74VHC573MX Equivalent & Substitute Parts

Part Overview

The 74VHC573MX 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, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The 20-SOIC package and specified electrical characteristics define the substitution parameters for this logic device.

Substiute Parts

74VHC573MX

onsemiIn Stock: 101574VHC573MX Datasheet

Current PartRFQ

MC74VHC573DWR2G

onsemiIn Stock: 2940MC74VHC573DWR2G Datasheet

MFR RecommendedRFQ

74VHC573M

Fairchild SemiconductorIn Stock: 147574VHC573M Datasheet

UpgradeRFQ

SN74AHC573DWR

Texas InstrumentsIn Stock: 4642SN74AHC573DWR Datasheet

DirectRFQ

74AHC573D,118

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

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74AHC573D-Q100J

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

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74VHC573MX is determined by the following critical parameters: logic type (D-Type Transparent Latch), circuit configuration (8:8), output type (tri-state), supply voltage compatibility (2V ~ 5.5V minimum), output current capability (8mA minimum for both high and low states), package type (20-SOIC), and mounting method (surface mount). Parts meeting these criteria across all parameters are classified as direct equivalents. Parts with extended operating temperature ranges or automotive qualifications are classified as upgrades. Parts from alternative manufacturers with identical electrical specifications are classified as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

For direct replacement of the obsolete 74VHC573MX in standard industrial applications, MC74VHC573DWR2G (onsemi) and SN74AHC573DWR (Texas Instruments) are active equivalents meeting all specified electrical and package requirements. Both parts maintain ROHS3 compliance and identical supply voltage and output current specifications.

For applications requiring extended operating temperature capability (-40°C to 125°C), 74AHC573D,118 (Nexperia USA Inc.) provides upgraded thermal performance while maintaining all other critical parameters.

For automotive applications requiring AEC-Q100 qualification, 74AHC573D-Q100J (Nexperia USA Inc.) is the appropriate selection, offering both extended temperature range and automotive-grade certification.

74VHC573M (Fairchild Semiconductor) is listed as an active product but lacks complete parameter specification in available documentation, limiting its direct recommendation without additional technical verification.

Frequently Asked Questions (FAQ)

Q: Can MC74VHC573DWR2G directly replace 74VHC573MX without circuit modification?

A: Yes. MC74VHC573DWR2G meets all critical substitution parameters: identical logic type, circuit configuration, output type, supply voltage range, output current capability, and 20-SOIC package. Both parts are ROHS3 compliant and operate within the same temperature range.

Q: What is the difference between 74VHC573MX and SN74AHC573DWR?

A: Both parts are functionally equivalent D-Type Transparent Latch ICs with 8:8 configuration and tri-state output in 20-SOIC packages. The primary difference is manufacturer: 74VHC573MX is onsemi (obsolete), while SN74AHC573DWR is Texas Instruments (active). SN74AHC573DWR offers faster propagation delay (1ns versus 4.5ns).

Q: Why should I consider 74AHC573D,118 over MC74VHC573DWR2G?

A: 74AHC573D,118 extends the operating temperature range to -40°C ~ 125°C compared to -40°C ~ 85°C for MC74VHC573DWR2G. Select this part only if your application requires operation at temperatures above 85°C.

Q: Is 74AHC573D-Q100J suitable for consumer electronics?

A: 74AHC573D-Q100J is qualified to AEC-Q100 automotive standards. While it functions in consumer applications, it is optimized for automotive use. For non-automotive applications, standard industrial-grade equivalents (MC74VHC573DWR2G or SN74AHC573DWR) are appropriate.

Q: Are all substitute parts available in the same packaging format?

A: All recommended substitutes use 20-SOIC surface mount packages. Packaging options (Cut Tape, Tape & Reel, Bulk) vary by manufacturer and supplier, but the physical package footprint and pinout remain identical across all equivalents.

Q: What compliance certifications apply to these substitute parts?

A: All recommended substitutes maintain ROHS3 compliance and REACH unaffected status. 74AHC573D-Q100J additionally carries AEC-Q100 automotive qualification. ECCN and HTSUS classifications are identical across all parts.