74LVC138ABQ,115

The 74LVC138ABQ from Nexperia is an inverting 3-to-8 line decoder/demultiplexer. It decodes three binary weighted address inputs (A0, A1, A2) to eight mutually exclusive outputs (Y0 to Y7). The device features three enable inputs (E1, E2, E3) for flexible control and expansion capabilities.

With a wide supply voltage range from 1.2 V to 3.6 V, the 74LVC138ABQ can interface with both 3.3 V and 5 V systems, making it ideal for mixed-voltage environments. Its inputs are overvoltage tolerant up to 5.5 V, and Schmitt-trigger action ensures tolerance to slower input rise and fall times.

This decoder/demultiplexer is available in a 16-DHVQFN package with a surface mount type. It operates across a temperature range of -40°C to 125°C. The device is well-suited for applications such as memory chip select decoding and can be used for demultiplexing by utilizing one of the active-low enable inputs as the data input.

Key features include CMOS low power consumption, direct interface with TTL levels, and demultiplexing capability. The multiple input enable function allows for easy parallel expansion to create larger decoders, such as a 1-of-32 decoder using four 74LVC138A ICs and one inverter.