HCF40109M013TR_1220105

HCF40109B is a monolithic integrated circuit fabricated in Metal Oxide Semiconductor technology available in DIP and SOP packages. HCF40109B contains four low-to-high voltage level shifting circuits. Each circuit will shift a low-voltage digital-logic input signal (A, B, C, D) with logical 1 = V_CC and logical 0 = V_SS to a higher voltage output signal (E, F, G, H) with logical 1 =V_DD and logical 0 = V_SS. HCF40109B, unlike other low-to-high level-shifting circuits, does not require the presence of the high voltage supply (V_DD) before the application of either the low-voltage supply (V_CC) or the input signals. There are no restrictions on the sequence of application of V_DD,V_CC, or the input signals. In addition, there are no restrictions on the relative magnitudes of the supply voltages or input signals within the device maximum ratings; V_CC may exceed V_DD, and input signals may exceed V_CC and V_DD. When operated in the mode V_CC V_DD, HCF40109B will operate as a high-to-low level-shifter. HCF40109B also features individual three-state output capability. A low level on any of the separately enabled three-state output controls produces a high-impedance state in the corresponding output.