74LVTH574WMX Equivalent & Substitute Parts

Part Overview

The 74LVTH574WMX 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 package. This component operates at 150 MHz clock frequency with tri-state, non-inverted outputs and is designed for low-voltage CMOS applications. The part is currently obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

74LVTH574WMX

onsemiIn Stock: 86074LVTH574WMX Datasheet

Current PartRFQ

SN74LVTH574DW

Texas InstrumentsIn Stock: 1254SN74LVTH574DW Datasheet

DirectRFQ

SN74LVTH574DWR

Texas InstrumentsIn Stock: 91736SN74LVTH574DWR Datasheet

DirectRFQ

SN74LVT574DW

Texas InstrumentsIn Stock: 2277SN74LVT574DW Datasheet

SimilarRFQ

SN74LVT574DWR

Texas InstrumentsIn Stock: 2214SN74LVT574DWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74LVTH574WMX is determined by the following critical parameters:

• Functional equivalence: D-type flip-flop with 1 element, 8-bit configuration, positive edge trigger
• Output characteristics: Tri-state, non-inverted outputs
• Electrical specifications: 150 MHz clock frequency, 2.7V ~ 3.6V supply voltage, -40°C ~ 85°C operating range
• Package compatibility: 20-SOIC (0.295", 7.50mm Width) surface mount package
• Pin configuration: Identical pinout required for direct substitution

Substitute parts are categorized as follows:

Direct Manufacturer Equivalents (SN74LVTH574DW, SN74LVTH574DWR): Texas Instruments parts within the 74LVTH series, maintaining identical electrical parameters and package specifications. These are active products with full compatibility.

Similar Equivalents (SN74LVT574DW, SN74LVT574DWR): Texas Instruments parts from the 74LVT series, offering parametric compatibility with minor performance variations in propagation delay and input capacitance while maintaining functional equivalence and package compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents): SN74LVTH574DW and SN74LVTH574DWR are the preferred substitutes for the obsolete 74LVTH574WMX. Both are active Texas Instruments products within the 74LVTH series, offering identical functional specifications, electrical parameters, and package compatibility. SN74LVTH574DWR in tape and reel packaging is recommended for high-volume production applications, while SN74LVTH574DW in tube packaging suits lower-volume requirements. Both parts are ROHS3 compliant and maintain REACH unaffected status.

Secondary Substitutes (Parametric Equivalents): SN74LVT574DW and SN74LVT574DWR from the 74LVT series provide functional and parametric compatibility with acceptable performance trade-offs. These parts exhibit slightly higher propagation delay (5.9ns versus 4.5ns at 3.3V, 50pF) and identical input capacitance to the original part. Selection of these alternatives is appropriate when 74LVTH series availability is constrained. SN74LVT574DWR in tape and reel format is suitable for production environments.

All substitute parts maintain identical supply voltage range, operating temperature specifications, output drive capabilities, and package dimensions, ensuring direct board-level compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can SN74LVTH574DW directly replace the 74LVTH574WMX without PCB modifications?

A: Yes. The SN74LVTH574DW maintains identical pinout, package dimensions (20-SOIC, 0.295" × 7.50mm), and electrical specifications. No PCB layout changes are required for direct substitution.

Q: What is the difference between SN74LVTH574DW and SN74LVTH574DWR?

A: Both parts are electrically identical. The primary difference is packaging format: DW is supplied in tube packaging for lower-volume applications, while DWR is supplied in tape and reel format for automated assembly and higher-volume production.

Q: Are the 74LVT series parts (SN74LVT574DW, SN74LVT574DWR) suitable replacements?

A: Yes, with performance considerations. The 74LVT series parts are functionally equivalent and maintain all critical electrical parameters. The propagation delay is slightly higher (5.9ns versus 4.5ns), which is acceptable for most applications operating below 150 MHz. Verify timing margins in your specific circuit before selection.

Q: What compliance certifications apply to the substitute parts?

A: All Texas Instruments substitutes (SN74LVTH574DW, SN74LVTH574DWR, SN74LVT574DW, SN74LVT574DWR) are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is 1 (unlimited), matching the original part.

Q: Is the 74LVTH574WMX still available from any manufacturer?

A: The 74LVTH574WMX is obsolete. Active production has ceased. Texas Instruments SN74LVTH574 variants are the current active alternatives and are recommended for new designs and ongoing procurement.

Q: Can I use these parts interchangeably in existing designs?

A: Yes. All substitute parts maintain identical functional behavior, electrical specifications, and package compatibility. No design changes are required for interchangeable use.