ON Semiconductor 74AC109 Dual JK Positive Edge-Triggered Flip-Flop

The 74AC109 from ON Semiconductor is a high-performance, dual JK flip-flop integrated circuit featuring individual J, K, clock (CLK), set (SET), and reset (RESET) inputs for each flip-flop. Designed for use in a wide range of applications, this device is a staple in digital electronics where reliable edge-triggered sequential logic is required.

Key Features:

• Edge-Triggered Dual Flip-Flops: Each flip-flop is independently controlled by its own clock signal, enabling precise timing and sequence management in digital circuits.
• Positive-Edge Triggering: The flip-flops are triggered on the rising edge of the clock signal, which helps in synchronizing operations in high-speed systems.
• Asynchronous Set and Reset: The SET and RESET inputs are asynchronous, allowing the flip-flops to be set or cleared independently of the clock signal for immediate control.
• High-Speed Operation: The 74AC109 is designed for very high-speed operation, making it suitable for applications that require fast data processing and throughput.
• Standardized Symmetrical Output Characteristics: With symmetrical output impedance, the device ensures balanced drive levels, which is crucial for maintaining signal integrity.
• Multiple Package Options: Available in various package types, including SOIC, TSSOP, and PDIP, to suit different board layouts and assembly techniques.
• Wide Operating Temperature Range: The device can function over a broad temperature range, making it versatile for use in diverse environmental conditions.

Applications:

The 74AC109 is ideal for a multitude of applications that require reliable flip-flop operations, such as:

• Counters and dividers
• Control registers
• Data storage elements
• Toggle circuits
• Pulse shaping and timing circuits

Technical Specifications:

With its advanced CMOS technology, the 74AC109 provides a combination of high speed and low power consumption. The device operates from a single power supply ranging from 2V to 6V, and it is compatible with TTL levels. The output drive capability is 24 mA at the high and low levels, and the typical t<sub>pd is 8 ns at 5V.

For designers and engineers looking for a reliable and efficient dual JK flip-flop, the ON Semiconductor 74AC109 offers a robust solution that can be integrated into a wide array of digital systems.