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The NVT4557UKAZ device is built to interface SIM cards to a single 1.08 V to 1.95 V low voltage host-side interface.The NVT4557UKAZ contains three 1.65 V to 3.6 V level shifters for converting the data, RSTn, and CLKn signals between the SIM card and host microcontroller.

The NVT4557UKAZ meets all ETSI, IMT-2000 and ISO-7816 SIM/Smart Card interface requirements.

Key Features

Supports clock speeds up to 10MHz

Meets all ETSI, IMT-2000 and ISO-7816 SIM/smart card interface requirements

Supports SIM card power supply from 1.65 V to 3.6 V

Main microcontroller operating voltage range: 1.08 V to 1.95 V

Automatic level switching of I/O, RSTn and CLKn between SIM card and capacitively isolated host-side interface

Integrated ISO-7816-3 shutdown for SIM card signals

Automatic enable and disable via VCCB

Integrated pull-up and pull-down resistors: no external resistors required

Integrated EMI filter suppresses high harmonics of digital I/Os

SIM card contact pins provide integrated 8 kV ESD protection according to IEC 61000-4-2 level 4 standard

Level shifting buffers keep ESD stresses away from the host (zero clamp concept)

RoHS-compliant lead-free package, halogen-free/antimony-free (Deep Green compliant)

Available in a 9-pin WLCSP package with 0.3 mm pitch

Applications

The NVT4557 can be used with a range of SIM card connected devices including:

- Mobile and personal phones

- Wireless modems

- SIM card terminals

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

• 2.Are all our products genuine?

  A: our self-supporting products are from cooperative domestic and foreign original factories or authorized agents, and the source can be traced to ensure the original and authentic products.

• 3.Can you provide the qualification certificate of the original factory or agent?

  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

• 4.Can I make an inquiry through the company's website?

  A: You can inquire through the website, or by phone and email.

• 5.When can I deliver the goods after placing an order? How long will it take to get there?

  A: the delivery date is marked in most commodity information. You can estimate the delivery time of the commodity according to the delivery date. The specific arrival time depends on the warehouse where the commodity is located and the logistics mode you choose.

• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.