The ST2349A is a 4-bit dual supply level translator that 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. It utilizes transmission gate-based design that allows bi-directional level translation without a control pin. The ST2349A accepts a VL from 1.65 to 3.6 V and VCC from 1.80 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 ST2349A supports power down mode when VCC is turned off.
The ST2349A is a 4-bit dual supply level translator designed for bi-directional data transfer in multi-voltage systems. It operates with a low voltage supply (VL) ranging from 1.65V to 3.6V and a high voltage supply (Vcc) from 1.80V to 5.5V. The device features a tri-state output mode and a power-down function when the Vcc supply is off or the OE pin is low.
| Data rate (totem pole driver) | 18 Mbps (max) |
|---|---|
| Data rate (open drain driver) | 6.8 Mbps (max) |
| Quiescent current (max) | 8 µA |
| ESD performance | +2 kV HBM |
| Package type | QFN16 (2.6 x 1.8 mm) |
| Operating temperature | -40 to 85 °C |
Yes, the device may be driven by an open drain or totem pole driver.
No, it provides bi-directional level translation without a direction control pin.
When Vcc is off and the OE pin is low, the device is disabled and all I/Os are in high impedance.