74HC14D/AUJ Equivalent & Substitute Parts

Part Overview

The 74HC14D/AUJ is a 6-channel inverter IC with Schmitt trigger inputs manufactured by NXP USA Inc. in a 14-SOIC surface mount package. This logic component is designed for signal inversion applications requiring hysteresis input characteristics. The part is currently in active production status with 1030 units in stock inventory.

Substitute parts are necessary when the primary part is unavailable, when specific packaging or qualification requirements must be met, or when sourcing from alternative manufacturers is required for supply chain optimization.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Features	Schmitt Trigger
Voltage - Supply	2V ~ 6V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	5.2mA, 5.2mA
Input Logic Level - Low	0.3V ~ 1.2V
Input Logic Level - High	1.5V ~ 4.2V
Max Propagation Delay @ 6V, 50pF	21ns
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC14D/AUJ is determined by the following critical parameters:

Logic Configuration: 6-channel inverter with 1 input per channel and Schmitt trigger functionality
Electrical Specifications: Supply voltage 2V ~ 6V, quiescent current maximum 2 µA, output current 5.2mA per channel, propagation delay 21ns @ 6V with 50pF load
Input/Output Thresholds: Input logic levels (Low: 0.3V ~ 1.2V, High: 1.5V ~ 4.2V)
Package Compatibility: 14-SOIC surface mount package with 0.154" width (3.90mm)
Environmental Compliance: ROHS3 compliance, MSL Level 1, operating temperature -40°C ~ 125°C

All substitute parts listed maintain these core electrical and mechanical parameters. Variations in packaging format (Tape & Reel vs. Cut Tape) and manufacturer-specific qualifications (such as AEC-Q100 automotive grade) do not affect functional substitutability.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Logic Type	Circuits	Voltage Supply	Quiescent Current (Max)	Output Current (High/Low)	Propagation Delay @ 6V, 50pF	Package	Packaging Format	Inventory
74HC14D/AUJ	NXP USA Inc.	Inverter	6	2V ~ 6V	2 µA	5.2mA, 5.2mA	21ns	14-SOIC	Surface Mount	1030 Pcs
74HC14D,653	Nexperia USA Inc.	Inverter	6	2V ~ 6V	2 µA	5.2mA, 5.2mA	21ns	14-SOIC	Cut Tape (CT) & Digi-Reel®	2200 Pcs
74HC14D-Q100,118	Nexperia USA Inc.	Inverter	6	2V ~ 6V	2 µA	5.2mA, 5.2mA	21ns	14-SOIC	Tape & Reel (TR)	14280 Pcs
74HC14S14-13	Diodes Incorporated	Inverter	6	2V ~ 6V	20 µA	5.2mA, 5.2mA	21ns	14-SOIC	Tape & Reel (TR)	1225 Pcs
SN74HC14QDRG4Q1	Texas Instruments	Inverter	6	2V ~ 6V	2 µA	5.2mA, 5.2mA	21ns	14-SOIC	Tape & Reel (TR)	3658 Pcs
SN74HC14QDRQ1	Texas Instruments	Inverter	6	2V ~ 6V	2 µA	5.2mA, 5.2mA	21ns	14-SOIC	Cut Tape (CT) & Digi-Reel®	3900 Pcs

Engineering Selection Recommendations

Primary Substitutes (Identical Quiescent Current)

The 74HC14D,653 (Nexperia), 74HC14D-Q100,118 (Nexperia), SN74HC14QDRG4Q1 (Texas Instruments), and SN74HC14QDRQ1 (Texas Instruments) maintain the 2 µA maximum quiescent current specification and are direct functional equivalents. Selection among these should be based on packaging format availability and inventory requirements. The Nexperia 74HC14D-Q100,118 offers the highest inventory level (14280 units) in Tape & Reel format. Texas Instruments variants include AEC-Q100 automotive qualification, suitable for automotive applications.

Secondary Substitute (Higher Quiescent Current)

The 74HC14S14-13 from Diodes Incorporated specifies a maximum quiescent current of 20 µA, which exceeds the primary specification by a factor of 10. This part remains functionally compatible for applications where quiescent current is not a critical design constraint. All other electrical and mechanical parameters are identical.

Compliance and Certification

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and operating temperature range of -40°C ~ 125°C. The Nexperia 74HC14D-Q100,118, SN74HC14QDRG4Q1, and SN74HC14QDRQ1 include AEC-Q100 automotive qualification, appropriate for automotive-grade applications.

Frequently Asked Questions (FAQ)

Q: Can 74HC14S14-13 be used as a direct replacement for 74HC14D/AUJ?

A: Yes. The 74HC14S14-13 maintains all critical electrical parameters including logic configuration, voltage supply range, output current, propagation delay, and package format. The quiescent current specification of 20 µA is higher than the 2 µA primary specification but does not affect functional compatibility in most applications.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is supplied on continuous tape for automated assembly processes. Cut Tape (CT) & Digi-Reel® packaging provides individual tape segments suitable for lower-volume or manual assembly operations. Both formats contain identical components in the same 14-SOIC package.

Q: Are the Texas Instruments variants suitable for automotive applications?

A: Yes. The SN74HC14QDRG4Q1 and SN74HC14QDRQ1 include AEC-Q100 automotive qualification, meeting automotive industry reliability and testing standards.

Q: Does the manufacturer affect functional compatibility?

A: No. All listed manufacturers (NXP, Nexperia, Diodes Incorporated, Texas Instruments) produce 74HC14 logic inverters to the same industry standard specifications. Functional compatibility is determined by electrical parameters and package format, not manufacturer identity.

Q: What inventory considerations should guide part selection?

A: The 74HC14D-Q100,118 offers the highest inventory availability at 14280 units. The SN74HC14QDRQ1 provides 3900 units with automotive qualification. Selection should balance availability against specific application requirements and qualification needs.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message