SN74F573DW Equivalent & Substitute Parts

Part Overview

The SN74F573DW is a D-Type Transparent Latch logic IC manufactured by Texas Instruments, featuring a single channel 8:8 configuration with tri-state output capability in a 20-SOIC surface mount package. This component is classified as Last Time Buy, indicating limited future availability. Identifying equivalent and substitute parts is essential for design continuity, long-term supply chain planning, and production scheduling.

Substiute Parts

SN74F573DW

Texas InstrumentsIn Stock: 2234SN74F573DW Datasheet

Current PartRFQ

SN74F573DWR

Texas InstrumentsIn Stock: 2576SN74F573DWR Datasheet

MFR RecommendedRFQ

SN74F373DW

Texas InstrumentsIn Stock: 2464SN74F373DW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74F573DW is determined by strict equivalence across the following critical parameters:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Voltage Supply Range: 4.5V ~ 5.5V
• Propagation Delay Time: 8.6ns
• Output Current Specifications: 3mA (High) / 24mA (Low)
• Operating Temperature Range: 0°C ~ 70°C
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount

All identified substitute parts maintain identical electrical and mechanical specifications. Packaging format (Tube vs. Tape & Reel) and product status variations do not affect functional interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

SN74F573DWR is the manufacturer-recommended substitute, offering identical electrical and mechanical specifications with Active product status, ensuring continued availability and supply chain stability compared to the Last Time Buy status of the main part.

SN74F373DW is a parametric equivalent providing full functional interchangeability. Selection between SN74F573DWR and SN74F373DW should be based on packaging requirements (Tape & Reel vs. Tube) and inventory planning considerations, as both maintain equivalent performance characteristics and compliance certifications.

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can SN74F573DWR be used as a direct replacement for SN74F573DW?

A: Yes. Both parts are electrically and mechanically identical. The primary difference is packaging format: SN74F573DWR is supplied in Tape & Reel format while SN74F573DW is supplied in Tube format. SN74F573DWR also maintains Active product status, providing superior long-term availability.

Q: What is the difference between SN74F573DW and SN74F373DW?

A: Both parts are parametric equivalents with identical electrical specifications, logic type, circuit configuration, output characteristics, and package dimensions. The base product numbers differ (74F573 vs. 74F373), but functional performance in circuit applications is equivalent. Both are classified as Last Time Buy.

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist when substituting between these parts. All three components share identical voltage supply ranges, propagation delay times, output current specifications, operating temperature ranges, and 20-SOIC package dimensions. Pin configuration and functional behavior are equivalent.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (Tube vs. Tape & Reel) is a logistics and handling consideration only. Electrical and mechanical performance remains identical regardless of packaging format.

Q: Which substitute should be selected for new designs?

A: SN74F573DWR is recommended for new designs due to its Active product status, ensuring long-term availability and supply continuity. Both SN74F573DWR and SN74F373DW are functionally equivalent and suitable for production use.