74LVC1T45FZ4-7

The 74LVC1T45 can translate between any voltages from 1.65V to 5.5V.

The purpose of the 74LVC1T45 transceiver is to transmit a single logic bit across different voltage domains. It is a single bit, dual supply transceiver with 3-state outputs suitable for universal low-voltage translation between voltages ranging from 1.65V to 5.5V. The A input/output pin tracks VCCA while the B input/output tracks VCCB, allowing for voltage translation. The Direction pin (DIR) controls the direction of the transceiver, with the A pin becoming an input and the B pin becoming the output when a high logic level is applied to DIR, and vice versa when DIR is asserted low.

The Direction pin (DIR) in the 74LVC1T45 transceiver controls the direction of the transceiver. When a high logic level is applied to DIR, the A pin becomes an input, and the B pin becomes the output. Conversely, when DIR is asserted low, the roles of A and B are reversed. This allows for the transmission of a single logic bit across different voltage domains .