74LVT574WM Equivalent & Substitute Parts

Part Overview

The 74LVT574WM is a D-type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 8-bit parallel data storage capability. This device operates as a positive edge-triggered flip-flop with tri-state, non-inverted outputs, designed for low-voltage CMOS applications. The part is currently classified as obsolete, making equivalent and substitute components necessary for ongoing system support and new design implementations. Substitute parts maintain functional equivalence while offering improved availability and active product status.

Substiute Parts

74LVT574WM

onsemiIn Stock: 102374LVT574WM Datasheet

Current PartRFQ

SN74LVTH574DW

Texas InstrumentsIn Stock: 1254SN74LVTH574DW Datasheet

SimilarRFQ

SN74LVTH574DWR

Texas InstrumentsIn Stock: 91736SN74LVTH574DWR Datasheet

SimilarRFQ

SN74LVT574DW

Texas InstrumentsIn Stock: 2277SN74LVT574DW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74LVT574WM are classified based on strict electrical and mechanical parameter alignment:

Direct Substitutes (SN74LVTH574DW, SN74LVTH574DWR): These Texas Instruments components maintain identical functional specifications including 8-bit D-type flip-flop architecture, positive edge triggering, tri-state non-inverted outputs, 150 MHz clock frequency, 2.7V–3.6V supply voltage range, and 20-SOIC package configuration. Both parts are active products with ROHS3 compliance. The primary distinction is packaging format: SN74LVTH574DW is supplied in tube packaging, while SN74LVTH574DWR is supplied in tape and reel format. Electrical performance is superior with 4.5ns maximum propagation delay and 3pF input capacitance.

Parametric Equivalent (SN74LVT574DW): This Texas Instruments part shares the same 74LVT series base designation as the main part, maintaining identical functional architecture, supply voltage range, output current ratings, and package configuration. The part is active and ROHS3 compliant. Propagation delay is 5.9ns at 3.3V with 50pF load, representing a measurable but acceptable performance variance within the 74LVT logic family specifications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: SN74LVTH574DW and SN74LVTH574DWR are preferred substitutes. Both are active products with superior propagation delay performance (4.5ns versus 4.6ns) and lower input capacitance (3pF versus 4pF). Selection between these two depends on procurement requirements: SN74LVTH574DW for tube packaging or SN74LVTH574DWR for tape and reel format. Both maintain full ROHS3 compliance and identical electrical specifications.

For Series-Matched Substitution: SN74LVT574DW maintains the same 74LVT series designation as the original part, providing functional equivalence with acceptable propagation delay variance (5.9ns at 3.3V, 50pF load). This part is suitable for applications where series consistency is a design requirement. The part is active and ROHS3 compliant.

All substitute parts are active products with established supply chains, addressing the obsolescence status of the 74LVT574WM while maintaining functional and electrical compatibility within specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can SN74LVTH574DW directly replace 74LVT574WM in existing designs?

A: Yes. Both parts share identical functional architecture (8-bit D-type flip-flop, positive edge trigger, tri-state non-inverted outputs), electrical specifications (150 MHz clock frequency, 2.7V–3.6V supply voltage, 32mA/64mA output current), and 20-SOIC package configuration. The SN74LVTH574DW offers improved performance with 4.5ns propagation delay and 3pF input capacitance.

Q: What is the difference between SN74LVTH574DW and SN74LVTH574DWR?

A: Both parts are electrically identical. The difference is packaging format: SN74LVTH574DW is supplied in tube packaging, while SN74LVTH574DWR is supplied in tape and reel format. Selection depends on assembly and procurement requirements.

Q: Why is SN74LVT574DW listed as a parametric equivalent rather than a direct substitute?

A: SN74LVT574DW maintains the same 74LVT series designation and shares core functional specifications with the 74LVT574WM. However, propagation delay is 5.9ns at 3.3V with 50pF load, compared to 4.6ns for the original part. This represents acceptable variance within the 74LVT logic family but is measurably different from the direct substitutes.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The 74LVT574WM and all listed substitute parts (SN74LVTH574DW, SN74LVTH574DWR, SN74LVT574DW) are ROHS3 compliant with moisture sensitivity level 1 (unlimited).

Q: What is the operating temperature range for these parts?

A: All parts operate across -40°C to 85°C (TA), maintaining consistent thermal specifications across the main part and all substitutes.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes. All parts use identical 20-SOIC (0.295", 7.50mm width) surface mount packaging with the same pinout configuration, allowing direct PCB footprint compatibility.