Description
The ST2349 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. It utilizes transmission gate-based design that allows bidirectional level translation without a control pin.

Features
■ 45 Mbps (max) data rate when driven by a totem pole driver
■ 4 Mbps (max) data rate when driven by an open drain pole driver
■ Bi-directional level translation without direction control pin
■ Wide VL voltage range of 1.65 to 3.6 V
■ Wide VCC voltage range of 1.80 to 5.5 V
■ Power down mode feature – when either supply is off, all I/Os are in high impedance
■ Low quiescent current (max 24 µA)
■ Able to be driven by totem pole and open drain drivers
■ 5.5 V tolerant enable pin
■ ESD performance on all pins: ±2 kV HBM
■ Small package and footprint QFN16 (2.6 x 1.8 mm) package

Applications
■ Low voltage system level translation
■ Mobile phones and other mobile devices
■ I2C level translation
■ UART level translation