The M74LS90P is a decade counter manufactured by Mitsubishi. This integrated circuit belongs to the 74LS family, characterized by its low-power Schottky TTL (Transistor-Transistor Logic) technology. The M74LS90P is a monolithic counter designed to perform a variety of counting functions. It consists of four master-slave flip-flops internally connected to provide either a divide-by-2 counter and a divide-by-5 counter. It's commonly used to implement decade and binary counters.

Applications

• Frequency counters: Used to count the frequency of input signals.
• Digital clocks and timers: Employed as a basic building block for constructing digital clocks and timer circuits.
• Event counters: Applied in event counting applications, such as counting the number of occurrences of a specific event.
• Digital displays: Used in conjunction with decoder drivers to display numerical counts on digital displays.
• Industrial control systems: Incorporated in various industrial control systems for counting and timing functions.

Features

• Decade counter: Provides a decade (divide-by-10) counting function.
• Binary counter: Can also be configured as a divide-by-2 and divide-by-5 counter.
• Reset inputs: Features reset inputs to initialize the counter to a specific state.
• Low-power Schottky TTL: Operates with low power consumption while maintaining TTL compatible input and output levels.
• Asynchronous operation: Utilizes asynchronous counting operation.

Benefits

• Versatile counting functions: Offers flexible counting options with decade and binary counting capabilities.
• Simplified counter design: Reduces component count and simplifies the design of counting circuits.
• Easy initialization: Reset inputs allow for easy initialization of the counter.
• Low power consumption: Suitable for power-sensitive applications due to its low power consumption.
• Reliable operation: Provides reliable counting operation.

The M74LS90P typically comes in a 14-pin DIP (Dual In-line Package). It operates from a 5V power supply and is designed to function within the standard operating temperature range for TTL devices. Consult the device's datasheet for detailed electrical characteristics, such as propagation delays, input/output voltage levels, and reset timing requirements.