The DM74LS298N is a Quad 2-Input Multiplexer with Storage from Fairchild Semiconductor (now ON Semiconductor). It combines multiplexing and storage functions, making it suitable for applications requiring temporary data storage and selection. Each of the four multiplexers can select one of two data inputs, and the selected data can be stored in an internal latch.

Applications

• Data routing and storage: Select and store data from multiple sources.
• Shift registers: Can be configured as a basic shift register.
• Sample-and-hold circuits: Temporarily store analog or digital signals.
• Control systems: Select and store control signals for various system components.
• Digital displays: Store and select data for driving display devices.

Features

• Quad 2-input multiplexers: Contains four independent 2-input multiplexers in a single package.
• Storage latches: Each multiplexer has an associated latch for storing the selected data.
• 3-state outputs: Provides 3-state outputs for bus-oriented systems.
• Low power consumption: Utilizes Low-Power Schottky technology for reduced power consumption.
• High speed: Offers relatively fast switching speeds for general-purpose applications.

Benefits

• Reduced component count: Combines multiplexing and storage functions in a single package, reducing board space and cost.
• Simplified system design: 3-state outputs simplify connection to common bus systems.
• Improved system performance: Low power consumption reduces heat generation and improves overall system reliability.
• Increased flexibility: Latches provide temporary data storage capability.
• Versatile functionality: Can be used in a wide variety of applications requiring data selection and storage.

Additional Details

The DM74LS298N operates from a single 5V power supply. It is typically available in a 16-pin DIP (Dual In-line Package). The select input determines which of the two data inputs is routed to the multiplexer output. The latch enable input controls the storage of the selected data in the internal latch. The 3-state outputs allow for easy connection to bus systems without loading the bus when the device is not actively driving the bus. The low-power Schottky technology ensures efficient operation and minimizes power consumption.