NVT4857UK: SD 3.0-SDR104 compliant integrated auto-direction control memory card voltage level translator with EMI filter and ESD protection

Overview

The device is an SD 3.0-compliant bidirectional dual voltage level translator with auto-direction control. It is designed to interface between a memory card operating at 1.8 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 (50 MHz) and Default-Speed (25 MHz) modes. The device has an integrated voltage selectable low dropout regulator to supply the card-side I/Os, an auto-enable/ disable function connected to the V_SD supply pin, built-in EMI filters and robust ESD protections (IEC 61000-4-2, level 4).

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Features

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-make architecture
Automatic enable and disable through V_SD
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 card side
Level shifting buffers keep ESD stress away from the host (zero-clamping concept)
20-ball WLCSP; pitch 0.4 mm

Target Applications

Smart phones
Mobile handsets
Digital cameras
Tablet PCs
Laptop computers
SD, MMC or microSD card readers

MoreLess

Features

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-make architecture
Automatic enable and disable through V_SD
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 card side
Level shifting buffers keep ESD stress away from the host (zero-clamping concept)
20-ball WLCSP; pitch 0.4 mm

Target Applications

Data Sheets

Application Notes

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