ST2149B
1 Description
Description
The ST2149B is a 4-bit dual supply level translator which provides the level shifting capability to allow data transfer in a multi-voltage system. Externally applied voltages, V
CC and V
L
, set the logic levels on either side of the device. Its architecture allows bi-directional level translation without a control pin.
The ST2149B accepts V
L
from 1.65 to 3.6 V and V
CC
from V
L
to 5.5 V, making it ideal for data transfer between low-voltage ASICs/PLD and higher voltage systems. This device has a tri-state output mode which can be used to disable all I/Os.
Doc ID 023310 Rev 1 5/23
