The SN54LS293J is a 4-bit binary counter manufactured by Rochester Electronics. It is a member of the 54LS series of low-power Schottky TTL logic devices. This device integrates four master-slave flip-flops and additional gating to provide a divide-by-2 and a divide-by-8 counter in a single package.

Applications

• Frequency Dividers: Used to divide the frequency of an input signal, providing lower frequency outputs.
• Digital Clocks and Timers: Employed in digital clock circuits to count time intervals.
• Sequence Generators: Utilized to generate specific sequences of binary numbers.
• Control Systems: Integrated into control systems for counting events or time periods.
• Instrumentation: Found in test and measurement equipment for counting and timing applications.

Features

• 4-Bit Binary Counter: Provides four flip-flops configured as a binary counter.
• Divide-by-2 and Divide-by-8 Counter: Integrates a divide-by-2 and a divide-by-8 counter in a single package.
• Low-Power Schottky TTL: Operates with low power consumption, suitable for energy-sensitive applications.
• Asynchronous Clear Input: Provides an asynchronous clear input to reset the counter to zero.
• Wide Operating Temperature Range: Typically specified for the military temperature range (-55°C to +125°C).
• Through-Hole Package: Available in a through-hole package for easy prototyping and testing.
• TTL Compatibility: Compatible with other TTL (Transistor-Transistor Logic) devices.

Benefits

• Simplified Circuit Design: Integrates two counters in a single package, simplifying circuit design.
• Reduced Component Count: Lowers the number of discrete components required, saving space and cost.
• Versatile Counting Options: Offers both divide-by-2 and divide-by-8 counting options for flexible applications.
• Easy Integration: TTL compatibility allows seamless integration with other TTL logic devices.

Additional Details

The SN54LS293J operates with a supply voltage of 5V. The counter can be cleared asynchronously using the clear input. The output logic levels are compatible with TTL standards. This device is often used in applications where frequency division or binary counting is required, such as in digital clocks, timers, and control systems.