SIM card interface

SIM card interface

NXP Semiconductors simplifies the design process for portable devices by offering a comprehensive portfolio of SIM card compatible interface conditioning and protection devices. This includes EMI filtering, system level ESD protection devices as well as level translators and analog switches.

Block diagram

Key features and benefits

  • Optimized solutions for compliance with SIM card interfaces in terms of:
    • channel capacitance
    • serial resistance
    • high system level ESD protection
  • No disturbance from the harmonics of the digital memory interfaces
  • Maximum space savings compared to discrete solutions


NXP offers a tailored portfolio to protect (U)SIM interfaces from ESD discharges and EMI interference, in terms of radiation and injection. Following the ISO/IEC 7816-3, ISO/IEC 7816-12 and ETSI TS 102221 standards, all mobile phones are manufactured using SIM or Universal Integrated Circuit Card (UICC) smart cards. These are often referred to as USIM cards for 3G and beyond.

This interface is universally important and it is typically protected against damage from ESD and EMI interference from the mobile phone transmitter. Especially in GSM mobile phones, where digital interfaces to external connectors are also protected against EMI radiation.

  • VCC: provides card power supply (also named UCC)
  • RST: provides card reset signal
  • CLK: provides card clock signal
  • I/O: data exchange between card and controller
  • AUX USB interface (optional)

Documentation for this application

File nameTitleTypeFormatDate
AN10914SIM card EMI filtering and ESD protection using integrated discretes (1.0)Application notepdf2010-06-02
75016799Low-power, high-speed, dual-supply voltage translation (0.8 to 5.5 V) (1.0)Selection guidepdf2009-09-01
75017090Application guide; Portable devices and mobile handsets (3.0)Selection guidepdf2011-08-15

Technical support

Do you want to ask technical questions to an NXP expert?
Please select one of the following options:

How to search?

Already registered to MyNXP? or Register