Nexperia NXT4557 SIM Card Interface Level Translator with ENABLE pin

Nexperia NXT4557 SIM Card Interface Level Translator is built for interfacing a SIM card with a single low-voltage host-side interface. The NXT4557 consists of three-level translators to convert the data, RST, and CLK signals between a SIM card and a host microcontroller. The translator features a high-speed level translation capable of supporting class-B, class-C SIM cards, and HIGH EN pin that enables the normal operation of the translator. The device is compliant with all ETSI, IMT-2000, and ISO-7816 SIM/Smart card interface requirements. Typical applications include a wide range of SIM card-attached devices, including mobile and personal phones, wireless modems, and SIM card terminals.

Features

• Support SIM cards and eSIM with supply voltages 1.62V to 3.3V
• 1.08V to 1.98V host micro-controller operating voltage range
• Automatic level translation of I/O, RST, and CLK between SIM card and host side interface with capacitance isolation
• Incorporates shutdown feature for the SIM card signals according to ISO-7816-3
• High V_{dis(UVLO_AC)} switching level, arranging quick shut down when V_{CC_SIM} powers down
• Integrated pull-up resistors; no external resistor required
• Integrated EMI Filters suppress higher harmonics of digital I/Os
• A HIGH EN signal enables the translation of the signals
• Low current shutdown mode <1μA
• Supports clock speed beyond 5MHz clock
• Pb-free, Restriction of Hazardous Substances (RoHS) compliant, and free of halogen and antimony (Dark Green compliant)
• ESD protection:
  • HBM ANSI/ESDA/JEDEC JS-001 exceeds 2kV
  • CDM ANSI/ESDA/JEDEC JS-002 exceeds 1kV
  • IEC61000-4-2 level 4, contact and air discharge on all SIM card-side pins are 8kV and 15kV
• Available in a 10-pin XQFN package

Block Diagram

Application Circuit

more information: https://www.nexperia.com/products/analog-logic-ics/asynchronous-interface-logic/voltage-translators-level-shifters/series/NXT4557.html

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