74HC273N,652

Overview

The 74HC273N,652 is an octal positive-edge triggered D-type flip-flop manufactured by Nexperia. It features a common clock and master reset input, with outputs assuming the state of corresponding data inputs on the LOW-to-HIGH clock transition. The device operates within a supply voltage range of 2 V to 6 V and supports a maximum frequency of 20 MHz at nominal supply. It includes clamp diodes on inputs for interfacing with voltages exceeding VCC using current-limiting resistors. The component is housed in a 20-pin PDIP package and functions as a single-function logic IC.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops within a single integrated circuit
• Positive-edge triggering mechanism synchronized by a common clock signal
• Master reset functionality that forces all outputs low independently of clock and data states
• Input clamp diodes enabling safe interface with external voltages higher than the supply rail

Applications

• Parallel-to-serial data conversion circuits
• Shift register implementations requiring edge-triggered storage
• General-purpose digital memory storage elements
• Timing control systems utilizing master reset synchronization

Procurement Notes

Verify the manufacturer designation carefully, as the product line formerly belonged to NXP Semiconductor before becoming Nexperia B.V. Confirm the specific ordering suffix matches the required packaging and compliance standards. Ensure compatibility with existing schematic designs referencing the original brand name. Check for any recent lifecycle status updates regarding availability or obsolescence warnings from the current supplier.

Selection Notes

Select this component when an octal storage solution with a global reset is required. It is suitable for applications needing CMOS-level input compatibility and operation across a wide voltage range. Consider the propagation delay characteristics relative to system timing requirements. Verify that the DIP-20 package fits the available board space and manufacturing constraints.

Part Context

This part belongs to the 74HC series of high-speed CMOS logic devices. It is functionally similar to other octal D-type flip-flops like the 74HC374 but lacks tri-state outputs. The device is designed for general-purpose digital logic applications where reliable data latching and resetting are essential. It complements other 74HC family components for building complex sequential logic systems.

Replacement Considerations

Direct substitutes include the 74HCT273N for TTL-compatible input levels. Other compatible parts may include variants from different manufacturers offering identical pinouts and logical functions. Verify electrical specifications such as output drive current and propagation delay before swapping.