The document describes the features and characteristics of a 4-bit dual supply level translator called ST2349. It has a data rate of 90 Mbps (max) when driven by a totem pole driver and 8 Mbps (max) when driven by an open drain pole driver. It supports bi-directional level translation without a direction control pin. The device operates at a wide VL voltage range of 1.65 to 3.6 V and VCC voltage range of 1.80 to 5.5 V. It has a power down mode feature where all I/Os are in high impedance when either supply is off. The device has low quiescent current (max 24 µA) and can be driven by both totem pole and open drain drivers. It also has a 5.5 V tolerant enable pin and ESD performance of ±2 kV HBM on all pins. The device comes in a small QFN16 (2.6 x 1.8 mm) package.
The ST2349 is a 4-bit dual supply level translator designed to facilitate data transfer in multi-voltage systems. It utilizes a transmission gate-based design that allows bi-directional level translation without requiring a direction control pin, making it suitable for connecting low-voltage ASICs/PLDs to higher voltage systems. The device supports both totem pole and open drain drivers and features a tri-state output mode to disable all outputs when the OE pin is low.
| Data rate (totem pole driver) | 90 Mbps (max) |
|---|---|
| Data rate (open drain driver) | 8 Mbps (max) |
| V_ voltage range | 1.65 to 3.6 V |
| Vcc voltage range | 1.80 to 5.5 V |
| ESD performance (HBM) | +2 kV |
| 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.
The maximum data rate is 90 Mbps.