74HC14D,653

Overview

The Nexperia 74HC14D,653 is a hex inverting Schmitt trigger integrated circuit manufactured by Nexperia USA Inc. It operates within a supply voltage range of 2.0 V to 6.0 V and features six independent inverters with Schmitt-trigger inputs. The device utilizes CMOS technology for low power dissipation and high noise immunity. It is housed in a 14-lead plastic small outline package (SO14) with a body width of 3.9 mm. The component supports an ambient operating temperature range from -40 °C to +125 °C.

Feature Summary

• Schmitt-trigger inputs transform slowly changing signals into sharply defined jitter-free outputs
• Reduced input threshold levels allow interfacing to TTL logic levels
• Inputs include clamp diodes enabling current limiting resistors for voltages exceeding VCC
• ESD protection exceeds 2000 V per HBM and 1000 V per CDM standards

Applications

• Wave and pulse shapers
• Astable multivibrators
• Monostable multivibrators

Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature rating. Confirm RoHS compliance status and REACH SVHC declarations against current regulatory requirements. Ensure the procurement channel provides valid traceability documentation. Check for any recent product change notices that may affect pinning or specifications before finalizing orders.

Selection Notes

Select this component when slow input signal transitions require hysteresis to prevent output oscillation. The reduced input thresholds facilitate direct interfacing with TTL logic families without additional level shifting. Verify that the SO14 package dimensions fit the available PCB footprint. Ensure the application environment remains within the specified -40 °C to +125 °C operating temperature range.

Part Context

This part belongs to the 74HC series of high-speed CMOS logic devices. It is functionally compatible with Low-power Schottky TTL (LSTTL) logic standards. The device is designed for general-purpose digital applications requiring noise immunity and signal conditioning. It is distinct from the 74HCT variant which has different voltage operating ranges.

Replacement Considerations

Public confirmed substitute part numbers: 74HCT14D,653.