Please note: While we strive for accuracy in our descriptions and images, the actual color and appearance of the items may vary slightly from the photographs due to lighting conditions or varying computer monitor settings.

74HC273 Octal D-Type Flip-Flop with Reset IC - 20-Pin DIP Package

K-TECHNICS
Out of stock
KSh0.00

Secure checkout

Friendly support

Hassle-free returns

When your digital circuit needs to store a full byte of data, you typically reach for an octal D-type flip-flop. While the 74HC574 is famous for its 3-state outputs used on shared data buses, the 74HC273 takes a different approach. This 20-pin integrated circuit contains eight D-type flip-flops that share a common clock, but instead of an output enable pin, it features a master asynchronous Reset pin.

Every time the clock signal transitions from Low to High, all eight input pins are instantly read and locked into memory on the eight output pins. The true power of the 74HC273 lies in its Master Reset (Clear) pin. Pulling this active-Low pin to Ground instantly wipes all eight outputs back to zero, completely ignoring the clock and data inputs. Because the outputs are standard push-pull logic rather than tri-state, they are always active, making this chip ideal for directly driving LEDs, displays, or downstream logic gates where you need a guaranteed zero state on startup.

Key Features & Functional Advantages

  • 8-Bit Parallel Operation: Captures and stores a complete byte of data instantly across 8 parallel lines on a single clock pulse.

  • Asynchronous Master Reset: Features a dedicated active-Low clear pin that instantly forces all eight outputs to Ground, ensuring safe hardware initialization.

  • Positive Edge-Triggered: Data is securely latched exactly on the rising edge of the clock signal, preventing data corruption from noisy inputs.

  • Always-Active Outputs: Standard push-pull outputs continuously drive downstream components without the need to manage an output enable line.

  • High-Speed CMOS Architecture: Delivers rapid nanosecond switching speeds while drawing virtually zero idle current across a wide 2.0V to 6.0V range.

Perfect For

  • Hardware State Machines: The standard memory block for building custom logic sequencers that require a hard reset condition.

  • LED and Display Buffers: Excellent for holding an 8-bit pattern steady to drive control panel indicator lights.

  • Safe Startup Circuits: Crucial for applications like motor controllers where you must guarantee all control lines are pulled Low the moment power is turned on.

  • Shift Register Expansion: Can be paired with multiplexers to create custom, resettable serial-to-parallel data converters.

Technical Specifications

  • Logic Family: 74HC High-Speed CMOS

  • Logic Function: Octal D-Type Flip-Flop with Reset

  • Number of Bits: 8

  • Trigger Type: Positive Edge

  • Output Type: Standard Push-Pull (Always Active)

  • Operating Supply Voltage: 2.0V to 6.0V DC

  • Package Case: 20-DIP 0.300 inch width

  • Mounting Type: Through-Hole

Ensure your order is placed by 2PM to guarantee next-day delivery! Our commitment to prompt service includes a 24-hour delivery system through our network of carriers, aimed at ensuring your package arrives right on schedule.

Please note, a delivery fee of €4.99 applies for orders under €50. For those in remote areas, be aware that our couriers may apply an extra surcharge. This additional fee helps cover the costs of transporting your items to harder-to-reach locations.