NXT4557 SIM card interface level translator with enable pin Product data sheet
■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 withISO-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 exceeds 2 kV
▲CDM ANSI/ESDA/JEDEC JS-002 exceeds 1 kV
▲IEC61000-4-2 level 4, contact and air discharge on all SIM card-side pins are 8kV and 15 kV
■Available in 10-pin XQFN package
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[ Mobile phones ][ personal phones ][ Wireless modems ][ SIM card terminals ] |
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Datasheet |
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Please see the document for details |
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XQFN10;SOT1160-1 |
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English Chinese Chinese and English Japanese |
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3 February 2022 |
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Rev. 1 |
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NXT4557 v.1 |
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258 KB |
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