Texas Instruments

SN74HC138PWR  

Encoders, Decoders, Multiplexers & Demultiplexers

The SN74HC138PWR is a high-performance 3-to-8 line decoder/decoder with enable (3-state) and active-low outputs from Texas Instruments. It is a member of the 74HC series of logic devices, which are known for their high-speed performance and low power consumption. Here's a brief description of the model, its features, and potential applications:

Description:

The SN74HC138PWR is a complex logic device that can be used to decode a 3-bit binary input into one of eight possible outputs. It is designed to be used in digital circuits where multiple outputs need to be controlled based on a single input signal.

Features:

1. 3-to-8 Line Decoder: It takes three binary input signals and decodes them to provide one active output among eight possible outputs.
2. Enable Input: An active-low enable input allows the entire device to be disabled, reducing power consumption when not in use.
3. Active-Low Outputs: The outputs are active-low, meaning that the output is low when the corresponding input condition is met.
4. 3-State Outputs: The outputs can be placed in a high-impedance state (3-state) when the outputs are not active, allowing for bus structures without contention.
5. High-Speed Performance: Being part of the 74HC series, the device offers high-speed operation suitable for fast digital systems.
6. Low Power Consumption: The device is designed for low power consumption, making it suitable for battery-powered or energy-sensitive applications.
7. Wide Operating Voltage Range: It operates over a wide range of supply voltages, making it versatile for different power supply environments.

Applications:

1. Digital Logic Systems: Used in the design of digital logic circuits for signal routing and control based on input conditions.
2. Microcontroller I/O Expansion: To expand the number of outputs controlled by a microcontroller without increasing its package complexity.
3. Display Drivers: For driving multiple segments in a display system, such as LED or LCD displays.
4. Address Decoders: In memory systems to decode address lines for memory chip selection.
5. Signal Routing: In communication systems for routing signals based on input conditions.
6. Automotive Electronics: For control systems in vehicles where reliability and speed are critical.
7. Industrial Control Systems: For managing complex control systems in industrial applications.

The SN74HC138PWR is a versatile logic device that can be integrated into a wide range of digital systems requiring efficient signal decoding and routing capabilities.

SN74HC138PWR Documents

Download datasheets and manufacturer documentation for SN74HC138PWR

PCN Assembly/Origin :

Mult Dev A/T 16/Mar/2021      

Datasheets :

SN54HC138, SN74HC138      

PCN Packaging :

Reels 19/Apr/2018       Reel 10/Jul/2018      

PCN Design/Specification :

Design 22/Feb/2022