74ACT373MTC Equivalent & Substitute Parts

Part Overview

The 74ACT373MTC 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, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates within a 4.5V to 5.5V supply voltage range and is housed in a 20-TSSOP surface mount package.

Substiute Parts

74ACT373MTC

onsemiIn Stock: 79274ACT373MTC Datasheet

Current PartRFQ

MC74ACT373DTR2G

onsemiIn Stock: 3516MC74ACT373DTR2G Datasheet

DirectRFQ

SN74ACT373PW

Texas InstrumentsIn Stock: 1562SN74ACT373PW Datasheet

DirectRFQ

SN74ACT373PWR

Texas InstrumentsIn Stock: 3359SN74ACT373PWR Datasheet

DirectRFQ

SN74ACT373DBR

Texas InstrumentsIn Stock: 3121SN74ACT373DBR Datasheet

SimilarRFQ

SN74ACT563PW

Texas InstrumentsIn Stock: 1817SN74ACT563PW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACT373MTC is determined by the following critical parameters:

Primary Substitution Criteria:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Voltage - Supply: 4.5V ~ 5.5V
• Independent Circuits: 1
• Operating Temperature Range: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP or compatible package

Substitution Categories:

Direct Substitutes maintain identical electrical and mechanical specifications with the same 20-TSSOP package footprint. These parts are pin-compatible and functionally equivalent.

Similar Substitutes share identical electrical specifications but utilize a different package variant (20-SSOP instead of 20-TSSOP). These require PCB layout verification for mechanical compatibility.

Parametric Equivalents maintain core functional characteristics but feature improved propagation delay performance. These parts are functionally compatible but operate with enhanced speed specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: MC74ACT373DTR2G

MC74ACT373DTR2G is the preferred direct substitute for 74ACT373MTC. This onsemi part maintains identical electrical specifications and 20-TSSOP package compatibility. The component is currently in active production status with ROHS3 compliance certification, ensuring long-term availability and regulatory alignment.

Secondary Recommendation: SN74ACT373PWR

SN74ACT373PWR, manufactured by Texas Instruments, provides direct electrical and mechanical equivalence with active product status. This part is supplied in Tape & Reel packaging and carries ROHS3 compliance. The propagation delay specification of 8.5ns remains within acceptable tolerance for most applications requiring the 74ACT373 function.

Alternative for Package Flexibility: SN74ACT373DBR

SN74ACT373DBR offers identical electrical performance but utilizes a 20-SSOP package (0.209", 5.30mm width) instead of the 20-TSSOP footprint. This part is suitable only for designs where PCB layout accommodates the larger package dimensions. Active product status and ROHS3 compliance are confirmed.

Performance-Enhanced Option: SN74ACT563PW

SN74ACT563PW provides improved propagation delay performance at 6.5ns compared to the 8ns specification of the original part. This parametric equivalent maintains all other electrical and mechanical requirements. The part is designated as Last Time Buy, indicating limited future availability.

Frequently Asked Questions (FAQ)

Q: Can MC74ACT373DTR2G be used as a direct replacement for 74ACT373MTC?

A: Yes. MC74ACT373DTR2G is a direct substitute. Both parts share identical logic type (D-Type Transparent Latch), circuit configuration (8:8), output type (tri-state), supply voltage range (4.5V ~ 5.5V), operating temperature range (-40°C ~ 85°C), and package specification (20-TSSOP). Pin-to-pin compatibility is confirmed.

Q: What is the difference between SN74ACT373PW and SN74ACT373PWR?

A: Both parts are functionally identical Texas Instruments 74ACT373 variants with matching electrical specifications. The primary difference is packaging: SN74ACT373PW is supplied in Tube packaging, while SN74ACT373PWR is supplied in Tape & Reel (TR) format. Selection depends on procurement and assembly requirements.

Q: Why is SN74ACT373DBR listed as a similar substitute rather than a direct substitute?

A: SN74ACT373DBR utilizes a 20-SSOP package (0.209", 5.30mm width) instead of the 20-TSSOP package (0.173", 4.40mm width) specified for 74ACT373MTC. While electrically equivalent, the larger package footprint requires PCB layout verification to confirm mechanical compatibility with existing designs.

Q: Is SN74ACT563PW compatible with designs requiring 74ACT373MTC?

A: SN74ACT563PW is functionally compatible but represents a different base product number (74ACT563 versus 74ACT373). While both are D-Type Transparent Latch ICs with 8:8 configuration and tri-state output, the 74ACT563 is a distinct logic function. Compatibility depends on circuit-specific requirements. The improved propagation delay (6.5ns versus 8ns) is beneficial for timing-critical applications.

Q: What does "Last Time Buy" status mean for SN74ACT563PW?

A: Last Time Buy designation indicates the manufacturer has announced end-of-life for this part. Existing inventory may be available, but future production is not planned. This part should be selected only when performance advantages justify potential supply constraints.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts carry ROHS3 compliance certification. The original 74ACT373MTC does not specify RoHS status. All active and discontinued substitute options meet current environmental and regulatory requirements.

Q: What is the significance of Moisture Sensitivity Level (MSL) 1?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All parts listed, including the original 74ACT373MTC and all substitutes, share this MSL classification.