74ACT16543MTD Equivalent & Substitute Parts

Part Overview

The 74ACT16543MTD is a non-inverting transceiver IC manufactured by onsemi, featuring 2 elements with 8 bits per element and 3-state output capability. This component operates within the 4.5V to 5.5V supply voltage range and is housed in a 56-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

74ACT16543MTD

onsemiIn Stock: 101274ACT16543MTD Datasheet

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74ACT16543DGGR

Texas InstrumentsIn Stock: 215274ACT16543DGGR Datasheet

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74ACT16543DL

Texas InstrumentsIn Stock: 140074ACT16543DL Datasheet

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74ACT16543DLR

Texas InstrumentsIn Stock: 189574ACT16543DLR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74ACT16543MTD are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Core Electrical Parameters:

• Logic type: Transceiver, Non-Inverting
• Number of elements: 2
• Bits per element: 8
• Output type: 3-State
• Output current capability: 24mA (high and low)
• Supply voltage range: 4.5V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C

Mechanical Parameters:

• Mounting type: Surface Mount
• Package family: 56-pin TSSOP or SSOP variants
• MSL rating: 1 (Unlimited)

Substitutes are grouped into two categories based on package configuration: those maintaining the original 56-TFSOP footprint and those utilizing the 56-BSSOP variant. Both package types are mechanically compatible with surface mount assembly processes and maintain identical electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

74ACT16543DGGR (Texas Instruments) is the primary substitute for direct replacement of the 74ACT16543MTD. This part maintains identical package geometry (56-TFSOP), electrical specifications, and operating parameters. The component carries Active product status and ROHS3 compliance certification, ensuring long-term availability and regulatory alignment for new designs and production runs.

74ACT16543DLR (Texas Instruments) provides an alternative substitute with Active product status and ROHS3 compliance. This variant uses the 56-BSSOP package, which has a larger body width (7.50mm versus 6.10mm). Selection of this part requires PCB layout modification to accommodate the different package footprint but maintains all electrical and thermal specifications.

74ACT16543DL (Texas Instruments) is available with Last Time Buy status, indicating limited future availability. This part also uses the 56-BSSOP package and requires PCB layout adjustment. Use of this variant is recommended only when existing inventory must be consumed or when 56-BSSOP footprint compatibility is already established in the design.

Frequently Asked Questions (FAQ)

Q: Can 74ACT16543DGGR be used as a direct drop-in replacement for 74ACT16543MTD?

A: Yes. The 74ACT16543DGGR maintains identical electrical specifications, operating temperature range, supply voltage requirements, and package footprint (56-TFSOP). No circuit modifications or PCB layout changes are required.

Q: What is the difference between 74ACT16543DGGR and 74ACT16543DLR?

A: Both parts are functionally equivalent in electrical performance. The primary difference is package geometry: 74ACT16543DGGR uses 56-TFSOP (6.10mm width), while 74ACT16543DLR uses 56-BSSOP (7.50mm width). PCB footprint compatibility must be verified before selection.

Q: Why is the 74ACT16543MTD classified as obsolete?

A: The original onsemi part has reached end-of-life status. Texas Instruments continues to manufacture functionally identical variants under the same base part number (74ACT16543), ensuring design continuity through equivalent substitutes.

Q: Are all substitute parts RoHS compliant?

A: Yes. All three Texas Instruments substitutes (74ACT16543DGGR, 74ACT16543DL, and 74ACT16543DLR) carry ROHS3 compliance certification, meeting current environmental and regulatory requirements.

Q: What is the MSL rating for these parts?

A: All parts, including the original 74ACT16543MTD and all substitutes, carry MSL rating 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling.

Q: Can I use 74ACT16543DL if my design already accommodates the 56-BSSOP package?

A: Yes, provided that your production timeline accommodates Last Time Buy status. This part is electrically and mechanically compatible but has limited future availability. For new designs or long-term production, 74ACT16543DLR (Active status) is the preferred 56-BSSOP option.