Texas Instruments

SN54HC139J  

Encoders, Decoders, Multiplexers & Demultiplexers

SN54HC139J Description

The SN54HC139J is a high-performance dual 2-line to 4-line decoder/demultiplexer from Texas Instruments, designed for a wide range of digital logic applications. This device features two independent circuits, each capable of decoding two input lines into four output lines. The SN54HC139J operates on a single supply voltage ranging from 2V to 6V, making it highly versatile for various power supply configurations. It is available in a through-hole package, which ensures robust mechanical stability and ease of integration into printed circuit boards.

The SN54HC139J is part of the 54HC series, known for its high-speed CMOS technology that combines the speed of NMOS with the low power consumption of CMOS. This device is REACH unaffected and RoHS3 compliant, ensuring it meets the stringent environmental and safety standards required by modern electronics manufacturing. The device offers a maximum output current of 5.2mA for both high and low states, providing reliable signal handling capabilities.

SN54HC139J Features

• Independent Circuits: The SN54HC139J features two independent 2-line to 4-line decoder/demultiplexer circuits, allowing for simultaneous operation of two separate decoding functions within a single package.
• Circuit Configuration: Each circuit is configured as a 1 x 2:4 decoder/demultiplexer, providing a compact solution for applications requiring multiple decoding paths.
• Mounting Type: The through-hole mounting type ensures secure and reliable mechanical attachment to the PCB, making it suitable for applications where mechanical stability is critical.
• Voltage Supply Source: The single supply voltage range of 2V to 6V offers flexibility in power supply design, accommodating a variety of power sources.
• Output Current: The device supports a maximum output current of 5.2mA for both high and low states, ensuring robust signal handling and compatibility with a wide range of downstream components.
• Environmental Compliance: The SN54HC139J is REACH unaffected and RoHS3 compliant, ensuring it meets the latest environmental and safety standards, making it suitable for use in environmentally conscious designs.
• Moisture Sensitivity Level: The device is not moisture-sensitive, eliminating the need for special handling procedures during assembly and storage.

SN54HC139J Applications

The SN54HC139J is ideal for a variety of applications where efficient signal decoding and demultiplexing are required. Its dual independent circuits make it particularly useful in applications where multiple decoding functions are needed simultaneously. Some specific use cases include:

• Digital Signal Processing: In digital signal processing systems, the SN54HC139J can be used to decode multiple input signals into a larger number of output lines, simplifying the design and reducing the number of required components.
• Memory Address Decoding: The device is well-suited for memory address decoding in microcontroller and microprocessor systems, where it can efficiently decode address lines to select specific memory locations.
• Peripheral Control: In embedded systems, the SN54HC139J can be used to control multiple peripherals by decoding control signals, enabling efficient and reliable peripheral management.
• Data Multiplexing: The demultiplexer function of the SN54HC139J allows for the distribution of a single input signal across multiple output lines, making it ideal for data multiplexing applications in communication systems.

Conclusion of SN54HC139J

The SN54HC139J from Texas Instruments is a versatile and reliable dual 2-line to 4-line decoder/demultiplexer that offers significant advantages over similar models. Its dual independent circuits, wide voltage supply range, and robust through-hole package make it suitable for a wide range of applications in the electronics industry. The device's compliance with environmental standards and its ability to handle significant output currents further enhance its appeal for use in modern electronic designs. Whether used in digital signal processing, memory address decoding, peripheral control, or data multiplexing, the SN54HC139J provides a high-performance solution that meets the demands of today's complex electronic systems.

SN54HC139J Documents

Download datasheets and manufacturer documentation for SN54HC139J