SN74LVC373AQDWREP Equivalent & Substitute Parts

Part Overview

The SN74LVC373AQDWREP is a D-Type Transparent Latch logic IC manufactured by Texas Instruments, featuring an 8:8 channel configuration with tri-state output capability. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and production continuity. The part operates across a supply voltage range of 1.65V to 3.6V with a propagation delay of 1.5ns and is housed in a 20-SOIC surface mount package.

Substiute Parts

SN74LVC373AQDWREP

Texas InstrumentsIn Stock: 1030SN74LVC373AQDWREP Datasheet

Current PartRFQ

SN74LVC373ADWR

Texas InstrumentsIn Stock: 3374SN74LVC373ADWR Datasheet

MFR RecommendedRFQ

SN74LVC573AQDWRQ1

Texas InstrumentsIn Stock: 1300SN74LVC573AQDWRQ1 Datasheet

MFR RecommendedRFQ

74LVC373AD,118

NXP SemiconductorsIn Stock: 506174LVC373AD,118 Datasheet

MFR RecommendedRFQ

MC74LCX373DWR2G

onsemiIn Stock: 1325MC74LCX373DWR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74LVC373AQDWREP is determined by the following critical parameters:

Primary Compatibility Criteria:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Package / Case: 20-SOIC
• Mounting Type: Surface Mount
• Supply Voltage Range: Minimum 1.65V support required
• RoHS Compliance: ROHS3 Compliant

Secondary Compatibility Criteria:

• Propagation Delay: 1.5ns or faster
• Output Current: 24mA minimum for both high and low states
• Operating Temperature Range: Support for -40°C minimum

The substitute parts identified maintain functional equivalence through matching logic architecture, circuit topology, and physical packaging. Variations in supply voltage upper limits, operating temperature maximums, and propagation delays represent acceptable trade-offs when the substitute meets or exceeds the primary criteria.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SN74LVC373ADWR

The SN74LVC373ADWR is the manufacturer-recommended direct substitute from Texas Instruments. This part maintains identical electrical specifications including supply voltage range, propagation delay, and output current ratings. The primary distinction is packaging format (Cut Tape & Digi-Reel versus Tape & Reel) and operating temperature maximum of 85°C versus 125°C. For applications operating within -40°C to 85°C, this part provides full functional equivalence with active product status and ROHS3 compliance.

Secondary Substitute: SN74LVC573AQDWRQ1

The SN74LVC573AQDWRQ1 offers enhanced specifications including faster propagation delay (1ns versus 1.5ns) and extended operating temperature range (-40°C to 125°C). This part carries automotive-grade qualification (AEC-Q100) and is actively manufactured by Texas Instruments. The supply voltage minimum is 2V rather than 1.65V, which may restrict use in ultra-low-voltage applications. This substitute is suitable for automotive and high-reliability applications requiring extended temperature operation.

Tertiary Substitute: MC74LCX373DWR2G

The MC74LCX373DWR2G from onsemi provides functional equivalence with matching electrical performance and 20-SOIC packaging. Operating temperature range is limited to -40°C to 85°C. Moisture sensitivity level is elevated to MSL 3 (168 hours) compared to MSL 1 for the primary part. This substitute is appropriate for standard industrial applications where moisture sensitivity constraints are manageable.

Alternative: 74LVC373AD,118

The 74LVC373AD,118 from NXP Semiconductors is a bus driver variant with limited detailed specifications provided. This part is actively manufactured and ROHS3 compliant but lacks complete electrical parameter documentation necessary for comprehensive compatibility assessment.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC373ADWR be used as a direct replacement for SN74LVC373AQDWREP?

A: Yes. The SN74LVC373ADWR maintains identical logic type, circuit configuration, output type, supply voltage range, propagation delay, output current, and 20-SOIC packaging. The operating temperature maximum is reduced from 125°C to 85°C. For applications within this temperature range, full functional equivalence is established.

Q: What is the primary difference between SN74LVC373AQDWREP and SN74LVC573AQDWRQ1?

A: Both parts are D-Type Transparent Latches with 8:8 configuration and tri-state output in 20-SOIC packaging. The SN74LVC573AQDWRQ1 features faster propagation delay (1ns versus 1.5ns), extended operating temperature range (-40°C to 125°C), and automotive-grade qualification. The supply voltage minimum is 2V versus 1.65V for the original part.

Q: Why does MC74LCX373DWR2G have a higher moisture sensitivity level?

A: Moisture Sensitivity Level (MSL) 3 indicates the component requires controlled humidity storage conditions for 168 hours maximum before soldering. This is a manufacturing and handling specification that does not affect electrical performance or functional operation after assembly. MSL 1 components have unlimited shelf life under standard conditions.

Q: Are all substitute parts available in the same packaging format?

A: All identified substitutes are housed in 20-SOIC surface mount packages with identical physical dimensions (0.295", 7.50mm width). Packaging format variations (Cut Tape & Digi-Reel, Tape & Reel, Bulk) affect supply and handling but not electrical or mechanical compatibility.

Q: Which substitute is recommended for automotive applications?

A: The SN74LVC573AQDWRQ1 carries AEC-Q100 automotive qualification and is specifically designed for automotive-grade requirements. This part is the appropriate selection for automotive system designs.

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

A: Yes. All substitute parts share identical 20-SOIC pinout and electrical interface specifications. PCB designs require no modification for component substitution. Pin-level compatibility is maintained across all identified alternatives.