The CD54ACT253F3A is a dual 4-input multiplexer from Texas Instruments (originally Harris Corporation). It belongs to the advanced CMOS logic (ACT) family, known for its high speed and low power consumption.

Applications:

• Data selection
• Logic function generation
• Memory addressing
• Parallel-to-serial conversion
• Digital signal routing

Features:

• Dual 4-input multiplexers: Contains two independent 4-input multiplexers in a single package.
• High speed: Offers fast propagation delays for high-performance applications.
• Low power consumption: Minimizes power dissipation for energy-efficient systems.
• Wide operating voltage range: Operates from 4.5V to 5.5V.
• TTL compatible inputs: Can be driven by TTL logic signals.
• Military temperature range: Operates reliably over a wide temperature range (-55°C to +125°C).
• Ceramic DIP Package: Provides excellent hermeticity and reliability.

Benefits:

• Simplified logic design: Reduces the number of components required for complex logic functions.
• Improved system performance: High speed enables faster data processing.
• Reduced power consumption: Extends battery life in portable devices.
• Enhanced system reliability: Wide operating voltage and temperature ranges ensure robust performance in harsh environments.
• TTL compatibility: Seamless integration with existing TTL logic circuits.

Additional Details:

Each multiplexer in the CD54ACT253F3A has four data inputs (I0-I3), two select inputs (S0-S1), and an output (Y). The select inputs determine which of the four data inputs is routed to the output. An enable input (E) allows the output to be disabled, placing it in a high-impedance state.

The '54' in the part number indicates that it is the military temperature range version. The 'ACT' indicates the Advanced CMOS Technology family. The 'F3A' refers to the ceramic DIP package style and lead finish. Refer to the Texas Instruments datasheet for detailed specifications, timing diagrams, and application notes.