74LVTH574WM Equivalent & Substitute Parts

Part Overview

The 74LVTH574WM is a D-type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 8-bit positive edge triggering in a 20-SOIC surface mount package. This component is classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and ongoing production requirements. The 74LVTH574 series provides standard D-type flip-flop functionality with tri-state, non-inverted outputs suitable for digital logic applications requiring edge-triggered data capture and storage.

Substiute Parts

74LVTH574WM

onsemiIn Stock: 107074LVTH574WM Datasheet

Current PartRFQ

SN74LVTH574DW

Texas InstrumentsIn Stock: 1254SN74LVTH574DW Datasheet

DirectRFQ

SN74LVTH574DWR

Texas InstrumentsIn Stock: 91736SN74LVTH574DWR Datasheet

DirectRFQ

SN74LVT574DW

Texas InstrumentsIn Stock: 2277SN74LVT574DW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74LVTH574WM is determined by the following critical parameters:

Core Functional Requirements:

• D-Type flip-flop architecture with 1 element, 8-bit configuration
• Positive edge trigger mechanism
• Tri-state, non-inverted output configuration
• 150 MHz clock frequency capability
• 20-SOIC surface mount package (0.295", 7.50mm Width)

Electrical Compatibility:

• Supply voltage range: 2.7V ~ 3.6V
• Operating temperature: -40°C ~ 85°C
• Output drive capability: 32mA (high), 64mA (low)
• Quiescent current: 190 µA

Substitution Categories:

Direct Manufacturer Equivalents (Texas Instruments 74LVTH series): SN74LVTH574DW and SN74LVTH574DWR maintain identical functional specifications, electrical parameters, and package geometry. These parts are active products with enhanced propagation delay performance (4.5ns vs. 4.6ns) and reduced input capacitance (3pF vs. 4pF), representing direct pin-compatible replacements.

Parametric Equivalent (Texas Instruments 74LVT series): SN74LVT574DW operates within the same electrical envelope and package specification but belongs to the 74LVT logic family. This part exhibits slightly degraded propagation delay (5.9ns vs. 4.6ns) while maintaining all other critical parameters, making it functionally compatible for applications where timing margins permit.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents):

SN74LVTH574DW and SN74LVTH574DWR are the preferred substitutes for the obsolete 74LVTH574WM. Both parts are manufactured by Texas Instruments, maintain active product status, and provide identical functional and electrical specifications. The SN74LVTH574DW is supplied in tube packaging, while the SN74LVTH574DWR is supplied in tape and reel format. Both achieve superior propagation delay performance (4.5ns) compared to the original part and comply with ROHS3 standards. Selection between these two should be based on procurement and assembly requirements.

Secondary Substitute (Parametric Equivalent):

SN74LVT574DW serves as a parametric equivalent for applications where propagation delay tolerance permits. This part maintains all critical electrical and functional parameters but exhibits increased propagation delay (5.9ns vs. 4.5ns). The 74LVT series is suitable for designs with relaxed timing constraints or where cost considerations justify the performance trade-off. This part is also ROHS3 compliant and maintains active product status.

Compliance Considerations:

All substitute parts comply with REACH regulations and carry ROHS3 certification, supporting modern manufacturing and environmental compliance requirements. The MSL rating of 1 (Unlimited) across all parts indicates no moisture sensitivity constraints during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can SN74LVTH574DW directly replace the 74LVTH574WM without circuit modifications?

A: Yes. SN74LVTH574DW is a direct pin-compatible equivalent with identical package geometry (20-SOIC), functional architecture, and electrical specifications. No circuit modifications are required for substitution.

Q: What is the difference between SN74LVTH574DW and SN74LVTH574DWR?

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

Q: Is SN74LVT574DW suitable as a substitute?

A: SN74LVT574DW is functionally compatible and maintains the same package, supply voltage, and output drive specifications. However, it exhibits increased propagation delay (5.9ns vs. 4.5ns). This part is suitable only for applications where timing margins accommodate the additional delay. Verify circuit timing requirements before selection.

Q: Are all substitute parts RoHS compliant?

A: Yes. All Texas Instruments substitutes (SN74LVTH574DW, SN74LVTH574DWR, and SN74LVT574DW) are ROHS3 compliant. The original onsemi part does not specify RoHS status.

Q: What is the moisture sensitivity level for these parts?

A: All parts carry MSL rating 1 (Unlimited), indicating no moisture sensitivity constraints. Standard handling and storage procedures are sufficient.

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

A: SN74LVTH574DW and SN74LVTH574DWR are fully interchangeable with the 74LVTH574WM. SN74LVT574DW requires timing analysis to confirm compatibility with circuit timing requirements due to increased propagation delay.