MM74HC573MTCX Equivalent & Substitute Parts

Part Overview

The MM74HC573MTCX is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring an 8:8 circuit configuration with tri-state output capability. This component operates across a 2V to 6V supply voltage range and is housed in a 20-TSSOP surface mount package. The part is currently active in production status with ROHS3 compliance and unlimited moisture sensitivity rating.

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, manufacturing discontinuation, or specific packaging and performance specifications.

Substiute Parts

MM74HC573MTCX

onsemiIn Stock: 4083MM74HC573MTCX Datasheet

Current PartRFQ

MC74HC573ADTG

onsemiIn Stock: 1747MC74HC573ADTG Datasheet

SimilarRFQ

74HC573PW,118

Nexperia USA Inc.In Stock: 99047074HC573PW,118 Datasheet

SimilarRFQ

SN74HC573ADBR

Texas InstrumentsIn Stock: 2164SN74HC573ADBR Datasheet

SimilarRFQ

SN74HC573APWR

Texas InstrumentsIn Stock: 53433SN74HC573APWR Datasheet

SimilarRFQ

SN74HC573APWT

Texas InstrumentsIn Stock: 3182SN74HC573APWT Datasheet

SimilarRFQ

SN74HC373APWR

Texas InstrumentsIn Stock: 3375SN74HC373APWR Datasheet

Parametric EquivalentRFQ

SN74HC373PWR

Texas InstrumentsIn Stock: 2479SN74HC373PWR Datasheet

Parametric EquivalentRFQ

SN74HC373PWT

Texas InstrumentsIn Stock: 2155SN74HC373PWT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MM74HC573MTCX are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes (Same Base Product - 74HC573): Parts sharing the identical base product number 74HC573 with matching circuit configuration (8:8), output type (tri-state), supply voltage range (2V ~ 6V), and output current specifications (7.8mA / 7.8mA). These parts may vary in propagation delay time, operating temperature range, packaging format (Tape & Reel vs. Cut Tape), and manufacturer.

Parametric Equivalents (74HC373 Series): Parts based on the 74HC373 product line that maintain identical electrical parameters including circuit configuration, output type, supply voltage, and output current. The 74HC373 represents a functionally equivalent latch variant within the same logic family.

Key parameters determining substitution eligibility:

• Circuit configuration (8:8)
• Output type (Tri-State)
• Supply voltage range (2V ~ 6V)
• Output current capability (7.8mA / 7.8mA)
• Package type (20-TSSOP or 20-SSOP)
• RoHS and REACH compliance status

Parameter Comparison

Engineering Selection Recommendations

For Active Production Applications: SN74HC573APWR (Texas Instruments) and 74HC573PW,118 (Nexperia USA Inc.) are preferred alternatives. Both maintain active product status with full ROHS3 compliance. The Nexperia part offers extended operating temperature range (-40°C to 125°C) and superior propagation delay performance (14ns) with significantly higher inventory availability (990,400 units).

For Extended Temperature Range Requirements: MC74HC573ADTG (onsemi) supports -55°C to 125°C operating range, suitable for industrial and automotive applications requiring broader thermal specifications.

For Package Compatibility: SN74HC573ADBR uses a 20-SSOP package (0.209", 5.30mm width) instead of the standard 20-TSSOP. This part is electrically equivalent but requires PCB layout adjustment due to increased package width.

For Parametric Equivalents: SN74HC373APWR and SN74HC373PWR provide functionally equivalent latch operation with identical electrical characteristics. SN74HC373APWR delivers faster propagation delay (12ns) compared to the main part (15ns).

Parts to Avoid in New Designs: SN74HC573APWT and SN74HC373PWT are discontinued at DiGi Electronics and should not be selected for new production designs despite remaining inventory availability.

Frequently Asked Questions (FAQ)

Q: Can I use SN74HC573ADBR as a direct replacement for MM74HC573MTCX?

A: SN74HC573ADBR is electrically equivalent but uses a 20-SSOP package (5.30mm width) versus the 20-TSSOP package (4.40mm width) of the MM74HC573MTCX. PCB footprint modification is required. All electrical parameters including supply voltage, output current, and tri-state capability remain compatible.

Q: What is the difference between 74HC573 and 74HC373 parts?

A: Both are D-Type Transparent Latch ICs with identical 8:8 circuit configuration, tri-state output, and electrical specifications. The primary distinction is the base product designation. Parts are functionally interchangeable when electrical parameters match.

Q: Is MC74HC573ADTG suitable for automotive applications?

A: MC74HC573ADTG supports an extended operating temperature range of -55°C to 125°C, which accommodates automotive thermal requirements. The part maintains ROHS3 compliance and unlimited moisture sensitivity rating. Verify specific automotive qualification requirements with the manufacturer.

Q: Why does 74HC573PW,118 have higher inventory than other substitutes?

A: The Nexperia part (74HC573PW,118) shows 990,400 units in stock, reflecting higher production volume and broader market distribution. This availability makes it a reliable choice for applications with extended lead time requirements.

Q: Can I use parts with different propagation delays interchangeably?

A: Propagation delay differences (ranging from 12ns to 26ns across available substitutes) may affect circuit timing performance. Applications with strict timing requirements should select parts with propagation delays matching or exceeding the original specification. The MM74HC573MTCX specifies 15ns; parts with 12ns to 15ns delays are preferred for timing-critical circuits.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the environmental compliance profile of the MM74HC573MTCX.