ST4G3234BJR [STMicroelectronics]

The ST4G3234 is a dual supply low voltage CMOS 4-BIT BUS BUFFER level translator fabricated with sub-micron silicon gate and five-layer metal wiring C2MOS technology. Designed for use as an interface between a 3.3V bus and a 2.5V or 1.8V bus in mixed supply systems (e.g., 3.3V/1.8V, 3.3V/2.5V, 1.8V/1.4V, 2.5V/1.8V), it achieves high speed operation while maintaining CMOS low power dissipation. This IC is intended for one-way asynchronous communication between data buses, with input and output power down protections that isolate buses when both supplies are down. Input tolerant buffers allow voltage translation of VCCB-compatible signals and greater signals up/down to VCCA.