ISO/IEC 7816-3:2006/Amd 1:2025

Overview

ISO/IEC 7816-3:2006/Amd 1:2025 is an important amendment to the international standard covering identification cards with integrated circuits and contacts. This amendment introduces additional voltage classes for the electrical interface and transmission protocols used in contact-based smart cards. Developed by ISO and IEC, this update ensures enhanced compatibility and functionality in integrated circuit cards by adding a new voltage class, expanding the established framework to meet modern technical requirements.

This amendment enhances the original 2006 third edition of ISO/IEC 7816-3 by including voltage class D (1.2 V nominal) alongside the existing classes A (5.0 V), B (3.0 V), and C (1.8 V). It specifies the updated electrical characteristics and relevant transmission parameters for the new voltage class and adjusts related protocol definitions accordingly.

Key Topics

• Additional Voltage Class: Introduction of voltage class D (1.2 V nominal) to support newer integrated circuit technologies and low voltage operation.
• Electrical Interface Updates:
  • Revised voltage ranges for classes A, B, C, and D.
  • Class D defined with minimum voltage of 1.10 V and maximum of 1.30 V under normal operating conditions.
  • Current ratings adapted for class D operating conditions.
• Transmission Protocol Enhancements:
  • Adjustments in clock stop indicator encoding to accommodate all four voltage classes.
  • Revised electrical characteristics including timing and current values specific to voltage class D.
• Updated Tables:
  • Replacement of Table 1 and Table 2 to include electrical characteristics and maximum current for all four voltage classes.
  • Modifications to protocol indicator tables for class support and clock stop functionalities.
• Compatibility and Compliance: Maintains backward compatibility while enabling next-generation card designs that require lower power consumption and voltage tolerance.

Applications

The amendment expands the application range of ISO/IEC 7816-3 to include:

• Contact smart cards with low-power ICs that require 1.2 V operation, such as advanced banking cards, national identity cards, and SIM cards.
• Financial and telecommunications sectors where efficient power usage and increased compatibility with terminal devices are essential.
• Security and access control systems requiring reliable electrical standards for integrated circuit cards.
• Smart card manufacturers and card readers designing devices that support a broader range of electrical interface voltages compliant with international standards.
• Enhanced multi-voltage compatibility in card-based ecosystems, reducing the need for hardware modifications for different card types.
• Facilitation of the development of energy-efficient integrated circuits within cards, addressing evolving technology needs.

Related Standards

• ISO/IEC 7810: Identification cards - Physical characteristics - Defines the physical dimensions and durability requirements for identification cards.
• ISO/IEC 13239: Information technology - Telecommunications and information exchange - Protocol procedures including HDLC for data link control, which complements transmission in smart card communication.
• ISO/IEC 7816 Series: The broader family of standards specifying additional parts related to contact and contactless integrated circuit cards including application identifiers, commands, security protocols, and more.

By aligning with these related standards, ISO/IEC 7816-3:2006/Amd 1:2025 ensures cohesive development and interoperability of smart card systems nationwide and worldwide.

Keywords: ISO/IEC 7816-3 Amendment 1, smart card voltage classes, contact smart card electrical interface, integrated circuit card standards, low voltage smart cards, smart card transmission protocols, card reader compatibility, identification cards international standard, ISO smart card standard updates.