The M74LS253P is a Dual 4-Input Multiplexer with 3-State Outputs manufactured by Mitsubishi. This device selects one of four data inputs from each of its two independent multiplexer sections based on the select input signals. The selected data is then routed to the output. The 3-state outputs allow for multiple devices to share the same data bus, as the output can be in a high-impedance state when disabled.

Applications

• Data selection and routing
• Address decoding
• Parallel-to-serial conversion
• Implementing logic functions
• Memory addressing

Features

• Dual 4-input multiplexers: Contains two independent 4-input multiplexer sections in a single package.
• 3-state outputs: Allows for bus sharing and tri-state logic implementations.
• Low-power Schottky TTL (LS-TTL) technology: Offers a balance between speed and power consumption.
• Separate enable inputs: Each multiplexer section has its own enable input for independent control.
• DIP-16 package: Easy to prototype and integrate into existing circuits.

Benefits

• Versatile data selection: Provides a flexible way to select one of four data inputs.
• Bus compatibility: 3-state outputs enable easy interfacing with data buses.
• Reduced component count: Two multiplexers in one package save space and cost.
• Reliable performance: LS-TTL technology provides stable and consistent operation.
• Easy to use: Standard DIP package simplifies prototyping and integration.

Additional Details

The M74LS253P is controlled by two select inputs (A and B) that determine which of the four inputs is routed to the output for each multiplexer section. When the enable input is high, the output is disabled (high-impedance state). The device requires a 5V supply voltage. Detailed electrical characteristics such as propagation delay, power dissipation, and input/output voltage levels can be found in the Mitsubishi datasheet. This IC is housed in a 16-pin DIP (Dual In-line Package) suitable for breadboarding and through-hole PCB mounting. It's commonly used in digital systems requiring data selection and bus interfacing.