SN74HC373DWE4

SN74HC373DWE4 Application Field and Working Principle

The SN74HC373DWE4 is a logic device belonging to the Latches category. It is a wired-OR octal D-type flip-flop with 3-state outputs. Its enhanced design minimizes the loading of adjacent nodes, allowing the peripheral circuits to remain unaffected by the loading delays.

The SN74HC373DWE4 features eight individual flip-flops with common clock and data inputs. The 3-state outputs are controlled by an active-low latch-enable line (LE). LE can be used as a data-enable input to activate the output-enable control line, which is common for all outputs. When the LE pin is low, the data is latched and all outputs assume the 3-state but when the LE pin is high, the data is disabled and all outputs remain in the high-impedance state.

The output characteristics are synchronized with the falling edge of the clock. The asynchronous reset clears the flip-flops and sets the outputs in the high-impedance state. An overvoltage lock out circuit prevents any false triggering in excessive electrical noise environments. The inputs are TTL compatible and the output voltage is 5V compatible.

The SN74HC373DWE4’s wide supply voltage range, low power consumption and high noise immunity makes it a reliable and versatile component. It is specifically designed to control power-hungry output buffers since it features enhanced buffer loading.

It is suitable for applications that involve periphery circuits such as microprocessor systems, intelligent equipment, computers, communications and other industrial control applications.

Applications

• Microprocessor systems
• Intelligent equipment
• Computers
• Communications
• Industrial control applications

Working Principle

The SN74HC373DWE4 is comprised of eight individual flip-flops with common clock and data inputs, plus an active-low latch-enable pin (LE). When the LE pin is low, data is latched and all outputs assume the 3-state. When the LE pin is high, the data is disabled and all outputs remain in the high-impedance state. The features of the SN74HC373DWE4 provide the foundations for a versatile logic device with a range of applications.

The output characteristics are synchronized with the falling edge of the clock. An asynchronous reset clears the flip-flops and sets the outputs in the high-impedance state. The inputs are TTL compatible and the output voltage is 5V compatible. The SN74HC373DWE4 uses an overvoltage lock out circuit to prevent any false triggering in excessive electrical noise environments.

The SN74HC373DWE4 is widely used in microprocessor systems, intelligent equipment, computers, communications and industrial control applications, due to its high level of functionality and reliability. Its wide supply voltage range, low power consumption, and high noise immunity makes it suitable for high-end logic applications.

Overall, the SN74HC373DWE4 is a high-speed, low-power, and high-noise immune octal D-type flip-flop, ideal for sophisticated and complex logic designs.