Texas Instruments

SN74ALS679DWE4  

Linear Comparators

SN74ALS679DWE4 Description

The SN74ALS679DWE4 is a 12-bit address comparator integrated circuit (IC) from Texas Instruments, designed for high-speed digital applications. This IC is part of the 74ALS series, known for its advanced Schottky TTL logic family, which offers high-speed performance with low power consumption. The SN74ALS679DWE4 is housed in a surface-mount 20SOIC package, making it suitable for compact and space-constrained designs. It operates within a supply voltage range of 4.5V to 5.5V and can function reliably in an ambient temperature range of 0°C to 70°C. The device features an active-high output, ensuring compatibility with a wide range of digital systems.

SN74ALS679DWE4 Features

• High-Speed Performance: With a maximum propagation delay of 30ns at 5V and a load capacitance of 50pF, the SN74ALS679DWE4 ensures rapid signal processing and comparison, making it ideal for high-speed digital applications.
• Robust Power Specifications: The IC operates within a voltage range of 4.5V to 5.5V, providing flexibility in power supply design. It also features a current output capability of 2.6mA for high-level outputs and 24mA for low-level outputs, ensuring reliable signal drive.
• Surface-Mount Technology: The 20SOIC package allows for easy integration into modern PCB designs, reducing the overall footprint and enhancing the mechanical stability of the circuit.
• Environmental Compliance: The SN74ALS679DWE4 is REACH unaffected and RoHS3 compliant, ensuring it meets stringent environmental standards and is suitable for use in a wide range of industries.
• Moisture Sensitivity Level: With an MSL rating of 1 (Unlimited), the device is highly resistant to moisture, making it suitable for use in various environmental conditions without the need for special handling or storage requirements.

SN74ALS679DWE4 Applications

The SN74ALS679DWE4 is particularly well-suited for applications requiring fast and accurate address comparison, such as in memory systems, microprocessors, and digital signal processing. Its high-speed performance and robust power specifications make it ideal for use in:

• Memory Systems: For comparing address lines in RAM and ROM systems, ensuring quick and accurate data retrieval.
• Microprocessors: In address decoding and comparison circuits, facilitating efficient data processing and control.
• Digital Signal Processing: For applications requiring rapid comparison of digital signals, such as in communication systems and control circuits.

Conclusion of SN74ALS679DWE4

The SN74ALS679DWE4 from Texas Instruments is a high-performance 12-bit address comparator IC that offers significant advantages in terms of speed, power efficiency, and environmental compliance. Its surface-mount package and robust power specifications make it a versatile choice for a variety of digital applications. While the product is now obsolete, it remains a reliable option for legacy systems and applications where its unique features and performance benefits are still highly valued. For new designs, engineers may consider exploring alternative models from Texas Instruments that build upon the legacy of the 74ALS series, offering enhanced performance and compatibility with modern digital systems.

SN74ALS679DWE4 Documents

Download datasheets and manufacturer documentation for SN74ALS679DWE4

Datasheets :

SN74ALS679      

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SN74ALS679