SN74F1056D Equivalent & Substitute Parts

Part Overview

The SN74F1056D is a Schottky Barrier Diode Bus-Termination Array IC manufactured by Texas Instruments, designed for 8-bit bus termination applications. This 16-SOIC surface mount device operates across the 0°C to 70°C temperature range and is currently classified as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is essential for design continuity, long-term supply chain planning, and ensuring uninterrupted production for systems utilizing this component.

Substiute Parts

SN74F1056D

Texas InstrumentsIn Stock: 1079SN74F1056D Datasheet

Current PartRFQ

SN74F1056DR

Texas InstrumentsIn Stock: 871SN74F1056DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74F1056D is determined by strict alignment with the following critical parameters:

• Logic Type: Schottky Barrier Diode Bus-Termination Array (functional equivalence)
• Number of Bits: 8-bit configuration
• Package / Case: 16-SOIC (0.154", 3.90mm Width) — identical physical and electrical footprint
• Mounting Type: Surface Mount
• Operating Temperature Range: 0°C ~ 70°C
• Compliance Standards: ROHS3 Compliant, REACH Unaffected

The SN74F1056DR qualifies as a direct substitute based on identical electrical specifications, pinout, and package geometry. The primary distinction is packaging format: the SN74F1056D is supplied in Tube packaging, while the SN74F1056DR is supplied in Tape & Reel (TR) format. Both parts share the same base product number (74F1056) and maintain full functional and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SN74F1056DR is the manufacturer-recommended substitute for the SN74F1056D. Both parts are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications, including pinout, package dimensions, and operating characteristics.

Product Status Consideration: The SN74F1056D is designated Last Time Buy, indicating limited future availability. The SN74F1056DR maintains Active product status, ensuring continued supply and support from the manufacturer.

Compliance Alignment: Both parts satisfy ROHS3 compliance and REACH requirements, maintaining regulatory compatibility across applications.

Packaging Distinction: The substitution involves a change from Tube to Tape & Reel (TR) packaging. This format difference does not affect component functionality or electrical performance but may impact procurement workflows and automated assembly processes. Organizations utilizing automated pick-and-place equipment typically benefit from Tape & Reel format, while manual assembly operations may accommodate either format.

Frequently Asked Questions (FAQ)

Q: Are the SN74F1056D and SN74F1056DR electrically identical?

A: Yes. Both parts are Schottky Barrier Diode Bus-Termination Arrays with identical 8-bit configurations, operating temperature ranges (0°C ~ 70°C), and 16-SOIC package specifications. Electrical performance and pinout are equivalent.

Q: What is the primary difference between these two parts?

A: The primary difference is packaging format. The SN74F1056D is supplied in Tube packaging, while the SN74F1056DR is supplied in Tape & Reel (TR) format. Both formats contain the same component with identical specifications.

Q: Can I use SN74F1056DR as a direct replacement for SN74F1056D on existing PCBs?

A: Yes. The SN74F1056DR is a direct pin-for-pin and functionally equivalent replacement. No circuit modifications or PCB redesign is required.

Q: Why is the SN74F1056D marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments is discontinuing this product variant. The SN74F1056DR, with Active product status, represents the ongoing manufacturing option and is recommended for new designs and long-term supply planning.

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

A: No. Both parts maintain identical ROHS3 compliance, REACH Unaffected status, and MSL ratings. Regulatory and environmental compliance is equivalent.

Q: Which part should I specify for new designs?

A: The SN74F1056DR is recommended for new designs due to its Active product status and assured long-term availability. This ensures supply chain continuity and eliminates obsolescence risk.