74ACTQ16373MTDX Equivalent & Substitute Parts

Part Overview

The 74ACTQ16373MTDX is a D-Type Transparent Latch IC with 2 independent channels, 8:8 circuit configuration, and tri-state output capability. Manufactured by onsemi in a 48-TSSOP package, this component is classified as obsolete. Due to its discontinued status, identifying functionally equivalent substitute parts is essential for design continuity, production planning, and system maintenance.

Substiute Parts

74ACTQ16373MTDX

onsemiIn Stock: 108974ACTQ16373MTDX Datasheet

Current PartRFQ

74LCX16373MTDX

Fairchild SemiconductorIn Stock: 367974LCX16373MTDX Datasheet

SimilarRFQ

74ACT16373DL

Texas InstrumentsIn Stock: 294074ACT16373DL Datasheet

SimilarRFQ

74ACT16373DLR

Texas InstrumentsIn Stock: 171474ACT16373DLR Datasheet

SimilarRFQ

SN74ACT16373QDLREP

Texas InstrumentsIn Stock: 712SN74ACT16373QDLREP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74ACTQ16373MTDX are evaluated based on the following critical parameters:

Functional Equivalence Criteria:

• Logic type: D-Type Transparent Latch
• Circuit configuration: 8:8
• Independent circuits: 2
• Output type: Tri-State
• Package type: 48-pin TFSOP/SSOP form factor

Electrical Compatibility Criteria:

• Supply voltage range (must support 4.5V ~ 5.5V operation or be compatible with system voltage)
• Output current capability (minimum 24mA / 24mA)
• Propagation delay (within acceptable timing margins for the application)
• Operating temperature range (minimum -40°C ~ 85°C)

Substitutes are grouped into two categories: direct pin-compatible replacements within the same voltage family (74ACT series) and cross-family alternatives with different voltage specifications (74LCX series).

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 74ACT16373DLR

The 74ACT16373DLR is the recommended substitute for new designs and production. It maintains identical electrical specifications within the 4.5V ~ 5.5V supply range, matching output current (24mA / 24mA) and operating temperature (-40°C ~ 85°C). The part is currently active with ROHS3 compliance and available in Tape & Reel packaging for automated assembly. Package differences (48-BSSOP vs. 48-TFSOP) require PCB layout verification but do not affect electrical functionality.

Secondary Substitute: SN74ACT16373QDLREP

The SN74ACT16373QDLREP offers extended operating temperature range (-40°C ~ 125°C) and active product status. Output current is reduced to 16mA / 16mA, which may be acceptable depending on load requirements. This part is suitable for applications requiring higher temperature operation. ROHS3 compliance and Tape & Reel packaging are available.

Alternative for Low-Voltage Systems: 74LCX16373MTDX

The 74LCX16373MTDX is a cross-family substitute for systems operating at 2V ~ 3.6V supply voltage. It maintains the same package form factor (48-TFSOP) and identical circuit configuration. This part is not suitable for 5V systems and requires voltage level translation if integration with 5V logic is necessary.

Not Recommended: 74ACT16373DL

The 74ACT16373DL is classified as Last Time Buy and should not be selected for new designs. While electrically compatible, its discontinued status limits long-term availability.

Frequently Asked Questions (FAQ)

Q: Can the 74LCX16373MTDX replace the 74ACTQ16373MTDX in a 5V system?

A: No. The 74LCX16373MTDX operates at 2V ~ 3.6V supply voltage and is not compatible with 5V systems. Direct substitution would result in component failure or malfunction. Voltage level translation circuitry would be required for integration.

Q: What is the impact of package differences between 48-TFSOP and 48-BSSOP?

A: Both packages are 48-pin surface mount configurations with identical pin assignments and electrical functionality. The primary difference is physical dimensions: 48-TFSOP has a 0.240" width (6.10mm) while 48-BSSOP has a 0.295" width (7.50mm). PCB layout and footprint must be updated accordingly, but no electrical redesign is required.

Q: Are the Texas Instruments 74ACT16373 variants pin-compatible with the onsemi 74ACTQ16373MTDX?

A: Yes. All 74ACT16373 variants share identical pin assignments and electrical specifications within the 4.5V ~ 5.5V supply range. Pin compatibility is maintained across manufacturers.

Q: Does the propagation delay difference between 5.3ns and 9.3ns affect system performance?

A: Propagation delay differences must be evaluated within the context of system timing requirements. The 5.3ns specification of the original part versus 9.3ns for Texas Instruments variants represents a 4ns margin. Applications with tight timing constraints should verify that the slower propagation delay remains within acceptable system timing budgets.

Q: Which substitute is best for new production designs?

A: The 74ACT16373DLR is recommended for new production. It offers active product status, ROHS3 compliance, standard Tape & Reel packaging for automated assembly, and identical electrical specifications to the original part within the 4.5V ~ 5.5V operating range.

Q: What is the moisture sensitivity level for substitute parts?

A: The 74ACT16373DLR and SN74ACT16373QDLREP both have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.