74HCT03DB-Q100J Equivalent & Substitute Parts

Part Overview

The 74HCT03DB-Q100J is a single-channel inverter logic IC manufactured by Nexperia USA Inc. in a 14-SSOP surface mount package. This component is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The part carries automotive-grade qualification (AEC-Q100) and operates across a 2V to 5.5V supply voltage range with a maximum propagation delay of 7ns at 5V with 50pF load.

Substiute Parts

74HCT03DB-Q100J

Nexperia USA Inc.In Stock: 118474HCT03DB-Q100J Datasheet

Current PartRFQ

74HCT03PW-Q100J

Nexperia USA Inc.In Stock: 83174HCT03PW-Q100J Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution analysis for the 74HCT03DB-Q100J is constrained by the following critical parameters:

• Logic Function: Single-channel inverter operation
• Package Type: 14-SSOP surface mount form factor
• Supply Voltage Range: 2V ~ 5.5V compatibility
• Automotive Qualification: AEC-Q100 certification required
• Output Drive Capability: 8mA output current (high and low)
• Propagation Delay: Maximum 7ns at 5V, 50pF load

The identified substitute part 74HCT03PW-Q100J shares the same base product number (74HCT03) and manufacturer, indicating common logic architecture. However, this substitute exhibits significant functional and packaging differences that must be evaluated against application requirements.

Parameter Comparison

Engineering Selection Recommendations

The 74HCT03PW-Q100J is listed as an active product with current manufacturing support, whereas the 74HCT03DB-Q100J is obsolete. Both components carry automotive-grade AEC-Q100 qualification and ROHS3 compliance, meeting regulatory requirements for automotive applications.

Direct functional substitution is not supported due to the following parameter deviations:

• Logic Function Mismatch: The substitute is a 4-channel NAND gate with 2 inputs per gate, whereas the main part is a single-channel inverter with 1 input.
• Supply Voltage Range Reduction: The substitute operates only at 4.5V ~ 5.5V, eliminating compatibility with the main part's 2V lower threshold.
• Output Drive Reduction: The substitute provides 4mA output low current versus 8mA on the main part.
• Propagation Delay Increase: The substitute exhibits 24ns delay at 4.5V compared to 7ns at 5V on the main part.
• Package Geometry Change: The substitute uses 14-TSSOP (4.40mm width) versus 14-SSOP (5.30mm width), requiring PCB layout modification.

Selection of the 74HCT03PW-Q100J requires confirmation that the application can accommodate reduced output drive capability, extended propagation delay, narrower supply voltage range, and alternative package footprint.

Frequently Asked Questions (FAQ)

Q: Can the 74HCT03PW-Q100J directly replace the 74HCT03DB-Q100J in existing designs?

A: No. The substitute part has different logic function (NAND gate vs. inverter), reduced output drive current (4mA vs. 8mA), narrower supply voltage range (4.5V-5.5V vs. 2V-5.5V), and different package dimensions (14-TSSOP vs. 14-SSOP). PCB layout modification and circuit redesign are required.

Q: Are both parts automotive-qualified?

A: Yes. Both the 74HCT03DB-Q100J and 74HCT03PW-Q100J carry AEC-Q100 automotive qualification and are ROHS3 compliant.

Q: What is the primary reason for seeking a substitute?

A: The 74HCT03DB-Q100J is classified as Obsolete. The 74HCT03PW-Q100J is an Active product with ongoing manufacturing support from Nexperia USA Inc.

Q: Will the package change affect PCB assembly?

A: Yes. The 14-TSSOP package (4.40mm width) is narrower than the 14-SSOP package (5.30mm width). PCB footprint redesign and revalidation are necessary.

Q: What are the critical parameter differences for application compatibility?

A: Supply voltage range (2V minimum vs. 4.5V minimum), output drive capability (8mA vs. 4mA low), propagation delay (7ns vs. 24ns), and logic function (inverter vs. NAND gate) are the primary differentiators requiring application-level evaluation.