Here's some information about the 74HC138:

Functionality: The 74HC138 is a decoder/demultiplexer that takes a 3-bit binary input and selects one of eight output lines based on that input. It can be used to decode a binary-coded input into one of eight mutually exclusive outputs.

DIP-16 Package: The "DIP-16" designation indicates that the 74HC138 is packaged in a Dual Inline Package with 16 pins.

Input Pins: The 74HC138 typically has three input pins (A0, A1, and A2) for the 3-bit binary input.

Output Pins: The IC has eight output pins (Y0 to Y7) representing the decoded outputs. Only one of these outputs is active (low) at a time based on the binary input.

Enable Pins: Some versions of the 74HC138 include an enable input (often labeled as "G" or "E") that allows you to enable or disable the operation of the decoder.

CMOS Technology: CMOS technology is known for its low power consumption and wide operating voltage range. The 74HC138 is compatible with both TTL (Transistor-Transistor Logic) and CMOS logic levels.

Power Supply: The 74HC138 typically operates with a wide range of power supply voltages.