SN74HC109DR

The SN74HC109DR is a dual D-type flip-flop integrated circuit (IC) manufactured by Texas Instruments. It belongs to the 74HC (High-speed CMOS) family, which is known for its high-speed operation and low power consumption. The device is designed for use in a variety of digital applications, including data storage, signal processing, and timing circuits.

Key Features:

1. Dual D-Type Flip-Flops: The SN74HC109DR contains two independent D-type flip-flops, which can be used to store one bit of data each. The flip-flops are edge-triggered, meaning they change their output state based on the input signal at the rising or falling edge of the clock signal.

2. Clock Input: Each flip-flop has a clock (CLK) input that triggers the state change. The device can be configured to respond to either the rising edge or the falling edge of the clock signal, depending on the specific application requirements.

3. Asynchronous Set and Reset: The SN74HC109DR features asynchronous set (PRE) and reset (CLR) inputs for each flip-flop. This allows for immediate control of the output state, independent of the clock signal. When the set input is activated, the output is set to high (1), and when the reset input is activated, the output is set to low (0).

4. High-Speed Operation: The device operates at high speeds, with a maximum propagation delay of around 15 nanoseconds at a supply voltage of 5V, making it suitable for high-frequency applications.

5. Low Power Consumption: The SN74HC109DR is designed to operate with low power consumption, making it ideal for battery-powered devices and energy-efficient applications.

6. Wide Supply Voltage Range: The IC can operate over a supply voltage range of 2V to 6V, providing flexibility for various circuit designs.

7. TTL Compatibility: The SN74HC series is compatible with TTL (Transistor-Transistor Logic) levels, allowing it to interface with other TTL devices in a mixed-logic environment.

8. Package Type: The SN74HC109DR is available in a small, surface-mount SOIC (Small Outline Integrated Circuit) package, which is suitable for compact PCB designs. The "DR" suffix indicates that it is in a tape-and-reel packaging format, making it convenient for automated assembly processes.

Applications:

• Data storage and transfer in digital circuits
• Frequency division and signal timing applications
• State machines and control logic
• Memory elements in digital systems

Electrical Characteristics:

• Input Voltage Levels: The input high voltage (VIH) is typically around 3.5V for a 5V supply, while the input low voltage (VIL) is around 1.5V.
• Output Voltage Levels: The output high voltage (VOH) is typically close to the supply voltage, while the output low voltage (VOL) is close to ground.
• Operating Temperature Range: The device is rated for operation in a temperature range of -40°C to +125°C, making it suitable for industrial and automotive applications.

In summary, the SN74HC109DR is a versatile and efficient dual D-type flip-flop IC that offers high-speed performance, low power consumption, and a range of features suitable for various digital applications. Its design and specifications make it a popular choice among engineers and designers in the field of electronics.