74ACT16374SSCX Equivalent & Substitute Parts

Part Overview

The 74ACT16374SSCX is a dual 8-bit D-type flip-flop logic integrated circuit manufactured by onsemi, housed in a 48-BSSOP surface mount package. This component functions as a standard positive edge-triggered flip-flop with tri-state, non-inverted outputs, designed for digital logic applications requiring synchronous data storage and transfer.

The 74ACT16374SSCX is currently classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

74ACT16374SSCX

onsemiIn Stock: 88874ACT16374SSCX Datasheet

Current PartRFQ

74ACT16374DLR

Texas InstrumentsIn Stock: 293274ACT16374DLR Datasheet

SimilarRFQ

SN74ACT16374QDLREP

Texas InstrumentsIn Stock: 930SN74ACT16374QDLREP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74ACT16374SSCX are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine valid substitution:

Critical Matching Parameters:

• Series: 74ACT (same logic family)
• Type: D-Type Flip-Flop (same functional architecture)
• Number of Elements: 2 (same quantity)
• Number of Bits per Element: 8 (same bit width)
• Output Type: Tri-State, Non-Inverted (same output configuration)
• Trigger Type: Positive Edge (same clock sensitivity)
• Package / Case: 48-BSSOP (0.295", 7.50mm Width) (identical physical form factor)
• Mounting Type: Surface Mount (same assembly method)
• Voltage - Supply: 4.5V ~ 5.5V (compatible supply range)

Allowable Parameter Variations:

• Clock Frequency: May vary within acceptable operational margins
• Max Propagation Delay: May vary within acceptable operational margins
• Current - Output High, Low: May vary within acceptable operational margins
• Current - Quiescent (Iq): May vary within acceptable operational margins
• Operating Temperature: May extend to higher maximum values
• Product Status: Active status preferred for ongoing availability
• Packaging Format: May differ (Cut Tape, Digi-Reel, Tape & Reel)

Parameter Comparison

Engineering Selection Recommendations

74ACT16374DLR (Texas Instruments)

This part is the primary substitute for the 74ACT16374SSCX. Both components share identical electrical specifications for supply voltage, logic family, and functional architecture. The 74ACT16374DLR is manufactured by Texas Instruments and maintains active product status, ensuring ongoing availability and supply chain support. This part is ROHS3 compliant and available in Cut Tape and Digi-Reel packaging formats, providing flexibility for production environments.

SN74ACT16374QDLREP (Texas Instruments)

This part serves as an alternative substitute with extended operating temperature range (-40°C ~ 125°C versus -40°C ~ 85°C). The SN74ACT16374QDLREP is also manufactured by Texas Instruments with active product status and ROHS3 compliance. Output current specifications are reduced (16mA versus 24mA), and propagation delay is increased (10.9ns versus 7.9ns). This part is suitable for applications requiring extended temperature operation or where reduced output current is acceptable. It is supplied in Tape & Reel packaging format.

Both substitute parts are electrically and mechanically compatible with the 74ACT16374SSCX within the specified parameter tolerances and are recommended for design transitions from the obsolete onsemi component.

Frequently Asked Questions (FAQ)

Q: Can the 74ACT16374DLR directly replace the 74ACT16374SSCX in existing designs?

A: Yes. Both parts are identical in electrical function, logic family (74ACT), package type (48-BSSOP), and supply voltage requirements (4.5V ~ 5.5V). The 74ACT16374DLR is a direct functional equivalent and requires no circuit modifications.

Q: What is the difference between 74ACT16374DLR and SN74ACT16374QDLREP?

A: The primary differences are operating temperature range and output current capacity. The SN74ACT16374QDLREP supports -40°C ~ 125°C operation (versus -40°C ~ 85°C for the DLR) and has reduced output current (16mA versus 24mA). Propagation delay is also slightly higher (10.9ns versus 8.8ns). Select the SN74ACT16374QDLREP only if extended temperature operation is required.

Q: Are there packaging differences between the substitute parts?

A: Yes. The 74ACT16374DLR is available in Cut Tape (CT) and Digi-Reel formats, while the SN74ACT16374QDLREP is supplied in Tape & Reel (TR) format. Verify packaging compatibility with your procurement and assembly processes before selection.

Q: Why is the 74ACT16374SSCX classified as obsolete?

A: The onsemi 74ACT16374SSCX has reached end-of-life status. Texas Instruments continues to manufacture functionally equivalent parts (74ACT16374DLR and SN74ACT16374QDLREP) with active product status, ensuring long-term availability for new designs and production support.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both the 74ACT16374DLR and SN74ACT16374QDLREP are ROHS3 compliant. RoHS compliance status for the original 74ACT16374SSCX was not specified in available documentation.

Q: What is the impact of different propagation delays on circuit performance?

A: The 74ACT16374SSCX has a maximum propagation delay of 7.9ns, the 74ACT16374DLR has 8.8ns, and the SN74ACT16374QDLREP has 10.9ns. These variations are within typical 74ACT logic family tolerances. Verify that your circuit timing margins accommodate the selected part's propagation delay specification.