CD4514 4-bit latched/4-to-16-line decoder

The CD4514 4-bit latched/4-to-16-line decoder is a digital logic device that converts a 4-bit binary input into one of 16 discrete output lines, with a latch function to hold the selected output state. Designed for use in address decoding, memory selection, multiplexing control, display driving, and other selection or routing tasks, this decoder simplifies system design by providing clear one-hot outputs corresponding to the binary input code.

This latched decoder accepts a 4-bit input and provides a single active output among sixteen output lines. The latch feature allows the input state to be captured and maintained independent of changes at the input, enabling stable outputs for timing-sensitive applications. The device typically includes enable/disable control(s) to gate decoding operation and supports easy cascading for expanded decode ranges when larger address spaces or more outputs are required.

Engineers commonly use the CD4514 in digital systems where deterministic selection is required. Typical use cases include memory page selection, peripheral enable lines, channel selection in data routing, and LED or segment driving where a single line must be asserted from many possibilities. The latch function is helpful in situations that require temporary storage of the selection state or glitch-free output transitions during input changes.

The CD4514 integrates seamlessly with standard logic families and can be incorporated into both prototyping and production designs where a straightforward 4-to-16 decode with latching is needed.