74VHC573M Equivalent & Substitute Parts

Part Overview

The 74VHC573M is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring 1 channel with 8:8 circuit configuration and tri-state output capability. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The 74VHC series operates across a 2V to 5.5V supply voltage range with a 4.5ns propagation delay and is housed in a 20-SOIC package. Substitute parts must maintain electrical compatibility while meeting current availability and compliance requirements.

Substiute Parts

74VHC573M

onsemiIn Stock: 144374VHC573M Datasheet

Current PartRFQ

SN74AHC573DW

Texas InstrumentsIn Stock: 2266SN74AHC573DW Datasheet

DirectRFQ

74AHC573D,118

Nexperia USA Inc.In Stock: 275174AHC573D,118 Datasheet

UpgradeRFQ

74AHC573D-Q100J

Nexperia USA Inc.In Stock: 103574AHC573D-Q100J Datasheet

SimilarRFQ

SN74AHC573NSR

Texas InstrumentsIn Stock: 103547SN74AHC573NSR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74VHC573M is determined by strict alignment across the following critical parameters: logic type (D-Type Transparent Latch), circuit configuration (8:8), output type (tri-state), supply voltage range (2V ~ 5.5V), independent circuits (1), output current specifications (8mA high and low), package type (20-SOIC), and compliance certifications (ROHS3, REACH Unaffected).

The substitute parts are grouped as follows:

Direct Manufacturer Substitute: SN74AHC573DW (Texas Instruments) maintains identical electrical specifications with improved propagation delay (1ns vs. 4.5ns) and equivalent mechanical compatibility.

Upgrade Substitute: 74AHC573D,118 (Nexperia USA Inc.) offers active product status with extended operating temperature range (-40°C ~ 125°C) and faster propagation delay (3.9ns), supplied on Tape & Reel.

Similar Substitutes: 74AHC573D-Q100J (Nexperia USA Inc., automotive-qualified AEC-Q100) and SN74AHC573NSR (Texas Instruments, high inventory availability) provide equivalent functionality with active product status and enhanced specifications.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring immediate component availability with active product status, 74AHC573D,118 (Nexperia) or SN74AHC573NSR (Texas Instruments) are preferred selections. Both maintain full electrical compatibility with the 74VHC573M while offering superior propagation delay performance and ROHS3 compliance.

The 74AHC573D-Q100J variant is specified for automotive applications requiring AEC-Q100 qualification and extended operating temperature range (-40°C ~ 125°C). This part is suitable for designs with thermal stress considerations.

SN74AHC573DW (Texas Instruments) provides direct substitution with discontinued status; inventory availability should be confirmed before design implementation.

All substitute parts maintain identical supply voltage specifications (2V ~ 5.5V), output current ratings (8mA), tri-state output configuration, and 20-SOIC package footprint compatibility, ensuring drop-in replacement capability within the specified electrical operating envelope.

Frequently Asked Questions (FAQ)

Q: Can the 74AHC573D,118 directly replace the 74VHC573M in existing designs?

A: Yes. Both parts share identical logic type (D-Type Transparent Latch), circuit configuration (8:8), tri-state output, supply voltage range (2V ~ 5.5V), output current specifications (8mA), and 20-SOIC package footprint. The 74AHC573D,118 offers improved propagation delay (3.9ns vs. 4.5ns) and extended operating temperature range (-40°C ~ 125°C), making it a compatible upgrade.

Q: What is the difference between the 74AHC573D,118 and 74AHC573D-Q100J?

A: Both parts are manufactured by Nexperia and share identical electrical specifications. The 74AHC573D-Q100J includes AEC-Q100 automotive qualification and is intended for automotive-grade applications. The 74AHC573D,118 is the standard industrial variant.

Q: Why does SN74AHC573NSR have a different package width specification?

A: SN74AHC573NSR is specified with a 20-SOIC package width of 0.209" (5.30mm) versus the standard 0.295" (7.50mm) width. This represents a narrower SOIC variant. PCB layout compatibility must be verified before substitution, as the reduced width may affect footprint alignment on existing designs.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (SN74AHC573DW, 74AHC573D,118, 74AHC573D-Q100J, and SN74AHC573NSR) are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the compliance profile of the 74VHC573M.

Q: Which substitute offers the best propagation delay performance?

A: SN74AHC573DW and SN74AHC573NSR both offer 1ns propagation delay, compared to 4.5ns for the 74VHC573M. The 74AHC573D,118 and 74AHC573D-Q100J provide 3.9ns propagation delay. Selection depends on timing-critical application requirements and product availability constraints.