New level translators from Nexperia support legacy and future mobile phone SIM cards

Nexperia announced the latest addition to its family of voltage level translators, the NXT4557GU and NXT4556UP. These devices enable seamless connectivity of next generation low voltage mobile phone baseband processors with its subscribers’ identity module (SIM) cards. As processor geometries advance to single digit nanometer nodes, the core voltage of advanced SoCs is decreasing. This development results in the increasing need for voltage translators to connect the SoC to other standard process devices and I/O ports like legacy Class B and Class C SIM cards.  

The NXT4557GU and NXT4556UP dual-supply translators support voltages levels between 1.08 V and 1.98 V on the host processor side and 1.62 V to 3.6 V on the SIM card side. These operating ranges make these devices compliant with legacy Class B (3.0 V ± 10%) and Class C (1.8 V ± 10%) voltage levels, while maintaining compatibility with the voltage levels which will be used by future SIM card interface standards (1.2 V ± 10%). The NXT4557GU and NXT4556UP both feature bidirectional IO and unidirectional RESET and clock channels and also a smart ONE SHOT that enables very low channel propagation delays. These devices have a low operating current of 8µA with a standby current of only 1µA to help maximize the battery life of mobile devices (more info).