74ACTQ16373SSCX Equivalent & Substitute Parts

Part Overview

The 74ACTQ16373SSCX is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring dual 8:8 channel configuration with tri-state output capability. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The part operates within the 4.5V to 5.5V supply voltage range and is housed in a 48-BSSOP surface mount package.

Substiute Parts

74ACTQ16373SSCX

onsemiIn Stock: 195574ACTQ16373SSCX Datasheet

Current PartRFQ

74ACT16373DL

Texas InstrumentsIn Stock: 294074ACT16373DL Datasheet

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74ACT16373DLR

Texas InstrumentsIn Stock: 171474ACT16373DLR Datasheet

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SN74ACT16373QDLREP

Texas InstrumentsIn Stock: 712SN74ACT16373QDLREP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACTQ16373SSCX is determined by strict alignment across the following critical parameters:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8 dual channel
• Output Type: Tri-State
• Supply Voltage Range: 4.5V ~ 5.5V
• Package / Case: 48-BSSOP surface mount
• Independent Circuits: 2
• Mounting Type: Surface Mount

All identified substitute parts maintain identical functional architecture and package specifications. Variations in propagation delay time, output current ratings, and operating temperature ranges are within acceptable tolerance for direct substitution in most applications, provided circuit design parameters accommodate these differences.

Parameter Comparison

Engineering Selection Recommendations

74ACT16373DL (Texas Instruments): This part carries Last Time Buy status and maintains full electrical and mechanical compatibility with the 74ACTQ16373SSCX. It achieves ROHS3 compliance and is available in tube packaging. The propagation delay increase from 5.3ns to 9.3ns is within acceptable margins for most digital logic applications.

74ACT16373DLR (Texas Instruments): This actively produced variant offers the most reliable long-term procurement path. It maintains identical electrical specifications to 74ACT16373DL with ROHS3 compliance and is available in cut tape and digi-reel packaging formats suitable for automated assembly operations.

SN74ACT16373QDLREP (Texas Instruments): This active part extends the operating temperature range to -40°C ~ 125°C, providing enhanced thermal performance for demanding environments. Output current is reduced to 16mA per channel. This variant is appropriate for applications requiring extended temperature operation or where reduced output drive capability is acceptable.

Frequently Asked Questions (FAQ)

Q: Can 74ACT16373DL, 74ACT16373DLR, and SN74ACT16373QDLREP be used interchangeably with 74ACTQ16373SSCX?

A: Yes, all three Texas Instruments parts are functionally equivalent substitutes. They maintain identical logic type, circuit configuration, output type, supply voltage, and package specifications. Pin-for-pin compatibility is assured.

Q: What is the significance of the propagation delay difference between 74ACTQ16373SSCX (5.3ns) and the substitute parts (9.3ns)?

A: The 4ns increase in propagation delay is a timing characteristic difference. Substitution is valid provided circuit design timing margins accommodate this delay. Critical path analysis should confirm system-level timing requirements are met.

Q: Why does SN74ACT16373QDLREP have lower output current (16mA vs 24mA)?

A: The reduced output current specification reflects the part's design characteristics. Substitution is valid for applications where load impedance and fanout requirements are compatible with 16mA drive capability. Load analysis should confirm adequacy for the intended application.

Q: What packaging options are available for each substitute part?

A: 74ACT16373DL is supplied in tube packaging. 74ACT16373DLR is available in cut tape and digi-reel formats. SN74ACT16373QDLREP is supplied in tape and reel packaging. Selection depends on assembly process requirements and order quantities.

Q: Are all substitute parts RoHS compliant?

A: Yes, all three Texas Instruments substitutes are ROHS3 compliant. The original 74ACTQ16373SSCX RoHS status was not specified in available documentation.

Q: Which substitute part offers the best long-term availability?

A: 74ACT16373DLR carries active product status, indicating ongoing production and the most reliable long-term procurement availability. 74ACT16373DL is Last Time Buy, indicating limited future availability. SN74ACT16373QDLREP is also active but with extended temperature specifications.