SN74LVC573APWG4 Equivalent & Substitute Parts

Part Overview

The SN74LVC573APWG4 is a D-Type Transparent Latch logic IC manufactured by Texas Instruments, featuring an 8:8 circuit configuration with tri-state output capability in a 20-TSSOP surface mount package. This part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts must maintain electrical compatibility across supply voltage, propagation delay, output current, operating temperature range, and package specifications to ensure direct replacement capability in existing designs.

Substiute Parts

SN74LVC573APWG4

Texas InstrumentsIn Stock: 1237SN74LVC573APWG4 Datasheet

Current PartRFQ

SN74LVC573APW

Texas InstrumentsIn Stock: 8686SN74LVC573APW Datasheet

MFR RecommendedRFQ

74LVC573APW,118

Nexperia USA Inc.In Stock: 766074LVC573APW,118 Datasheet

MFR RecommendedRFQ

MC74LCX573DTG

onsemiIn Stock: 2994MC74LCX573DTG Datasheet

MFR RecommendedRFQ

MC74LCX573DTR2G

onsemiIn Stock: 3438MC74LCX573DTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters: logic type (D-Type Transparent Latch), circuit configuration (8:8), output type (tri-state), package type (20-TSSOP), and compliance certifications (ROHS3, MSL-1). Substitute parts must support the supply voltage range of the original part or exceed it. Propagation delay and output current specifications must meet or exceed the original part's performance. Operating temperature range may be extended without restriction. All substitute parts identified maintain identical package dimensions and mounting type (surface mount, 20-TSSOP).

Parameter Comparison

Engineering Selection Recommendations

SN74LVC573APW (Texas Instruments) provides direct functional equivalence as an active product with identical electrical specifications and packaging. This part maintains the same supply voltage range, propagation delay, and operating temperature limits as the discontinued SN74LVC573APWG4, differing only in product status and packaging format (Tube).

74LVC573APW,118 (Nexperia USA Inc.) qualifies as a substitute with enhanced performance characteristics: extended lower supply voltage limit (1.2V vs. 1.65V), faster propagation delay (1.5ns vs. 2ns), and wider operating temperature range (-40°C ~ 125°C vs. -40°C ~ 85°C). This part is suitable for applications requiring improved thermal performance or lower voltage operation.

MC74LCX573DTG and MC74LCX573DTR2G (onsemi) are functionally equivalent alternatives from the 74LCX series. Both parts deliver faster propagation delay (1.5ns), extended operating temperature range (-55°C ~ 125°C), and wider temperature performance. The minimum supply voltage is 2V, which is compatible with the original part's 1.65V ~ 3.6V range for applications operating above 2V. MC74LCX573DTR2G is packaged in Tape & Reel format, while MC74LCX573DTG is supplied in Tube format.

All substitute parts maintain ROHS3 compliance, MSL-1 rating, and identical 20-TSSOP package dimensions, ensuring mechanical and environmental compatibility.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC573APW directly replace SN74LVC573APWG4?

A: Yes. SN74LVC573APW is functionally equivalent with identical electrical specifications, package type, and pin configuration. The primary difference is product status (active vs. discontinued) and packaging format (Tube).

Q: What are the key differences between 74LVC and 74LCX series substitutes?

A: Both series maintain the same logic function and package type. The 74LCX series (MC74LCX573DTG, MC74LCX573DTR2G) offers faster propagation delay (1.5ns vs. 2ns) and extended operating temperature range (-55°C ~ 125°C vs. -40°C ~ 85°C). The minimum supply voltage for 74LCX is 2V compared to 1.65V for 74LVC, which is compatible for applications operating above 2V.

Q: Are all substitute parts available in the same package?

A: All substitute parts use the 20-TSSOP package with identical dimensions (0.173", 4.40mm Width). Packaging formats differ: SN74LVC573APW and MC74LCX573DTG are supplied in Tube; 74LVC573APW,118 is available in Cut Tape (CT) & Digi-Reel®; MC74LCX573DTR2G is supplied in Tape & Reel (TR).

Q: Do all substitutes meet the same compliance requirements?

A: Yes. All substitute parts are ROHS3 compliant with MSL-1 (Unlimited) moisture sensitivity level, matching the original part's environmental and regulatory certifications.

Q: Which substitute offers the best performance improvement?

A: 74LVC573APW,118 (Nexperia) and both onsemi 74LCX variants provide faster propagation delay (1.5ns vs. 2ns). The onsemi parts additionally offer extended operating temperature range (-55°C ~ 125°C). Selection depends on application requirements for voltage range, temperature performance, and packaging format.