The National Semiconductor 54F13FMQB is a high-speed, low-power Schmitt-trigger hex inverter designed for use in a variety of digital applications. This device is part of the 54F series, which is known for its robust performance in military and aerospace environments, as well as in commercial applications. The 54F13FMQB is particularly valued for its ability to provide clean, fast signal transitions, making it suitable for interfacing with other digital logic families.

## Key Features

1. Schmitt-Trigger Inputs: The 54F13FMQB features Schmitt-trigger inputs that provide hysteresis, which helps to eliminate noise and ensure clean transitions between high and low states. This is particularly useful in applications where signal integrity is critical.

2. Hex Inverter Configuration: The device contains six independent inverters, allowing for versatile circuit design. Each inverter can be used to invert a single input signal, making it easy to create complex logic functions.

3. High-Speed Operation: The 54F13FMQB is designed for high-speed performance, with propagation delays typically around 4.5 ns at a supply voltage of 5V. This makes it suitable for high-frequency applications.

4. Low Power Consumption: The device operates with low power consumption, making it ideal for battery-powered applications. The typical supply current is around 1 mA, which helps to extend battery life in portable devices.

5. Wide Supply Voltage Range: The 54F13FMQB can operate over a wide supply voltage range, typically from 4.5V to 5.5V, allowing for flexibility in various circuit designs.

6. TTL Compatible: The device is compatible with TTL (Transistor-Transistor Logic) levels, making it easy to interface with other TTL logic devices.

7. Military Grade: As part of the 54F series, the 54F13FMQB is designed to meet military specifications, ensuring reliability and performance in harsh environments.

## Specifications

- Supply Voltage (Vcc): 4.5V to 5.5V
- Input Voltage Levels:
- Minimum High Level (VIH): 2.0V
- Maximum Low Level (VIL): 0.8V
- Output Voltage Levels:
- Minimum High Level (VOH): 2.5V (at Vcc = 5V)
- Maximum Low Level (VOL): 0.5V (at Vcc = 5V)
- Propagation Delay:
- Typical: 4.5 ns
- Maximum: 6.5 ns
- Power Dissipation:
- Maximum: 1.0 mW per gate
- Operating Temperature Range:
- Commercial: 0°C to 70°C
- Military: -55°C to 125°C
- Package Type: Available in a variety of packages, including the 14-pin Dual In-line Package (DIP) and surface mount options.

## Applications

The National Semiconductor 54F13FMQB is suitable for a wide range of applications, including:

- Digital Signal Processing: Used in circuits that require signal conditioning and noise reduction.
- Data Communication: Ideal for interfacing between different logic families in communication systems.
- Control Systems: Employed in control circuits where reliable signal inversion is necessary.
- Consumer Electronics: Utilized in various consumer electronic devices for logic control.

## Conclusion

The National Semiconductor 54F13FMQB is a versatile and reliable hex inverter with Schmitt-trigger inputs, making it an excellent choice for applications requiring high-speed and low-power operation. Its military-grade specifications ensure that it can withstand harsh environments, while its compatibility with TTL logic makes it easy to integrate into existing designs. Whether used in commercial or military applications, the 54F13FMQB provides robust performance and reliability, making it a valuable component in modern electronic systems.