SD card level translator shrinks footprint

Nexperia’s NXS0506UP bidirectional level translator for SD 3.0 memory cards comes in a 16-bump WLCSP that is 40% smaller than 20-bump devices. The voltage translator interfaces between a memory card operating at signal levels of 1.7 V to 3.6 V and a host with a nominal supply voltage of 1.1 V to 1.95 V. It supports multiple clock and data transfer rates at the signaling levels specified in the SD 3.0 standard, including the ultra-high-speed SDR104 mode.

Operating at clock frequencies of up to 208 MHz and data rates of up to 104 Mbps, the device shifts the data between the I/O supply levels of the host and the memory card. Integrated auto-direction control determines if command and data signals are transferred from the memory card to the host (card read mode) or from the host to the memory card (card write mode).

In addition to auto-direction control, the NXS0506UP integrates pull-up and pull-down resistors to reduce BOM cost. Input/output driver stages are equipped with EMI filters to reduce interference, and robust IEC 61000-4-2 ESD protection is provided on all memory card side pins. The part is specified from -40°C to +85°C. Its space saving 16-bump WLCSP is just 1.45×1.45×0.45 mm.

Applications for the NXS0506UP SD card level translator include consumer devices, such as smartphones, digital cameras, and notebook PCs, as well as home medical devices and automotive systems.

NXS0506UP product page


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