The device is an SD 3.0-compliant bidirectional dual voltage level translator withauto-direction control. It is designed to interface between a memory card operating at1.8 V or 3.0 V signal levels and a host with a nominal supply voltage of 1.2 V to 1.8 V.The device supports SD 3.0 SDR104, SDR50, DDR50, SDR25, SDR12 and SD 2.0 High-Speed (50MHz) and Default-Speed (25 MHz) modes. The device has an integrated voltage selectablelow dropout regulator to supply the card-side I/Os, an auto-enable/ disable functionconnected to the VSD supply pin, built-in EMI filters and robust ESDprotections (IEC 61000-4-2, level 4).
Feature
- Supports up to 208 MHz clock rate
- SD 3.0 specification-compliant voltage translation to support SDR104, SDR50,DDR50, SDR25, SDR12, High-Speed and Default-Speed modes
- 1.2 V to 1.8 V host side interface voltage support
- Feedback channel for clock synchronization
- 100 mA Low dropout voltage regulator to supply the card-side I/Os
- Low power consumption by push-pull output stage with break-before-makearchitecture
- Automatic enable and disable through VSD
- Integrated pull-up and pull-down resistors: no external resistors required
- Integrated EMI filters suppress higher harmonics of digital I/Os
- Integrated 8 kV ESD protection according to IEC 61000-4-2, level 4 on cardside
- Level shifting buffers keep ESD stress away from the host (zero-clampingconcept)
- 20-ball WLCSP; pitch 0.4 mm
- Smart phones
- Mobile handsets
- Digital cameras
- Tablet PCs
- Laptop computers
- SD, MMC or microSD card readers
