The DM74S197N is a high-speed, fully programmable 69 MHz 4-bit binary counter from Texas Instruments (originally National Semiconductor). This device is a monolithic counter containing 4 master-slave flip-flops and additional gating to provide a divide-by-two counter and a divide-by-eight counter. The DM74S197N features asynchronous clear inputs and can be used in a wide variety of counting and frequency division applications.

Applications

• Frequency Dividers
• Binary Counters
• Digital Clocks
• Timing Circuits
• Address Generation

Features

• Asynchronous Clear Inputs: Simplifies resetting the counter to zero.
• Divide-by-Two and Divide-by-Eight Counters: Offers flexible counting options.
• High-Speed Operation: Typical clock frequency of 69 MHz.
• TTL Compatibility: Directly interfaces with other TTL logic devices.
• J-K Inputs: Provide versatile control over counter operation.
• Package: DIP-14

Benefits

• Flexible Counting Solutions: Offers a range of counting options through divide-by-two and divide-by-eight capabilities.
• Simplified Resetting: Asynchronous clear inputs enable easy resetting of the counter to a known state.
• High-Speed Performance: Suitable for applications requiring fast counting or frequency division.
• Easy Integration: TTL compatibility allows for direct connection with other TTL logic devices.
• Versatile Control: J-K inputs provide greater control over counter operation, allowing for more complex counting sequences.

Technical Specifications

The DM74S197N is a TTL-compatible device. The maximum clock frequency is typically 69 MHz. The device features asynchronous clear inputs. The device comes in a DIP-14 package.