74HC573 Octal D Flip-Flop IC (SOP-20) | 8-Bit Transparent Latch

The 74HC573 Octal D Flip-Flop IC (SOP-20) is an 8-bit transparent latch IC designed for digital logic, microcontroller, embedded systems, and electronics projects. It contains eight independent D-type latch circuits with 3-state outputs, making it useful for temporary data storage, bus interfacing, address/data multiplexing, and digital control applications.

This 74HC573 IC operates with high-speed CMOS logic and is commonly used with microcontrollers such as Arduino, ESP32, STM32, AVR, PIC, and other digital logic systems. The 3-state output feature allows multiple devices to share a common data bus when the output enable control is used properly.

The SOP-20 package provides a compact surface-mount solution for PCB designs where board space is important. It is suitable for students, electronics hobbyists, engineers, robotics developers, embedded-system designers, and DIY electronics projects in Bangladesh.

Whether you are building a digital logic circuit, microcontroller interface, data latch, LED display controller, memory interface, or bus-based electronic system, the 74HC573 provides eight channels of parallel data latching in a single IC.

Features:

• IC: 74HC573
• Function: Octal D-type transparent latch
• Number of channels: 8-bit
• Package: SOP-20
• Logic family: HC CMOS
• Output type: 3-state
• Parallel data storage: 8 bits
• Suitable for: Digital logic and embedded electronics
• Compact surface-mount package
• Useful for microcontroller and bus interface applications
• Suitable for Arduino, ESP32, STM32, AVR and PIC projects
• Ideal for electronics students, engineers, hobbyists and PCB designers

74HC573 Specifications

Note: Exact operating voltage, maximum ratings, propagation delay, input/output characteristics, and other electrical specifications can vary by manufacturer. Always check the datasheet for the exact 74HC573 part you purchase.

74HC573 Pinout

The 74HC573 is an 8-bit latch, providing eight data inputs and eight corresponding outputs.

When Latch Enable (LE) is active, the outputs can follow the corresponding data inputs. When LE becomes inactive, the previously captured data is retained. The Output Enable (OE) control determines whether the outputs are driven or placed into the high-impedance state.

What is 74HC573 IC?

The 74HC573 is an octal transparent latch containing eight D-type latch circuits in one IC. It can temporarily store an 8-bit data value and provide the stored value at its outputs.

Unlike a simple logic gate, a latch can retain data after the input signal changes. This makes the 74HC573 useful when a microcontroller or digital circuit needs to hold an 8-bit value for later use.

74HC573 Applications

The 74HC573 can be used in a wide range of electronics applications, including:

• Arduino projects
• ESP32 and STM32 projects
• AVR and PIC microcontroller interfaces
• 8-bit data storage
• Digital logic circuits
• Address/data bus interfacing
• LED display control
• Seven-segment display projects
• Robotics projects
• Embedded systems
• Parallel data interfaces
• Digital control systems
• Memory and peripheral interfacing
• PCB-based electronics projects
• Educational digital electronics experiments

Why Use 74HC573?

The main advantage of the 74HC573 is that it provides eight latching channels in a single compact IC. Instead of using separate logic components to temporarily hold multiple digital signals, designers can use one 74HC573 to store an entire 8-bit data value.

Its 3-state outputs are particularly useful in systems where several devices communicate over a shared data bus.