74ACTQ16240MTD Equivalent & Substitute Parts

Part Overview

The 74ACTQ16240MTD is a Buffer, Inverting logic integrated circuit manufactured by onsemi, featuring 4 elements with 4 bits per element and 3-state output capability. This device operates across a 4.5V to 5.5V supply voltage range and is housed in a 48-TSSOP package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

74ACTQ16240MTD

onsemiIn Stock: 108674ACTQ16240MTD Datasheet

Current PartRFQ

74ACT16240DL

Texas InstrumentsIn Stock: 122274ACT16240DL Datasheet

SimilarRFQ

74ACT16240DLR

Texas InstrumentsIn Stock: 150374ACT16240DLR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACTQ16240MTD is determined by strict equivalence across the following critical parameters:

• Logic Type: Buffer, Inverting (4 elements, 4 bits per element)
• Output Type: 3-State
• Output Current Capability: 24mA high, 24mA low
• Supply Voltage Range: 4.5V ~ 5.5V
• Operating Temperature Range: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Base Product Number: 74ACT/74ACTQ series

The identified substitute parts maintain functional and electrical equivalence to the main part. Package variations (48-TSSOP vs. 48-SSOP/48-BSSOP) represent different physical form factors but preserve pin compatibility and electrical performance within the specified parameters.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the 74ACTQ16240MTD, the 74ACT16240DLR (Texas Instruments, Tape & Reel packaging) is the primary substitute. This part maintains full electrical and functional equivalence while offering the advantage of Active product status, ensuring long-term availability and supply chain stability. The 74ACT16240DLR is ROHS3 compliant and carries MSL 1 rating, meeting modern environmental and reliability standards.

The 74ACT16240DL (Texas Instruments, Tube packaging) provides an equivalent alternative with Last Time Buy status, suitable for applications where packaging format aligns with existing procurement workflows.

Package form factor differences (48-TFSOP vs. 48-BSSOP) require PCB layout verification to confirm mechanical fit within existing designs. Both package types maintain identical electrical performance and pin assignments.

Frequently Asked Questions (FAQ)

Q: Can the 74ACT16240DL and 74ACT16240DLR be used interchangeably with the 74ACTQ16240MTD?

A: Yes. Both parts maintain identical electrical specifications, logic function, output drive capability, and operating parameters. The primary differences are packaging format (Tube vs. Tape & Reel) and product lifecycle status. PCB layout must accommodate the 48-BSSOP package dimensions (0.295" width) versus the original 48-TFSOP (0.240" width).

Q: What is the significance of the product status difference between these parts?

A: The 74ACTQ16240MTD is classified as Obsolete, indicating discontinued manufacturing. The 74ACT16240DL carries Last Time Buy status, representing a final production window. The 74ACT16240DLR is Active, confirming ongoing manufacture and availability. For new designs or long-term production, the Active part (74ACT16240DLR) is preferred.

Q: Are there package compatibility concerns when substituting these parts?

A: The 48-TFSOP and 48-BSSOP packages differ in width (6.10mm vs. 7.50mm). Pin pitch and electrical connections remain compatible. PCB footprint verification is required to confirm the wider 48-BSSOP package fits within existing board space constraints.

Q: Do the substitute parts meet current environmental compliance requirements?

A: The Texas Instruments alternatives (74ACT16240DL and 74ACT16240DLR) are ROHS3 compliant. Both maintain MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental specifications.

Q: What are the output current specifications for these buffer devices?

A: All three parts deliver 24mA output current capability for both high and low logic states, supporting equivalent fan-out and drive requirements across applications.