Analog Devices Inc./Maxim Integrated 73S8010R-IL/F

Overview

The 73S8010R-IL/F from Teridian Semiconductor is a single-chip ISO/EMV-compliant smart card interface IC that provides full electrical compliance with ISO-7816-3 and EMV 4.0 specifications, delivers 3 V or 5 V card power via an integrated LDO regulator, supports fast-mode (400 kbps) I²C host interface with 8-device parallel addressing, and features true 150 mA over-current detection for secure card deactivation in set-top box conditional access systems.

For engineers reviewing the 73S8010R-IL/F datasheet, 73S8010R-IL/F pinout, 73S8010R-IL/F application, or 73S8010R-IL/F equivalent, key selection considerations include its dual-package availability (QFN32/SO28), programmable VDD fault threshold via VDDF_ADJ, embedded activation/deactivation sequencer with emergency card removal response, and support for C4/C8 auxiliary contacts in transaction terminal designs.

Technical Context

The 73S8010R-IL/F integrates an ISO-7816-3-compliant activation/deactivation sequencer with automated emergency deactivation triggered by card extraction or faults-including VDD, VPC, VCC, ICC, or die temperature violations. Its on-chip LDO regulator accepts a dedicated 4.75–5.5 V VPC supply and outputs regulated 3 V or 5 V to the smart card at up to 90 mA continuous current.

Host communication uses a fast-mode I²C slave interface (400 kbps) with three address-select pins (SAD0–SAD2) enabling up to eight devices on one bus, plus an active-low interrupt output (INT) that signals card presence, voltage faults, or protection events. Clock generation supports either external crystal (XTALIN/XTALOUT) or host-provided clock up to 27 MHz, with programmable CLKSEL bits selecting division ratios of /2, /4, /8, or direct pass-through.

Key Specifications

Pinout & Package

Available in both 32-pin QFN (5 × 5 × 0.8 mm) and 28-pin SO packages. The 73S8010R-IL/F variant corresponds to the QFN32 package per ordering information in DS_8010R_022 Rev. 1.6.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar smart card interface applications.

Compared with SLB9670, the 73S8010R-IL/F delivers complete, self-contained smart card interfacing without external components or host-side protocol stack burden; compared with TDA8020, it extends supervision capability and offers smaller QFN32 packaging for higher-density layouts.

Availability

The 73S8010R-IL/F is available at Aetrix Electronics and suitable for set-top box conditional access, point-of-sale terminals, and physical access control systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for 73S8010R-IL/F includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Teridian Semiconductor was a fabless analog/mixed-signal IC company specializing in metering, power management, and secure interface solutions before its acquisition by Maxim Integrated in 2010.

The 73S8010R product line was designed specifically for cost-sensitive, high-reliability smart card reader applications in consumer and commercial infrastructure - emphasizing integration, fault resilience, and EMV certification readiness.

FAQ

What is the primary function of the 73S8010R-IL/F in a smart card system?

The 73S8010R-IL/F serves as a complete, single-chip smart card interface IC that manages all electrical aspects of ISO-7816-3 and EMV 4.0 compliance - including card power regulation (3 V/5 V), clock generation, reset control, I/O buffering, presence detection, and fault-safe activation/deactivation sequencing. It replaces multiple discrete components and simplifies host MCU integration via I²C.

Does the 73S8010R-IL/F support both 3 V and 5 V smart cards?

Yes, the 73S8010R-IL/F supports both 3 V and 5 V smart cards through software-selectable VCC output. Bit 2 of the control register determines the output voltage: when set, VCC = 3 V; when reset, VCC = 5 V. The LDO regulator delivers up to 90 mA continuously at either voltage, meeting ISO-7816-3 load requirements.

How does the 73S8010R-IL/F handle card removal or fault conditions?

The 73S8010R-IL/F initiates emergency deactivation automatically upon card extraction (detected via PRES pin) or any fault - including VDD, VPC, or VCC undervoltage, card over-current (≥150 mA), or die over-temperature (>115 °C). This triggers controlled VCC ramp-down to prevent data corruption and contact arcing, with status reported via the PROT bit in the status register.

What package options are available for the 73S8010R-IL/F?

The 73S8010R-IL/F is specified in the QFN32 package (5 × 5 × 0.8 mm), as confirmed by the "-IL/F" suffix and ordering information in DS_8010R_022 Rev. 1.6. While the base 73S8010R is also offered in SO28, the -IL/F variant maps exclusively to the QFN32 footprint, enabling higher-density PCB layouts and improved thermal performance in compact readers.

Can the 73S8010R-IL/F be used with an external clock source instead of a crystal?

Yes, the 73S8010R-IL/F supports both crystal oscillator (via XTALIN/XTALOUT pins) and external clock input modes. When using an external clock, XTALIN is driven directly by the host MCU's clock signal (up to 27 MHz), and XTALOUT is left unconnected. The CLKSEL bits in the control register then select the final card clock rate from Clkin/8 to Clkin.