HCF40109BEY [STMicroelectronics]

HCF40109B is a monolithic integrated circuit fabricated in Metal Oxide Semiconductor technology, available in DIP and SOP packages. It contains four low-to-high voltage level shifting circuits that shift low-voltage digital-logic input signals (A, B, C, D) to higher voltage output signals (E, F, G, H). Unlike other level shifters, it does not require the high voltage supply (VDD) to be applied before the low-voltage supply (VCC) or input signals, with no restrictions on the sequence or relative magnitudes of supply voltages and input signals within maximum ratings. It can also operate as a high-to-low level shifter when VCC > VDD. The device features individual three-state output capability with separate enable controls.