SN74ACT1073DW Equivalent & Substitute Parts

Part Overview

The SN74ACT1073DW is a 16-bit bus termination array IC manufactured by Texas Instruments in a 20-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production with limited availability. Bus termination arrays are essential in high-speed digital systems to manage signal integrity by providing controlled impedance termination on data and address buses. The transition from Last Time Buy status to active alternatives necessitates identification of functionally equivalent substitute components to ensure design continuity and long-term supply chain reliability.

Substiute Parts

SN74ACT1073DW

Texas InstrumentsIn Stock: 875SN74ACT1073DW Datasheet

Current PartRFQ

SN74ACT1073DWR

Texas InstrumentsIn Stock: 3437SN74ACT1073DWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74ACT1073DW is determined by strict equivalence across the following critical parameters:

• Logic Function: Bus Termination Array with 16-bit configuration
• Electrical Specifications: Supply voltage range 4.5V ~ 5.5V and operating temperature range -40°C ~ 85°C
• Package Compatibility: 20-SOIC surface mount package with identical pinout and mechanical dimensions
• Compliance Standards: ROHS3 compliance and MSL Level 1 rating
• Base Product Number: 74ACT1073 series designation

The SN74ACT1073DWR qualifies as a direct substitute based on identical electrical characteristics, package specifications, and compliance certifications. The primary distinction is packaging format: the original part is supplied in Tube packaging (Last Time Buy status), while the substitute is available in Tape & Reel format with Active product status.

Parameter Comparison

Engineering Selection Recommendations

The SN74ACT1073DWR is the direct functional equivalent of the SN74ACT1073DW. Both components share identical electrical specifications, pinout, and mechanical package dimensions. The SN74ACT1073DWR is recommended for new designs and ongoing production due to its Active product status and continuous availability. For existing inventory of SN74ACT1073DW units, cross-compatibility is confirmed at the functional and physical level, enabling seamless integration into PCB assemblies without design modification.

The transition from Tube to Tape & Reel packaging affects only procurement and assembly processes. Tape & Reel format is standard for automated pick-and-place assembly operations and provides superior handling characteristics for high-volume manufacturing. ROHS3 compliance and MSL Level 1 rating are maintained across both variants, ensuring regulatory and environmental compatibility.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT1073DWR be used as a direct replacement for SN74ACT1073DW in existing designs?

A: Yes. Both components are electrically and mechanically identical. The SN74ACT1073DWR operates within the same voltage range (4.5V ~ 5.5V), temperature range (-40°C ~ 85°C), and provides identical 16-bit bus termination functionality in the same 20-SOIC package. PCB layout and schematic require no modification.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging supplies components in plastic tubes for manual handling and small-quantity applications. Tape & Reel packaging places components on continuous carrier tape for automated assembly equipment. Both formats contain identical die and electrical performance. Tape & Reel is standard for production volumes and automated manufacturing.

Q: Are there any compliance or certification differences between these parts?

A: No. Both SN74ACT1073DW and SN74ACT1073DWR carry identical ROHS3 compliance, MSL Level 1 rating, REACH Unaffected status, and ECCN/HTSUS classifications. Regulatory and environmental requirements are equivalent.

Q: Why is SN74ACT1073DW marked as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments has discontinued production of this part number. The SN74ACT1073DWR remains in Active production with the same functionality, making it the recommended path for continued supply chain access.

Q: Are pin assignments identical between SN74ACT1073DW and SN74ACT1073DWR?

A: Yes. Both components use the 20-SOIC package with identical pinout. No PCB rework or design changes are required for substitution.