Design Files
1 design file
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Symbols and Footprints
NVT4556AUK_WLCSP-CAD Symbol and PCB Footprint – BXL File
- No Longer Manufactured
- NVT4556
SIM Card Interface Level Translator with I²C-Bus Control and LDO
NVT4556 Receive alerts
- Archived
- This page contains information on a product that is no longer manufactured (discontinued). Specifications and information herein are available for historical reference only.
NVT4556 device is "Not recommended for new designs", please use the replacement part NVT4557.
The NVT4556 device is built for interfacing a SIM card with a single low-voltage host-side interface. The NVT4556 contains an LDO that can deliver two different voltages, 1.8 V or 3 V, from a typical mobile phone battery voltage, and three level translators to convert the data, RSTn and CLKn signals between a SIM card and a host microcontroller.
The NVT4556 VCC pin provides power to the host side I/Os and doubles as an enable pin, for this reason it can be connected to a GPIO that matches the host side voltage. The total current draw from the VCC pin is only 100 μA maximum. The NVT4556 also uses the I²C-bus interface to enable normal operation and to select either 1.8 V or 3 V for the SIM card power supply. The NVT4556 can also disable the LDO functionality while maintaining the level translator paths so that the user can use a system-controlled regulator to power the SIM card power supply. The NVT4556 can enable users to provide second and third SIM card functionality with a low-voltage one host SIM port, at the same time reducing the number of GPIOs used in the system. The NVT4556 is compliant with all ETSI, IMT-2000 and ISO-7816 SIM/Smart card interface requirements.
The NVT4556 is available in a 12-pin WLCSP package and has three factory programmed follower address options.
Product Details
Features
Key Features
- Support SIM card supply voltages 1.8 V and 3 V
- Input voltage range to LDO: 2.5 V to 5.25 V
- Host microcontroller operating voltage range: 1.55 V to 3.6 V
- VCC input pin provides both host supply voltage and logic level hardware enable/disable pin: source through Host GPIO (ICC<100 μA)
- RST_HOST/EN pin can be programmed as a reset pin or as a device enable/disable pin
- Level translation of I/O, RSTn and CLKn between SIM card and host-side interface with capacitive isolation
- I²C-bus interface for device enable and LDO voltage selection
- Low current shutdown mode < 3 μA
- Supports clock speed beyond 5 MHz clock
- Supports CLK stop mode
- Integrated EMI filters
- Incorporates ISO-7816-3 shutdown feature for the SIM card signals
- ETSI, IMT2000 and ISO-7816 compliant
- ±8 kV IEC61000-4-2 ESD protected on all SIM card contact pins
- Pb-free, Restriction of Hazardous Substances (RoHS) compliant and free of halogen and antimony (Dark Green compliant)
- Available in 12-pin WLCSP package (1.205 mm × 1.605 mm × 0.412 mm, 0.4 mm pitch)
Documentation
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