ST8034HCQR

Specialized Overview

The ST8034HCQR is a specialized smart card interface IC manufactured by STMicroelectronics, designed for asynchronous and synchronous smartcard applications. It operates at a supply voltage of 5 V with an operating supply current of 70 mA. The device supports a wide temperature range from -25 °C to +85 °C and features a QFN-16 package suitable for surface mount technology (SMD/SMT). It provides complete analog interface functions between the smartcard and microcontroller, including power supply control, protection, detection, and signal buffering.

Specialized Feature Summary

• Provides complete low-cost analog interface for asynchronous and synchronous smartcards
• Compatible with ISO 7816, NDS, and EMV 4.3 payment systems
• Includes three protected half-duplex bidirectional buffered I/O lines
• Features integrated chip select function for parallel combination capabilities

Specialized Applications

• Point of Sale (POS) terminals
• Set-top boxes and Pay TV systems
• Identification and banking devices
• Tachograph applications

Specialized Procurement Notes

Verify the specific suffix QR against official STMicroelectronics documentation to confirm packaging details such as reel or cut tape specifications. Ensure the component matches the required QFN-16 package dimensions and pinout configuration for your PCB layout. Cross-reference the RoHS compliance status and manufacturing origin with the latest datasheet revision to guarantee regulatory adherence and supply chain authenticity.

Specialized Selection Notes

Select this component when a dedicated smartcard interface is required between the card reader and the microcontroller. It is suitable for designs needing controlled VCC rise/fall times and overload detection. Consider the QFN-16 package size constraints and the 5 V supply requirement. Verify that the thermal dissipation characteristics fit within the system's ambient temperature limits.

Specialized Part Context

The ST8034HCQR belongs to the ST8034 family of smartcard interface devices. This series is engineered to minimize external component count while providing robust protection and control functions. The HC variant specifically supports chip select functionality, allowing multiple interfaces to be connected in parallel on the same bus, enhancing system flexibility for multi-card reader designs.

Specialized Replacement Considerations

The ST8034HN is a related device in the same family but lacks the chip select feature found in the HC variant. When substituting, verify if parallel interface capability is required. Other generic smartcard interface ICs may not offer the same level of integrated protection or EMV compatibility without additional external circuitry.