The ST2149 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, VCC and VL, set the logic levels on either side of the device. Its architecture allows bi-directional level translation without a control pin. The ST2149 accepts VL from 1.65 to 3.6 V and VCC from 1.65 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. The ST2149 supports power-down mode when VCC is grounded/floating or when the device is disabled via the OE pin.
The ST2149 is a 4-bit dual supply level translator designed to facilitate data transfer between low-voltage ASICs/PLDs and higher voltage systems. It operates with a low voltage supply (VL) ranging from 1.65 to 3.6 V and a high voltage supply (Voc) from 1.65 to 5.5 V. The device supports a maximum data rate of 84 Mbps at VL=1.8V and Voc=3.3V.
| Data rate (max) | 84 Mbps |
|---|---|
| Low voltage supply range | 1.65 to 3.6 V |
| High voltage supply range | 1.65 to 5.5 V |
| Package type | QFN16 |
| Package dimensions | 2.6 x 1.8 mm |
| ESD performance | +2 kV HBM |
No, it provides bi-directional level translation without a direction control pin.
When the Voc supply is off, all outputs are placed in high impedance mode.
Yes, it is ideal for mobile phones and other mobile devices.