Analog Devices Inc./Maxim Integrated 73S8014BN-IL/F

Overview

The 73S8014BN-IL/F from Maxim Integrated is a single-chip smart card (ICC) interface IC compliant with ISO 7816-3, EMV® 4.2, and NDS standards. It delivers 1.8V/3V/5V card voltage support (up to 40mA at 1.8V, 65mA at 5V), integrated LDO-regulated VCC generation from 4.75–5.5V VPC input, and true overcurrent detection (145mA max). Designed for set-top box conditional access systems, it replaces legacy 8024-family interfaces with reduced pin count and firmware compatibility.

For engineers reviewing the 73S8014BN-IL/F datasheet, 73S8014BN-IL/F pinout, 73S8014BN-IL/F application, or 73S8014BN-IL/F equivalent, key selection considerations include its NDS-compliant activation/deactivation sequencer, crystal- or host-driven clock up to 27MHz with programmable CLKDIV (÷1/2/4/8), ±6kV ESD protection on card pins, and power-down mode drawing only 1µA per supply.

Technical Context

The 73S8014BN-IL/F implements an ISO 7816-3-compliant hardware sequencer that autonomously manages card activation/deactivation timing, including emergency deactivation on VDD fault, VCC undervoltage, or card overcurrent. Its embedded LDO regulator powers the card from dedicated VPC (4.75–5.5V), while digital logic runs from separate VDD (2.7–3.6V), enabling mixed-supply system integration.

Card clock generation supports dual sources: external crystal (XTALIN/XTALOUT) or host-provided clock (up to 27MHz), with CLKDIV pin selecting division ratios (÷1/2/4/8) via voltage-level thresholds. The interrupt output (OFF) is open-drain and reports card presence, readiness, and faults-requiring no additional glue logic for host controller interfacing.

Key Specifications

Pinout & Package

Package: 20-pin SO (Small Outline), RoHS-compliant, lead(Pb)-free, 7.5mm × 12.8mm body size per Figure 21 in DS_8014BN_057.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 73S8014BN-IL/F, the 73S8024RN-FT+ adds POR flexibility but lacks 1.8V support and increases board area; the SLN100000000 reduces package size but requires external regulation and forfeits NDS compliance-making 73S8014BN-IL/F the optimal choice for compact, NDS/EMV/ISO-certified 1.8V–5V systems.

Availability

The 73S8014BN-IL/F is available at Aetrix Electronics and suitable for set-top box conditional access, pay-per-view terminals, general-purpose smart card readers, and EMV® 4.2 payment terminals requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for 73S8014BN-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

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.

The 73S8014BN-IL/F belongs to Maxim's 73S80xxR smart card interface product line, engineered specifically for cost-optimized, standards-compliant conditional access and secure transaction systems in space-constrained consumer electronics.

FAQ

What voltage levels does the 73S8014BN-IL/F support for smart card operation?

The 73S8014BN-IL/F supports 1.8V, 3V, and 5V smart cards with dedicated current limits: up to 40mA at 1.8V, 65mA at 3V, and 65mA at 5V. Voltage selection is controlled by the 5V/#V pin in conjunction with CMDVCC timing, and the integrated LDO ensures NDS-compliant VCC regulation (e.g., 4.75–5.25V at 5V) directly from a 4.75–5.5V VPC supply. This eliminates need for external regulators in most designs.

How does the 73S8014BN-IL/F handle fault conditions such as card overcurrent or power loss?

The 73S8014BN-IL/F features true current-sense overcurrent detection-not voltage-drop sensing-triggering immediate emergency deactivation at 145mA (5V/3V) or 110mA (1.8V). It also monitors VDD (fault threshold 2.15–2.4V) and VCC (4.6V at 5V, 2.7V at 3V, 1.65V at 1.8V) with dedicated comparators. All faults assert the open-drain OFF pin to alert the host, and the sequencer automatically disables VCC, RST, and CLK outputs to protect the card.

Can the 73S8014BN-IL/F generate the smart card clock internally, and what are the options?

Yes, the 73S8014BN-IL/F can generate the smart card clock either from an external crystal (via XTALIN/XTALOUT pins) or from an externally supplied clock signal (applied to XTALIN). The CLKDIV pin selects division ratios of ÷1, ÷2, ÷4, or ÷8 from the base oscillator/clock frequency. Supported input frequencies reach 27MHz, and the card clock output is guaranteed stable up to 20MHz with 45–55% duty cycle-meeting ISO 7816-3 timing requirements.

Is the 73S8014BN-IL/F pin-compatible with other Maxim smart card interface ICs like the 73S8024RN?

No, the 73S8014BN-IL/F is not pin-compatible with the 73S8024RN due to its optimized 20-pin SO footprint versus the 24-pin SO of the 73S8024RN. However, it maintains firmware compatibility-the host processor uses identical control sequences (CMDVCC, RSTIN, 5V/#V) and receives status via the same OFF interrupt. This allows migration from 73S8024RN-based designs with PCB layout revision but no firmware changes.

What is the purpose of the VPC and VDD supplies, and how are they used in the 73S8014BN-IL/F?

VPC (4.75–5.5V) powers the integrated LDO regulator that generates the smart card's VCC supply, while VDD (2.7–3.6V) powers the digital interface logic and sequencer. This dual-supply architecture isolates card power from host logic, improves noise immunity, and enables use of a single 5V system rail for VPC while running the host interface from a lower-voltage domain. Decoupling capacitors are required on both supplies per datasheet guidelines.