Is there a pin-compatible replacement for SN74HC14PWR?

Several parts like SN74AHC14PWR and SN74HC04PWR are pin-compatible in the TSSOP-14 package. However, none are exact electrical drop-in replacements. Critical differences like input type (Schmitt-trigger vs. standard) or voltage range must be reviewed.

What risks should I check before replacing SN74HC14PWR?

The most critical risk is ensuring the replacement has Schmitt-trigger inputs if your circuit relies on them for noise filtering or handling slow-rising signals. Also, verify the supply voltage range and logic family characteristics are compatible.

SN74HC14PWR Alternatives, Datasheet & Cross Reference | Texas Instruments

SN74HC14PWR is a popular hex Schmitt-trigger inverter from Texas Instruments in a TSSOP-14 package. When seeking alternatives, it's critical to match the Schmitt-trigger input function and the 2V to 6V operating range.

AI replacement insight

Electrical riskhigh

Substituting with a non-Schmitt-trigger part can cause logic errors or oscillations.

Package risklow

The TSSOP-14 package and its pinout are standardized for this function.

Can it be replaced directly?

No exact drop-in replacement was found. SN74AHC14PWR is functionally similar but has a slightly lower maximum voltage rating (5.5V vs 6V).

Best replacement path

The closest alternative is SN74AHC14PWR, which also has Schmitt-trigger inputs, but requires checking if the system voltage exceeds 5.5V.

Main risk

The main risk is substituting with a standard inverter (like a 74HC04) which lacks the Schmitt-trigger's noise immunity, potentially causing circuit malfunction.

Recommended alternatives

A faster Schmitt-trigger inverter from the same manufacturer with a wider temperature range but slightly lower max voltage.

View details

Alternative comparison matrix

Feature / factor	SN74HC14PWR	SN74AHC14PWR	SN74HC04PWR	Compatibility / risk
Function	Inverter, Schmitt Trigger	Inverter, Schmitt Trigger	Inverter	Inverter, Schmitt Trigger — Functionally identical.; SN74HC04PWR: Candidate lacks the critical Schmitt-trigger input.
Package	TSSOP-14	TSSOP-14	TSSOP-14	TSSOP-14 — Package and pin count match.; SN74HC04PWR: Package and pin count match.
Voltage	2 V to 6 V	2 V to 5.5 V	2 V to 6 V	2 V to 5.5 V / 2 V to 6 V — Candidate has a slightly lower maximum supply voltage.; SN74HC04PWR: Supply voltage range matches.
Temperature	-40°C to 85°C	-40°C to 125°C	-40°C to 85°C	-40°C to 125°C / -40°C to 85°C — Candidate has a wider operating temperature range.; SN74HC04PWR: Operating temperature range matches.

Application & sourcing insights

Questions & answers

SN74AHC14PWR is the best functional alternative, offering Schmitt-trigger inputs in the same package. However, its maximum supply voltage is 5.5V, slightly lower than the target's 6V, which must be verified for your application.