Nexperia B.V. SIM card interface level translator with enable pin NXT4557GUX

The NXT4557 device is built for interfacing a SIM card with a single low-voltage host side interface. The NXT4557 has three level translators to convert the data, RST and CLK signals between a SIM card and a host microcontroller. A high speed level translation capable of supporting class-B, class-C SIM cards. An active HIGH EN pin enables normal operation of the translator. A HIGH to LOW transition on pin EN initiates a shutdown sequence on SIM card pins in accordance with ISO-7816-3.

The NXT4557 is compliant with all ETSI, IMT-2000 and ISO-7816 SIM/Smart card interface requirements.

Features and benefits

• Support SIM cards and eSIM with supply voltages 1.62 V to 3.3 V
• Host micro-controller operating voltage range: 1.08 V to 1.98 V
• 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 suppresses higher harmonics of digital I/O's
• A HIGH EN signal enables the translation of the signals
• Low current shutdown mode < 1 μA
• Supports clock speed beyond 5 MHz 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 class 2 exceeds 2000 V
• CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
• IEC61000-4-2 level 4, contact and air discharge on all SIM card-side pins are 8000 V and 15000 V
• Available in 10-pin XQFN package
• Specified from -40 °C to +85 °C

Applications

• NXT4557 can be used with a range of SIM card attached devices including:
• Mobile and personal phones
• Wireless modems
• SIM card terminals

Voltage Level Translator Unidirectional 1 Circuit 3 Channel 5Mbps 10-XQFN (1.4x1.8)

Voltage Level Translator Unidirectional 1 Circuit 3 Channel 5Mbps 10-XQFN (1.4x1.8)

Voltage Level Translator Unidirectional 1 Circuit 3 Channel 5Mbps 10-XQFN (1.4x1.8)