The M74LS197P is a Decade/Binary Counter manufactured by Mitsubishi. This monolithic counter contains four master-slave flip-flops and additional gating to provide a divide-by-two counter and a divide-by-five counter. It features individual clock inputs for each counter section, allowing for independent or cascaded operation.

Applications

• Frequency dividers
• Digital clocks
• Timing circuits
• Counter applications
• Digital controllers

Features

• Divide-by-two and divide-by-five counters
• Individual clock inputs
• Asynchronous master reset
• High-speed operation
• Operating temperature range: 0°C to +70°C

Benefits

• Versatile counting capabilities: The combination of divide-by-two and divide-by-five counters provides flexibility in frequency division and counting applications.
• Simplified timing circuit design: The device simplifies the design of timing circuits by providing readily available counting functions.
• Independent operation: The individual clock inputs allow for independent operation of each counter section.
• Efficient reset function: The asynchronous master reset allows for easy resetting of the counter to a known state.

Additional Details

The M74LS197P operates from a 5V power supply and is available in a 14-pin DIP (Dual In-line Package). The maximum clock frequency is typically 25 MHz. The master reset input is active low and overrides the clock inputs.