74HC14D/AUJ

Overview

The 74HC14D/AUJ is a hex inverting Schmitt trigger manufactured by Nexperia. It operates within a supply voltage range of 2.0 V to 6.0 V and utilizes CMOS technology for low power dissipation. The device features six independent inverters with Schmitt-trigger inputs, which transform slowly changing signals into sharply defined outputs. It includes input clamp diodes for interfacing with voltages exceeding VCC. The component complies with JEDEC standards JESD8C and JESD7A.

Feature Summary

• Schmitt-trigger inputs provide noise immunity and jitter-free output signals from slowly changing inputs
• Input clamp diodes enable direct interfacing to voltages exceeding the supply voltage using current limiting resistors
• High noise immunity and reduced input threshold levels allow compatibility with TTL logic levels
• Latch-up performance exceeds 100 mA per JESD 78 Class II Level B

Applications

• Wave and pulse shapers
• Astable multivibrators
• Monostable multivibrators

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature rating. Ensure the procurement channel sources products directly from authorized distributors or the manufacturer to guarantee authenticity. Confirm that the received components match the exact part number specifications regarding electrical characteristics and physical dimensions before integration.

Selection Notes

Select this component when signal conditioning is required for noisy environments or slow-rising waveforms. The Schmitt-trigger functionality is essential for applications demanding clean digital transitions from analog-like inputs. Verify that the operating voltage range aligns with the system's power supply constraints and that the SO14 package fits the available PCB footprint.

Part Context

This device belongs to the 74HC/HCT logic family, designed for high-speed CMOS operation. It serves as a standard interface component in digital circuits requiring inversion and signal shaping. The 'D' designation indicates the SO14 plastic small outline package variant, while the AUJ suffix typically denotes specific tape-and-reel packaging configurations for automated assembly.

Replacement Considerations

The 74HCT14D is a compatible alternative within the same datasheet offering TTL-compatible input thresholds. Other packages such as TSSOP14 (PW) or DHVQFN14 (BQ) are available if different form factors are required. Cross-reference pinouts and electrical limits carefully when substituting.