The TC4017BF is a 5-Stage Johnson Counter manufactured by Toshiba Semiconductor and Storage. This CMOS logic device is designed to implement a Johnson counter, which is a type of shift register with feedback. It features ten decoded outputs, providing a sequential output pattern suitable for various control and display applications. The device includes a clock input, a reset input, and an output carry signal that allows cascading multiple TC4017BF devices for longer counting sequences.

Applications:

• Sequential lighting control
• Stepping motor control
• Sequence generation
• Event counters
• Digital display drivers

Features:

• 5-Stage Johnson Counter: Provides a unique sequential output pattern.
• Ten Decoded Outputs: Offers ten distinct decoded outputs, each active in sequence.
• Clock Input: Advances the counter with each clock pulse.
• Reset Input: Resets the counter to its initial state.
• Output Carry: Facilitates cascading multiple counters for extended counting ranges.
• CMOS Logic: Low power consumption and high noise immunity.

Benefits:

• Simplified Sequencing: Provides a straightforward method for generating sequential control signals.
• Reduced Component Count: Integrates the functionality of a Johnson counter into a single package.
• Easy Cascading: Output carry allows for easy expansion of the counting range.
• Low Power Consumption: Suitable for battery-powered applications.
• High Noise Immunity: CMOS logic provides reliable operation in noisy environments.

Additional Details:

The TC4017BF comes in a Flat Package. The counter advances one step on each positive-going clock edge. The decoded outputs are active-high, meaning that only one output is high at any given time. The reset input, when activated, resets the counter to its initial state, where output 0 is high and all other outputs are low. The output carry signal goes high when the counter completes a full cycle, enabling cascading. Detailed timing diagrams, truth tables, and electrical characteristics can be found in the device datasheet.