74AC373MTC D-Type Transparent Latch Equivalent & Substitute Parts

Part Overview

The 74AC373MTC is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring an 8:8 circuit configuration with tri-state output capability. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The 74AC373 series maintains consistent functional specifications across multiple manufacturers and packaging options, enabling direct substitution based on electrical and mechanical parameter alignment.

Substiute Parts

74AC373MTC

onsemiIn Stock: 93274AC373MTC Datasheet

Current PartRFQ

MC74AC373DTR2G

onsemiIn Stock: 4031MC74AC373DTR2G Datasheet

DirectRFQ

SN74AC373PW

Texas InstrumentsIn Stock: 994SN74AC373PW Datasheet

DirectRFQ

SN74AC373PWR

Texas InstrumentsIn Stock: 50222SN74AC373PWR Datasheet

DirectRFQ

SN74AC373DBR

Texas InstrumentsIn Stock: 953SN74AC373DBR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74AC373MTC is determined by strict adherence to the following parameters:

Primary Substitution Criteria:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Voltage Supply Range: 2V ~ 6V
• Operating Temperature Range: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Moisture Sensitivity Level: 1 (Unlimited)

Package Compatibility: Substitutes are classified into two groups based on package specifications:

• Direct Package Match (20-TSSOP): MC74AC373DTR2G, SN74AC373PW, SN74AC373PWR
• Similar Package (20-SSOP): SN74AC373DBR (0.209" width vs. 0.173" width)

All substitute parts maintain identical electrical specifications within acceptable propagation delay tolerances (7ns to 7.5ns) and output current ratings.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Direct Replacement: SN74AC373PWR (Texas Instruments) is the preferred substitute for 74AC373MTC. This part maintains active product status, offers the highest inventory availability (50200 Pcs), achieves ROHS3 compliance, and provides identical electrical and mechanical specifications with 20-TSSOP packaging.

Secondary Recommendation - onsemi Source: MC74AC373DTR2G (onsemi) serves as an active equivalent from the original manufacturer, maintaining identical package specifications and electrical performance. This option is suitable for designs requiring onsemi component sourcing.

Alternative with Package Consideration: SN74AC373DBR (Texas Instruments) provides functional equivalence with 20-SSOP packaging (0.209" width). This part is applicable only when PCB layout accommodates the wider package footprint.

Avoid: SN74AC373PW is discontinued at DiGi Electronics and should not be selected for new designs despite active status at other distributors.

Frequently Asked Questions (FAQ)

Q: Can SN74AC373PWR directly replace 74AC373MTC without PCB modification? A: Yes. Both parts use identical 20-TSSOP packaging (0.173", 4.40mm width) with matching pin configurations, electrical specifications, and operating parameters. No PCB layout changes are required.

Q: What is the difference between 20-TSSOP and 20-SSOP packages? A: The 20-SSOP package (SN74AC373DBR) is 0.209" wide compared to the 20-TSSOP package at 0.173" wide. PCB footprints are not interchangeable. Verify PCB layout compatibility before selecting SN74AC373DBR.

Q: Are all substitute parts RoHS compliant? A: MC74AC373DTR2G, SN74AC373PW, SN74AC373PWR, and SN74AC373DBR are all ROHS3 compliant. The original 74AC373MTC does not specify RoHS status.

Q: What is the propagation delay difference between 74AC373MTC and substitutes? A: The original part specifies 7ns propagation delay, while all active substitutes specify 7.5ns. This 0.5ns difference remains within acceptable timing margins for standard logic applications.

Q: Which substitute offers the best supply availability? A: SN74AC373PWR provides the highest inventory level at 50200 Pcs, ensuring reliable long-term supply for production requirements.

Q: Can I use MC74AC373DTR2G if I prefer onsemi components? A: Yes. MC74AC373DTR2G is an active onsemi product with identical electrical and mechanical specifications to 74AC373MTC, offering a direct manufacturer equivalent.