ST8034ATDT

Specialized Overview

The ST8034ATDT is a smartcard interface IC from STMicroelectronics, designed for asynchronous and synchronous smartcards. It operates at a fixed supply voltage of 5 V with a maximum operating current of 70 mA. The device supports power dissipation up to 250 mW and functions within a temperature range of -25 °C to +85 °C. Packaged in an SOIC-16 surface-mount format, it provides complete analog interface functions between the smartcard and microcontroller.

Specialized Feature Summary

• Provides ISO 7816 and EMV 4.3 compatible smartcard interface with one protected half-duplex bidirectional buffered I/O line.
• Includes automatic card activation/deactivation sequences and emergency deactivation triggered by short-circuits or overheating.
• Features enhanced card-side ESD protection rated at 8 kV and thermal/short-circuit protection for all card contacts.

Specialized Applications

• Point-of-sale (POS) terminals
• Set-top boxes and pay TV systems
• Identification and banking devices
• Tachographs

Specialized Procurement Notes

Verify the specific suffix DT indicates reel packaging when confirming order details. Ensure the 5 V supply requirement aligns with system design constraints. Confirm RoHS compliance status and moisture sensitivity level prior to assembly planning. Cross-reference the manufacturer part number ST8034ATDT with official datasheets to validate pinout and electrical specifications.

Specialized Selection Notes

Select this component for designs requiring a complete low-cost analog interface for 5 V smartcards. It is suitable for applications needing integrated supply control, protection, and detection functions with minimal external components. Consider the SOIC-16 package for standard surface-mount assembly processes.

Specialized Part Context

The ST8034ATDT belongs to the ST8034 family, which includes variants like ST8034T, ST8034P, and ST8034C. These devices serve as interfaces between smartcards and microcontrollers, handling supply, protection, and control functions. The AT variant specifically targets 5 V operation, distinguishing it from lower voltage options like the ST8034P.

Specialized Replacement Considerations

Compatible substitutes within the same family include ST8034T, ST8034P, and ST8034C. Verify voltage compatibility, as ST8034P supports 1.8 V. Check package availability, as ST8034HN uses a 24-pin package. Ensure functional equivalence for ISO 7816 compliance before substitution.