Texas Instruments

SN74LS109AD  

Flip Flops

SN74LS109AD Description

The SN74LS109AD is a dual JK-type flip-flop designed by Texas Instruments, a leading manufacturer in the electronics industry. This logic IC chip is part of the 74LS series and is housed in a surface-mount package, specifically a 16-pin SOIC (Small Outline Integrated Circuit). It is designed to operate within a supply voltage range of 4.75V to 5.25V and features a maximum propagation delay of 40ns at 5V with a maximum load capacitance of 15pF. The SN74LS109AD is optimized for high-speed operation with a clock frequency of up to 33 MHz, making it suitable for a variety of digital applications.

SN74LS109AD Features

• High-Speed Operation: With a clock frequency of up to 33 MHz, the SN74LS109AD ensures fast and efficient data.
  processing- Complementary Outputs: The flip-flop provides complementary outputs, enhancing flexibility in circuit design.
• Positive Edge Triggering: The SN74LS109AD is triggered on the positive edge of the clock signal, ensuring precise timing control.
• Set and Reset Functionality: The device includes set (preset) and reset functions, allowing for easy initialization and control of the flip-flop states.
• Low Quiescent Current: The IC operates with a quiescent current of only 8 mA, making it energy-efficient.
• Robust Output Current: The flip-flop can handle an output current of 400µA for high-level outputs and 8mA for low-level outputs, ensuring reliable performance.
• Compliance and Safety: The SN74LS109AD is REACH unaffected and RoHS3 compliant, meeting environmental and safety standards. It also has a moisture sensitivity level (MSL) of 1, indicating it is suitable for unlimited storage and handling.
• Wide Operating Temperature Range: The device operates within a temperature range of 0°C to 70°C (TA), making it suitable for various conditions environmental.

SN74LS109AD Applications

The SN74LS109AD is ideal for applications that require high-speed, reliable digital signal processing. Its dual JK-type flip-flops make it suitable for:

• Digital Counters: The flip-flops can be used to build binary or other types of counters.
• Registers: The set and reset functions allow for easy implementation of shift registers and storage elements.
• Clock Management: The positive edge triggering and complementary outputs make it suitable for clock signal management and synchronization.
• Data Storage and Transfer: The device can be used in systems where data needs to be stored temporarily and transferred reliably.
• Sequential Logic Circuits: The SN74LS109AD is well-suited for designing sequential logic circuits that require precise state control.

Conclusion of SN74LS109AD

The SN74LS109AD is a versatile and high-performance dual JK-type flip-flop that offers significant advantages over similar models. Its high-speed operation, complementary outputs, and positive edge triggering make it an excellent choice for a wide range of digital applications. The device's low quiescent current and robust output current capabilities ensure energy efficiency and reliability. Compliance with environmental and safety standards further enhances its suitability for modern electronic systems. Whether used in digital counters, registers, clock management, data storage, or sequential logic circuits, the SN74LS109AD provides a reliable and efficient solution for digital signal processing needs.

SN74LS109AD Documents

Download datasheets and manufacturer documentation for SN74LS109AD

Datasheets :

SN54/74(LS)109(A)      

PCN Obsolescence/ EOL :

Mult Dev EOL 30/Aug/2023      

HTML Datasheet :

SN54/74(LS)109(A)      

PCN Design/Specification :

Mult Devices Font 21/Apr/2018       Design 25/Feb/2022