TDA8025HN/C1,551

Specialized Overview

The TDA8025HN/C1,551 is a smart card interface IC designed for asynchronous cards operating at 3 V, 1.8 V, or optionally 1.2 V. It features an integrated regulator with input voltage ranges of 3.6 V to 5.5 V (CONFIG grounded) or 3 V to 3.6 V (bypassed). The device supports interface supply voltages from 1.6 V to 3.6 V depending on configuration. Operating current reaches up to 85 mA in active mode and 300 μA in inactive mode. It provides thermal and short-circuit protection, enhanced ESD protection exceeding 6 kV, and clock generation up to 20 MHz using internal oscillators or external crystals.

Specialized Feature Summary

• Integrated power regulation and control functions for smart card applications
• Three protected bidirectional buffered I/O lines for half-duplex communication
• Automatic activation and deactivation sequences triggered by fault conditions
• Built-in debouncing on card presence contacts

Specialized Applications

• Pay TV systems
• Electronic payment terminals
• Identification readers
• Bank card readers

Specialized Procurement Notes

Verify the specific ordering suffix

Specialized Selection Notes

Select this component when designing interfaces for asynchronous smart cards requiring low power consumption and integrated protection. Ensure the host microcontroller can provide the required maximum voltage input level on XTAL1 without exceeding VDD(INTF) limits. Consider the HVQFN32 package constraints for PCB layout.

Specialized Part Context

This part belongs to the TDA8025 series of IC card interfaces manufactured by NXP Semiconductors. It serves as a cost-effective analog interface solution that minimizes external component count while providing robust supply regulation and control functions for various smart card applications.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.