74HC221D,652

Overview

The NXP USA Inc. 74HC221D,652 is a dual monostable multivibrator integrated circuit belonging to the 74HC series of high-speed CMOS logic devices. It features two independent circuits per package, designed for surface-mount installation in SOIC-16 form factors. The device operates within a supply voltage range of 2V to 6V and supports a maximum operating temperature of +125°C with a minimum of -40°C. Propagation delay is specified at 75ns under a 50pF load condition.

Feature Summary

• Contains two independent monostable multivibrator circuits within a single package
• Utilizes high-speed CMOS technology compatible with standard TTL interfaces
• Supports surface-mount assembly via SOIC packaging configuration

Applications

• Timing pulse generation
• Delay line implementation
• Frequency division circuits

Procurement Notes

Verify the manufacturer designation carefully, as Nexperia holds the rights to the 74HCT/HC logic portfolio following the separation from NXP Semiconductors. Ensure the datasheet references align with current Nexperia specifications rather than legacy NXP documentation to confirm accurate electrical parameters and pinout definitions.

Selection Notes

Select this component when dual independent timing functions are required in space-constrained designs. The HC series offers wide voltage flexibility compared to HCT variants. Confirm that the SOIC-16 footprint matches the PCB layout requirements and that the 75ns propagation delay meets the system's timing constraints.

Part Context

This part belongs to the widely adopted 74HC family of digital logic components. These devices serve as fundamental building blocks for sequential logic operations in consumer electronics and industrial control systems. The specific monostable configuration allows for precise control over pulse widths without external oscillators.

Replacement Considerations

Direct substitutes include the Nexperia 74HC221D,652 and other manufacturers' equivalents such as SN74HC221N or MC74HC221ADR2G. Verify pin compatibility and electrical characteristics before substitution.