73S8010C-IMR/F

Overview

The Teridian 73S8010C is a single smart card interface IC providing full electrical compliance with ISO-7816-3 and EMV 4.0 specifications. It interfaces with the host via a fast-mode 400 kbps I2C bus, supporting up to eight parallel devices. The device incorporates an inductor-based DC-DC converter that generates 3 V or 5 V card power from a 2.7 V to 3.6 V system supply (VDD), delivering up to 100 mA with over 80% efficiency at 5 V output. An on-chip oscillator utilizes an external crystal or an external clock signal up to 27 MHz to generate the card clock. Hardware support includes auxiliary I/O lines for C4/C8 contacts and automated emergency deactivation upon card removal or fault detection.

Feature Summary

• Inductor-based DC-DC converter provides higher current capability and efficiency compared to standard charge-pump designs.
• Integrated ISO-7816-3 activation and deactivation sequencer with automated emergency shutdown on faults.
• Dual voltage supervisors monitor VCC and VDD levels, with adjustable VDD threshold via external resistor.
• True over-current detection limits card current to 150 mA maximum, triggering automatic deactivation.

Applications

• Set-Top-Boxes and DVD/HDD Recorders for Conditional Access and Pay-per-View slots
• Point of Sales and Transaction Terminals
• EMV slots in cell phones and PDAs

Procurement Notes

Verify component authenticity through authorized Analog Devices or Maxim Integrated distributors. Confirm package type matches design requirements, as the device is available in SO28 and 32-QFN formats. Ensure ordering suffixes align with specific thermal or mechanical constraints defined in the manufacturer's documentation.

Selection Notes

Select the appropriate package based on board space and thermal management needs. Verify that the external inductor value meets the required current specifications for the target application. Ensure the host controller supports the 400 kHz I2C protocol and can manage the interrupt signals for fault detection and status monitoring.

Part Context

The 73S8010C belongs to the Teridian smart card interface family, originally developed by Teridian Semiconductor Corporation before its acquisition by Maxim Integrated, now part of Analog Devices Inc. This series focuses on simplifying system integration for secure transaction applications requiring robust power management and protocol compliance.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided datasheet. Evaluate other models within the 73S80xx series or comparable smart card readers from Analog Devices/Maxim Integrated for pin-compatible or functionally equivalent alternatives.

FAQ

How is the VDD fault voltage threshold adjusted?

The default VDD fault threshold is 2.3 V. It can be raised by connecting an external resistor (REXT) from the VDDF_ADJ pin to ground, or by using a resistive network (R3/R4) for more accurate adjustment.

What triggers the emergency card deactivation?

Emergency deactivation is initiated upon card extraction or any fault detected by the protection circuitry, including VDD/VCC voltage drops, card over-current, or over-heating.

Can the device operate without an internal crystal?

Yes. The XTALIN pin can be driven by an external clock signal from the system controller instead of using an internal crystal oscillator connected between XTALIN and XTALOUT.