 Features
 Supports up to 208 MHz clock rate
 1.1 V to 1.95 V host side interface voltage
 1.7 V to 3.6 V SD card voltage
 Auto-direction sensing
 Low power consumption
 Integrated pull-up resistors: no external resistors
required
 Integrated EMI filters suppress higher harmonics
of digital I/Os
 Level shifting buffers keep ESD stress away
from the host
 ESD protection:
− HBM: ANSI/ESDA/JEDEC JS-001 class 2
exceeds 2 kV
− CDM: ANSI/ESDA/JEDEC JS-002 class C3
exceeds 1 kV
− IEC6100-4-2, level 4, contact and air
discharge on all memory card-side pins,
VCCB and GND, are ±8 kV and ±15 kV
respectively
 Temperature range: -40°C to 85°C
 Applications
 Smartphone
 Mobile handsets
 Digital cameras
 Tablet PCs
 Laptop computers
 SD, MMC or micro-SD card readers
 Description
The DIO74506 is an SD 3.0-compliant bidirectional
dual-supply level translator featuring auto direction
control. It is designed to interface between a memory
card operating at 1.7 V to 3.6 V signal levels and a
host with a typical supply voltage of 1.1 V to 1.95 V.
The device supports SDR104, SDR50, DDR50,
SDR25, SDR12 and SD2.0 high-speed (50 MHz) and
default-speed (25 MHz) modes.