CD74HC423E

Multivibrators Overview

The CD74HC423E is a dual monostable multivibrator manufactured by Harris Corporation, belonging to the HC/UH series of high-speed CMOS logic. It features a 16-pin plastic DIP (PDIP-16) package and operates within a supply voltage range of 2V to 6V. The device supports an operating temperature range from -40°C to 85°C. Key electrical parameters include a propagation delay of 350 ns and a maximum static current of 2 µA. It functions as a single circuit with specific timing control capabilities.

Multivibrators Feature Summary

• Dual monostable multivibrator configuration with independent timing circuits
• Retriggerable operation allowing pulse width adjustment via external components
• Schmitt trigger inputs on both A and B terminals for noise immunity
• Buffered Q and Q outputs providing standard fanout capability

Multivibrators Applications

• Pulse generation and shaping in digital systems
• Timing delay circuits controlled by external RC networks
• Debouncing switches or contacts in logic interfaces
• Monostable triggering applications requiring retriggerable functionality

Multivibrators Procurement Notes

Verify component authenticity through manufacturer documentation or authorized distributor channels. Confirm package type matches the specified PDIP-16 format. Ensure supply voltage requirements align with system design constraints between 2V and 6V. Check temperature ratings against operational environment specifications. Validate RoHS compliance status if required by project standards.

Multivibrators Selection Notes

Select this component when a dual monostable multivibrator with Schmitt trigger inputs is required. Consider the HC series compatibility with 2V to 6V supply rails. Evaluate the need for retriggerable functionality versus non-retriggerable alternatives. Assess package size requirements against available PCB space. Verify input logic compatibility with driving source levels.

Multivibrators Part Context

The CD74HC423E belongs to the Harris CD74HC family of high-speed CMOS logic devices. It shares functional similarities with the CD74HC123 but differs in trigger edge sensitivity. The device is part of the broader 74HC logic line, offering balanced propagation delays and transition times. It provides significant power reduction compared to older LSTTL logic families while maintaining compatible output drive capabilities.

Multivibrators Replacement Considerations

Cross-reference with CD74HC123 for similar monostable functionality, noting differences in trigger edge handling. Verify pinout compatibility before substitution. Check supply voltage ranges and operating temperatures for equivalence.