74ALVC08BQ,115 Equivalent & Substitute Parts

Part Overview

The 74ALVC08BQ,115 is a 4-channel AND gate logic IC manufactured by Nexperia USA Inc. in a 14-DHVQFN (2.5x3) surface mount package. This device operates across a 1.65V to 3.6V supply voltage range and is designed for low-power digital logic applications requiring AND gate functionality. The part is currently in Active product status with 3,647 units in stock. Substitute parts become necessary when the primary part reaches end-of-life, experiences supply constraints, or when design requirements favor alternative manufacturers with equivalent electrical and mechanical specifications.

Substiute Parts

74ALVC08BQ,115

Nexperia USA Inc.In Stock: 368474ALVC08BQ,115 Datasheet

Current PartRFQ

74VCX08BQX

onsemiIn Stock: 2411374VCX08BQX Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ALVC08BQ,115 is determined by strict equivalence across the following electrical and mechanical parameters:

Logic function equivalence: Both the main part and substitute must provide 4-channel AND gate functionality with 2 inputs per channel.

Electrical compatibility: Supply voltage range, quiescent current, output drive capability, input logic levels, and propagation delay must meet or exceed the original specification.

Package compatibility: The substitute must use a 14-pin surface mount package with exposed pad configuration suitable for the same PCB footprint or a compatible alternative.

Operating temperature range: The substitute must support the full -40°C to 85°C operating range.

Compliance and certification: Both parts must maintain ROHS3 compliance and MSL Level 1 rating for manufacturing compatibility.

The 74VCX08BQX from onsemi qualifies as a direct substitute based on these criteria, with compatible electrical performance and package specifications.

Parameter Comparison

Engineering Selection Recommendations

The 74ALVC08BQ,115 is the primary selection for new designs requiring an active, in-stock 4-channel AND gate with Nexperia manufacturing. Both parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing processes.

The 74VCX08BQX from onsemi serves as a qualified substitute when the primary part is unavailable or when design flexibility permits alternative sourcing. The onsemi part carries Last Time Buy status, indicating limited future availability. The 74VCX08BQX provides a wider minimum supply voltage range (1.2V versus 1.65V) and maintains electrical equivalence across all critical parameters including quiescent current, output drive, and operating temperature range.

Both parts are certified under EAR99 export classification and REACH unaffected status, meeting standard regulatory requirements for commercial applications.

Frequently Asked Questions (FAQ)

Q: Can the 74VCX08BQX directly replace the 74ALVC08BQ,115 on existing PCBs?

A: Yes. Both parts use identical 14-VFQFN exposed pad packages with the same pinout and electrical interface. No PCB modifications are required for substitution.

Q: What is the difference in propagation delay between these parts?

A: The 74ALVC08BQ,115 specifies 2ns maximum propagation delay at 3.3V with 50pF load. The 74VCX08BQX specifies 2.8ns maximum at 3.3V with 30pF load. The difference reflects different test conditions; both meet typical application timing requirements for standard logic circuits.

Q: Are there supply voltage compatibility concerns?

A: The 74ALVC08BQ,115 operates from 1.65V to 3.6V, while the 74VCX08BQX operates from 1.2V to 3.6V. For circuits operating above 1.65V, both parts are fully compatible. For applications requiring operation below 1.65V, only the 74VCX08BQX is suitable.

Q: What is the significance of the Last Time Buy status for the 74VCX08BQX?

A: Last Time Buy status indicates that onsemi will discontinue this part after a specified date. While currently available with 24,100 units in stock, long-term designs should prioritize the active 74ALVC08BQ,115 for sustained supply assurance.

Q: Do both parts require identical handling and storage conditions?

A: Yes. Both parts carry MSL Level 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Standard ESD precautions and room-temperature storage apply to both devices.

Q: Are there any differences in output drive capability?

A: No. Both parts provide identical output drive specifications of 24mA for both high and low states, ensuring equivalent fan-out and load-driving capability.