Overview of STMicroelectronics 74ACT280MTR

The STMicroelectronics 74ACT280MTR is a high-speed, low-power, dual 4-input multiplexer/demultiplexer designed for use in digital circuits. This device is part of the 74ACT family, which is known for its advanced CMOS technology, providing high performance while maintaining low power consumption. The 74ACT280MTR is particularly suitable for applications in data routing, signal switching, and logic function implementation.

Key Specifications

- Supply Voltage (VCC): 4.5V to 5.5V
- Input Voltage Range: 0V to VCC
- Output Voltage Levels: 0V to VCC
- Maximum Input Current (IIN): ±1 µA (max)
- Maximum Output Current (IOUT): ±24 mA (max)
- Propagation Delay (tPD): 5 ns (typical at VCC = 5V)
- Operating Temperature Range: -40°C to 125°C
- Package Type: TSSOP (16-pin)

Functional Features

The 74ACT280MTR incorporates several functional features that enhance its performance and usability:

- Dual 4-Input Multiplexer/Demultiplexer: The device can be configured as either a multiplexer or a demultiplexer, allowing for flexible data routing in digital systems.
- High-Speed Operation: With a propagation delay of just 5 ns, the 74ACT280MTR is capable of handling high-speed data signals, making it suitable for fast digital applications.
- Low Power Consumption: The device operates with low power requirements, making it ideal for battery-powered and energy-efficient designs.
- TTL Compatibility: The 74ACT280MTR is compatible with TTL logic levels, allowing it to interface seamlessly with other digital components.

Applications

The 74ACT280MTR is widely used in various applications, including:

- Data Routing: Ideal for applications requiring the selection of one of several data sources, such as in communication systems and data multiplexing.
- Signal Switching: Used in systems where signals need to be switched between different paths, such as in audio and video equipment.
- Logic Function Implementation: Suitable for implementing complex logic functions in programmable logic devices and digital circuits.
- Consumer Electronics: Commonly found in devices such as televisions, set-top boxes, and audio systems where signal routing is essential.

Electrical Characteristics

The electrical characteristics of the 74ACT280MTR highlight its performance capabilities:

- Input Capacitance (CIN): 3.5 pF (typical)
- Output Capacitance (COUT): 7 pF (typical)
- Static Power Dissipation (PD): 0.1 mW (max at VCC = 5V)
- Dynamic Power Dissipation (Pdyn): 0.5 mW (typical at 10 MHz)

Thermal Performance

Thermal performance is critical for digital devices, especially in compact designs. The 74ACT280MTR has a thermal resistance of 50°C/W (junction-to-ambient), allowing it to operate efficiently under various load conditions without overheating. This characteristic is vital for applications where the device may be subjected to varying thermal conditions.

Conclusion

The STMicroelectronics 74ACT280MTR is a versatile and high-performance dual 4-input multiplexer/demultiplexer suitable for a wide range of digital applications. Its combination of high-speed operation, low power consumption, and flexibility in configuration makes it an excellent choice for engineers looking to implement efficient data routing and signal switching solutions. With its robust specifications and functionality, the 74ACT280MTR is a trusted component in both consumer electronics and industrial applications.