The DM7495N is a 4-bit parallel-access shift register manufactured by National Semiconductor (now Texas Instruments). Being an END-OF-LIFE component, designers should consider alternatives for new designs. This device is a part of the widely used 7400 series of TTL (Transistor-Transistor Logic) integrated circuits, popular for their role in digital logic and computing systems.

Applications:

• Serial-to-parallel data conversion.
• Parallel-to-serial data conversion.
• Data storage and manipulation.
• Delay lines.
• Sequence generation.

Features:

• 4-bit capacity: Stores and shifts four bits of data.
• Parallel access: Allows data to be loaded in parallel into the register.
• Serial input: Accepts data serially for shift operations.
• Asynchronous clear: Clears the register independently of the clock signal.
• J-K serial input: Provides versatile serial data input control.

Benefits:

• Versatile data manipulation: Can be used for both serial-to-parallel and parallel-to-serial conversion.
• Simplified circuit design: Integrated shift register reduces component count.
• Flexible control: J-K serial input provides more control over data shifting.
• Efficient data storage: Allows for temporary storage of data bits.
• Easy to use: TTL compatibility simplifies integration with other logic circuits.

Additional Details:

The DM7495N operates on a 5V power supply and typically comes in a 14-pin DIP (Dual In-line Package). It uses a clock signal to control the shifting of data. The parallel inputs allow for loading data into the register simultaneously. The asynchronous clear input resets all the flip-flops in the register to a logic low state. The J-K serial input provides control over the serial data input, enabling various shift register operations. Consult the datasheet for specific electrical characteristics, such as propagation delays, input voltage levels, and output current drive capabilities. Given that this part is end-of-life, consider using more modern shift registers from the 74LS, 74HC, or 74HCT families, depending on your specific speed and power requirements. These newer devices offer similar functionality with improved performance and efficiency.