74HCT14DB,118

Overview

The 74HCT14DB,118 is a hex inverting Schmitt trigger manufactured by Nexperia. It belongs to the HCT logic family and features Schmitt-trigger inputs that transform slowly changing signals into sharply defined outputs. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an ambient temperature range from -40 °C to +125 °C. It is housed in a SO14 plastic small outline package (SOT108-1) with 14 leads.

Feature Summary

• Schmitt-trigger inputs provide noise immunity and jitter-free output signals for slowly changing input waveforms.
• CMOS low power dissipation characteristics suitable for energy-efficient designs.
• High noise immunity and unlimited input rise and fall times ensure reliable signal processing.
• Inputs include clamp diodes allowing interface to voltages exceeding VCC using current limiting resistors.

Applications

• Wave and pulse shapers
• Astable multivibrators
• Monostable multivibrators

Procurement Notes

Verify the specific ordering suffix

Selection Notes

Select this component when TTL-level interfacing is required alongside Schmitt-trigger noise filtering. The HCT series ensures compatibility with standard TTL logic levels while maintaining CMOS low power consumption. Ensure the application environment remains within the specified -40 °C to +125 °C operating temperature range for optimal performance.

Part Context

This part is part of the 74HCT14 family, which includes variants in different packages such as TSSOP14 (74HCT14PW) and DHVQFN14 (74HCT14BQ). All variants share the same hex inverting Schmitt trigger functionality but differ in physical footprint and thermal characteristics. The DB suffix specifically denotes the SO14 package type.

Replacement Considerations

Direct replacements include other 74HCT14 variants from Nexperia or compatible manufacturers offering hex inverters with Schmitt triggers in SO14 packages. Verify pinout compatibility and electrical specifications match the original design requirements before substitution.