/GSM11.11/EMV compatibility without extensive external components.

Specialized Part Context

The ST8024CTR belongs to the ST8024L family of smart card interface ICs. This series is designed to simplify the connection between smart cards and microcontrollers by integrating control functions, power regulation, and protection circuits into a single low-cost solution.

Specialized Replacement Considerations

The ST8024 is documented as a direct replacement for the ST8004. Verify pinout and electrical parameter equivalence before substitution.