Device Overview:

️· Function: The 74ACT138 is a high-speed 3-to-8 line decoder/demultiplexer. It takes 3 input lines and selects one of 8 output lines.
️· Technology: It uses Advanced CMOS Technology (ACT) for high speed and low power consumption.

Key Features:

️· Inputs: 3 Select inputs (A0, A1, A2).
️· Outputs: 8 decoded outputs (Y0-Y7).
️· Enable Input: A single Enable (G) input controls all outputs.
️· Logic Levels: Designed for 3.3V and 5V operation.
️· Speed: Fast propagation delays.
️· Package Options: Available in Plastic DIP-16, SO-16, and TSSOP16 packages.

Electrical Characteristics (Important parameters):

️· Supply Voltage (Vcc): 3.3V to 5.5V
️· Operating Temperature: -40°C to +85°C
️· Input Voltage: Specified ranges for high and low level inputs
️· Output Drive: Specified current sinking/sourcing capabilities.
️· Propagation Delay: Specifies how quickly the outputs respond to changes in the inputs.

Applications:

️· Address decoders
️· Data routers
️· Multiplexing/Demultiplexing
️· Memory selection
️· Data distribution

Additional Information:

️· Detailed electrical characteristics tables
️· Timing diagrams and waveforms
️· Mechanical dimensions of various package options
️· Important disclaimers and legal information regarding the use of the device.



In essence, this datasheet provides all the technical details needed to properly design with and use the STMicroelectronics 74ACT138 in electronic circuits.