ST6G3240 datasheet(3/29 Pages) STMICROELECTRONICS

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ST6G3240

ST6G3240 general description

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ST6G3240 general description

The ST6G3240 is a dual supply low voltage CMOS level translator supporting the dual

function of mini SD/micro SD card and managed NAND memories. It is designed for use as

an interface between three systems using 3.3, 2.5 and 1.8 V respectively.

The ST6G3240 is capable of achieving high speed operation and at the same time

maintaining low power dissipation.

While the A port is designed to track VCCA, the Bn port (nCMD, nDAT, nCLK) is designed to

track VCCBn.

The device is intended for a two-way asynchronous communication between data buses.

The direction of data transmission is determined by CMD-dir/DATA0-dir/DAT123-dir inputs.

In the typical application the Bn-port interfaces with the 3 V bus and the A-port with the 1.8V

bus.

With interchangeable voltage levels, there is no restriction on the voltage settings for each

supply. VCCA can be less than or greater than VCCB1 or VCCB2. For example, VCCA = 2.5 V,

VCCB1 = 3.6 V, VCCB2 = 1.8 V.

Full low power mode

This device can be entered into 'full lower power mode' by setting all the INn pins to low or

high, which will disable the device completely.

Partial low power mode

Alternatively, the device can be set into 'partial low power mode' by grounding or floating one

of the VCCBn power supplies. This will set all the corresponding output Port-n to High-Z.

However, it is important to note that VCCA power supply must not be grounded or floating

whenever VCCBn is connected to a power supply as this will lead to significant current

consumption increase.

ST6G3240 Datasheet(PDF) 3 Page - STMicroelectronics