SN74LVTH573IPWREP Equivalent & Substitute Parts

Part Overview

The SN74LVTH573IPWREP is a D-Type Transparent Latch logic IC manufactured by Texas Instruments, featuring an 8:8 circuit configuration with tri-state output capability. This component operates within a 2.7V to 3.6V supply voltage range and is housed in a 20-TSSOP surface mount package. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when alternative packaging formats are required for specific manufacturing processes while maintaining functional and electrical equivalence.

Substiute Parts

SN74LVTH573IPWREP

Texas InstrumentsIn Stock: 870SN74LVTH573IPWREP Datasheet

Current PartRFQ

SN74LVTH373PWR

Texas InstrumentsIn Stock: 2674SN74LVTH373PWR Datasheet

Parametric EquivalentRFQ

SN74LVTH573PWR

Texas InstrumentsIn Stock: 2322SN74LVTH573PWR Datasheet

Parametric EquivalentRFQ

74LVT573DB,118

Nexperia USA Inc.In Stock: 87874LVT573DB,118 Datasheet

MFR RecommendedRFQ

74LVT573MTCX

Fairchild SemiconductorIn Stock: 4652674LVT573MTCX Datasheet

MFR RecommendedRFQ

74LVT573PW,118

Nexperia USA Inc.In Stock: 788274LVT573PW,118 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74LVTH573IPWREP is determined by strict adherence to the following parameters:

Critical Parameters for Substitution:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Supply Voltage Range: 2.7V ~ 3.6V
• Independent Circuits: 1
• Output Current Ratings: 32mA (High) / 64mA (Low)
• Operating Temperature Range: -40°C ~ 85°C
• Mounting Type: Surface Mount

Allowable Variations:

• Propagation Delay: Within ±1.5ns tolerance
• Package Case: 20-TSSOP or 20-SSOP (both 20-pin configurations)
• Packaging Format: Tape & Reel, Cut Tape, Digi-Reel, or Bulk
• Manufacturer: Texas Instruments, Nexperia USA Inc., or Fairchild Semiconductor
• Product Status: Active or Obsolete (with inventory availability)

Parameter Comparison

Engineering Selection Recommendations

Tier 1 - Direct Equivalents (Recommended Primary Substitutes):

SN74LVTH373PWR and SN74LVTH573PWR are both manufactured by Texas Instruments within the 74LVTH series. These parts maintain identical electrical specifications, supply voltage ranges, output current ratings, and operating temperature parameters. SN74LVTH373PWR offers marginally improved propagation delay (2.7ns vs. 2.9ns) with higher inventory availability (2640 units). SN74LVTH573PWR maintains identical propagation delay characteristics and is available in alternative packaging formats (Cut Tape & Digi-Reel).

Tier 2 - Cross-Manufacturer Equivalents:

74LVT573PW,118 (Nexperia USA Inc.) provides functional equivalence with identical propagation delay (2.7ns) and maintains the 20-TSSOP package configuration. This part is in active production status with substantial inventory (7867 units) and full ROHS3 compliance.

Tier 3 - Package Variant:

74LVT573DB,118 (Nexperia USA Inc.) is functionally equivalent but uses a 20-SSOP package (5.30mm width) instead of the standard 20-TSSOP (4.40mm width). This part is classified as obsolete with limited inventory (778 units). Selection of this variant requires PCB layout compatibility verification due to package dimensional differences.

Tier 4 - Extended Delay Tolerance:

74LVT573MTCX (Fairchild Semiconductor) exhibits a propagation delay of 4.4ns, which exceeds the standard tolerance window. This part is available in bulk packaging format with the highest inventory level (46504 units). Selection requires application-level timing analysis to confirm acceptable performance margins.

Frequently Asked Questions (FAQ)

Q: Can SN74LVTH373PWR be used as a direct replacement for SN74LVTH573IPWREP?

A: Yes. Both parts are D-Type Transparent Latch ICs with 8:8 circuit configuration, tri-state output, identical supply voltage range (2.7V ~ 3.6V), output current ratings (32mA/64mA), and operating temperature range (-40°C ~ 85°C). The SN74LVTH373PWR operates with a 2.7ns propagation delay compared to 2.9ns for the original part, representing improved performance within acceptable tolerance margins.

Q: What is the significance of the package case difference between 20-TSSOP and 20-SSOP?

A: Both are 20-pin surface mount packages with identical pin counts and electrical functionality. The 20-TSSOP measures 4.40mm in width, while the 20-SSOP measures 5.30mm in width. PCB footprint compatibility must be verified before selecting the 20-SSOP variant (74LVT573DB,118), as the increased package width may conflict with existing board layouts.

Q: Why does 74LVT573MTCX have a significantly higher propagation delay (4.4ns)?

A: The 74LVT573MTCX is manufactured by Fairchild Semiconductor using the 74LVT series process technology, which exhibits different timing characteristics compared to the 74LVTH series. The 4.4ns delay exceeds standard tolerance windows. This part is suitable only for applications where timing margins permit the extended delay.

Q: Are all substitute parts ROHS3 compliant?

A: SN74LVTH373PWR, SN74LVTH573PWR, 74LVT573DB,118, and 74LVT573PW,118 are all ROHS3 compliant. The 74LVT573MTCX specification does not include explicit ROHS3 compliance documentation in the provided data.

Q: Which substitute offers the best inventory availability?

A: 74LVT573MTCX provides the highest inventory level at 46504 units. However, this part exhibits extended propagation delay (4.4ns) and bulk packaging format. For active production status with standard timing characteristics, 74LVT573PW,118 offers substantial availability (7867 units) with full electrical equivalence.

Q: Can obsolete parts like 74LVT573DB,118 be used in new designs?

A: Obsolete parts carry supply risk and are not recommended for new production designs. The 74LVT573DB,118 is suitable only for legacy system maintenance or repair applications where existing inventory is available and future replenishment is not required.