DS8313-RRX+

Specialized Overview

The DS8313-RRX+ is a smart card and SIM interface IC designed as a low-cost analog front-end for readers excluding auxiliary contacts C4 and C8. It supports 5V, 3V, and 1.8V cards with an ultra-low-power stop mode consuming less than 10nA typical current. The device operates on a digital supply (VDD) of 2.7V to 6.0V and requires a separate analog supply (VDDA) of 4.75V to 6.0V. It provides internal voltage generation delivering up to 80mA at 5V, 65mA at 3V, and 30mA at 1.8V. The component features ±8kV ESD protection, automatic activation/deactivation sequencing, and flexible clock division from an external crystal up to 20MHz. It is housed in a 28-pin SO package.

Specialized Feature Summary

• Analog interface and level shifting for IC card communication
• Ultra-low stop-mode current consumption below 10nA typical
• Internal IC card supply-voltage generation with high-current protection
• Automatic card activation and deactivation controlled by an internal sequencer

Specialized Applications

• Pay/Premium Television systems
• Access Control terminals
• Banking Applications
• POS Terminals
• Automated Teller Machines

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature range. Ensure compatibility with host microcontroller logic levels and power supply requirements before integration. Confirm lead-free status if RoHS compliance is mandatory for the target assembly process.

Specialized Selection Notes

Select this component when auxiliary smart card contacts are not required. Compare against the DS8314 variant if single-supply operation is preferred, noting its reduced current capacity. Verify that the application environment stays within the -40°C to +85°C operating temperature range and that the host system can provide the necessary dual-supply configuration.

Specialized Part Context

This part belongs to the DS8313/DS8314 family of smart card interfaces manufactured by Analog Devices Inc./Maxim Integrated. It serves as a specialized analog front-end solution for managing power and signal translation in contact-based smart card readers. The device simplifies design by integrating voltage regulation and protocol sequencing.

Specialized Replacement Considerations

The DS8314-RRX+ is a similar device within the same family but utilizes only one analog power supply, resulting in reduced current delivery capability. The DS8313L-RRX+ variant uses negative polarity-presence detection instead of the default positive-polarity detect.