SN74LVTH574PWRG4 Equivalent & Substitute Parts

Part Overview

The SN74LVTH574PWRG4 is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, featuring 1 element with 8-bit positive edge triggering in a 20-TSSOP surface mount package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity.

Substiute Parts

SN74LVTH574PWRG4

Texas InstrumentsIn Stock: 1036SN74LVTH574PWRG4 Datasheet

Current PartRFQ

SN74LVTH374PWR

Texas InstrumentsIn Stock: 3201SN74LVTH374PWR Datasheet

Parametric EquivalentRFQ

SN74LVTH574PWR

Texas InstrumentsIn Stock: 5447SN74LVTH574PWR Datasheet

Parametric EquivalentRFQ

74LVTH574MTCX

onsemiIn Stock: 421274LVTH574MTCX Datasheet

DirectRFQ

74LVT574MTCX

onsemiIn Stock: 214174LVT574MTCX Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LVTH574PWRG4 is determined by strict equivalence across the following critical parameters:

• Logic Function: D-Type flip-flop with 1 element, 8-bit configuration
• Trigger Mechanism: Positive edge triggering
• Output Configuration: Tri-state, non-inverted outputs
• Electrical Performance: Clock frequency of 150 MHz, propagation delay of 4.5–4.6 ns at 3.3V with 50pF load
• Supply Voltage: 2.7V to 3.6V operating range
• Package: 20-TSSOP surface mount form factor
• Compliance: ROHS3 compliant, MSL Level 1

Substitute parts are grouped into three categories based on manufacturer and product status:

1. Parametric Equivalents (Texas Instruments): SN74LVTH374PWR and SN74LVTH574PWR maintain identical electrical specifications and active product status.
2. Direct Manufacturer Equivalent (onsemi): 74LVTH574MTCX provides functional equivalence with minor propagation delay variance (4.6 ns vs. 4.5 ns).
3. Manufacturer Recommended Alternative (onsemi): 74LVT574MTCX operates within the same electrical envelope with equivalent performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Texas Instruments)

SN74LVTH574PWR is the direct functional equivalent with active product status and identical electrical specifications. This part maintains full compatibility with the original SN74LVTH574PWRG4 across all critical parameters and is recommended as the primary replacement for new designs and production continuity.

SN74LVTH374PWR provides parametric equivalence with active product status. While functionally equivalent, this part carries a different base product number (74LVTH374 vs. 74LVTH574) and should be selected only when SN74LVTH574PWR is unavailable.

Secondary Substitutes (onsemi)

74LVTH574MTCX and 74LVT574MTCX are onsemi-manufactured alternatives with equivalent electrical performance. Both parts operate within the specified parameter envelope with propagation delay of 4.6 ns (0.1 ns variance from the original specification). Both parts carry Last Time Buy status, indicating limited future availability.

Compliance and Certification

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage requirements. No additional qualification or testing is required based on regulatory compliance alone.

Frequently Asked Questions (FAQ)

Q: Can SN74LVTH374PWR be used as a direct replacement for SN74LVTH574PWRG4?

A: SN74LVTH374PWR is a parametric equivalent with identical electrical specifications, supply voltage range, clock frequency, propagation delay, and package type. The primary difference is the base product number (374 vs. 574). Functional compatibility depends on circuit design requirements; consult application schematics to confirm pin-level compatibility.

Q: What is the difference between the Texas Instruments and onsemi substitutes?

A: Texas Instruments substitutes (SN74LVTH374PWR and SN74LVTH574PWR) maintain active product status with 4.5 ns propagation delay. onsemi substitutes (74LVTH574MTCX and 74LVT574MTCX) carry Last Time Buy status with 4.6 ns propagation delay. All parts meet the same supply voltage, clock frequency, and package requirements.

Q: Are there any differences in input capacitance between the main part and substitutes?

A: The original SN74LVTH574PWRG4 specifies 3 pF input capacitance. onsemi substitutes (74LVTH574MTCX and 74LVT574MTCX) specify 4 pF input capacitance. This 1 pF variance is within typical manufacturing tolerance and does not affect functional compatibility in standard applications.

Q: What packaging options are available for these substitutes?

A: All substitute parts are supplied in 20-TSSOP surface mount packages with identical physical dimensions (0.173", 4.40mm width). Texas Instruments parts are available in Tape & Reel (TR) packaging. onsemi parts are available in Cut Tape (CT) & Digi-Reel® packaging. Package format selection depends on procurement and assembly requirements.

Q: Should I be concerned about the Last Time Buy status of onsemi parts?

A: Last Time Buy status indicates limited future availability. For long-term production requirements, Texas Instruments substitutes (SN74LVTH374PWR or SN74LVTH574PWR) with active product status are recommended to ensure sustained supply chain access.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL Level 1 rating, meeting standard environmental and regulatory requirements for commercial and industrial applications.