74HC14DB,112

Overview

The 74HC14DB,112 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 features reduced input threshold levels for TTL logic interfacing. The device includes clamp diodes on inputs to allow current limiting resistors for voltages exceeding VCC. It transforms slowly changing signals into sharply defined outputs with hysteresis. The component is housed in an SO14 plastic small outline package (SOT108-1) and supports ambient temperatures from -40 °C to +125 °C.

Feature Summary

• Hex inverter configuration with Schmitt-trigger inputs for noise immunity
• Wide operating voltage range compatible with standard CMOS logic families
• Input clamp diodes enable safe interfacing with voltages higher than the supply rail

Applications

• Wave and pulse shapers
• Astable multivibrators
• Monostable multivibrators

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to confirm package type and temperature grade. Confirm RoHS compliance status as required by project specifications. Ensure the selected variant matches the intended PCB footprint and thermal management requirements before finalizing procurement.

Selection Notes

Select this component when signal conditioning with hysteresis is required to eliminate noise on digital lines. The HC series offers low power dissipation suitable for battery-operated applications. Verify that the input voltage levels match the source logic family, considering the specific threshold characteristics defined in the transfer characteristics section of the datasheet.

Part Context

This part belongs to the 74HC/HCT logic family, which provides high-speed CMOS performance with TTL-compatible inputs. The 'DB' designation indicates the SO14 surface-mount package. This family is widely used in general-purpose digital logic applications requiring reliable switching characteristics and broad supply voltage compatibility across industrial and commercial environments.

Replacement Considerations

Check for pin-compatible alternatives such as the 74HCT14DB if 5V-only operation is sufficient. Verify that any substitute maintains the same Schmitt trigger hysteresis characteristics and package dimensions to ensure mechanical fit without redesigning the PCB layout.