SN74S1053DB Equivalent & Substitute Parts

Part Overview

The SN74S1053DB is a Schottky Barrier Diode Bus-Termination Array IC manufactured by Texas Instruments, designed for 16-bit bus termination applications. This component is classified as a Logic device and is packaged in a 20-SSOP surface mount configuration with a width of 5.30mm.

The SN74S1053DB is currently in Last Time Buy status, indicating that the manufacturer has announced end-of-life for this specific part number variant. This product status necessitates identification of equivalent substitute components to ensure continued availability for new designs and ongoing production requirements. The substitute part maintains identical functional and electrical characteristics while offering active product status and improved inventory availability.

Substiute Parts

SN74S1053DB

Texas InstrumentsIn Stock: 5181SN74S1053DB Datasheet

Current PartRFQ

SN74S1053DBR

Texas InstrumentsIn Stock: 21519SN74S1053DBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74S1053DB is determined by strict equivalence across the following critical parameters:

Functional Parameters:

• Logic Type: Schottky Barrier Diode Bus-Termination Array
• Number of Bits: 16-bit configuration

Physical Parameters:

• Package / Case: 20-SSOP with 0.209" width (5.30mm)
• Mounting Type: Surface Mount

Environmental & Compliance Parameters:

• Operating Temperature Range: 0°C ~ 70°C
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part SN74S1053DBR meets all specified parameters and is manufactured by the same original equipment manufacturer (Texas Instruments), ensuring pin-for-pin compatibility and functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SN74S1053DBR

The SN74S1053DBR is the direct equivalent substitute for the SN74S1053DB. Both components are manufactured by Texas Instruments and share identical electrical, functional, and physical specifications. The SN74S1053DBR differs only in product status, which is currently Active, providing assured long-term availability and supply continuity.

Compliance & Certification: Both the main part and substitute maintain ROHS3 compliance and carry identical environmental ratings. The MSL rating of 1 (Unlimited) applies to both variants, indicating no moisture sensitivity restrictions during storage or handling.

Inventory Considerations: The SN74S1053DBR maintains significantly higher inventory levels (21,480 pieces) compared to the SN74S1053DB (5,100 pieces), supporting sustained production requirements and reducing supply chain risk.

Design Implementation: Direct substitution is applicable for all existing designs utilizing the SN74S1053DB. No circuit modifications, PCB layout changes, or firmware updates are required. The 20-SSOP package footprint remains identical, enabling drop-in replacement at the component level.

Frequently Asked Questions (FAQ)

Q: Can the SN74S1053DBR be used as a direct replacement for the SN74S1053DB?

A: Yes. The SN74S1053DBR is a direct equivalent substitute. Both components are identical in logic type, bit configuration, package, mounting type, operating temperature range, and compliance certifications. Pin-for-pin compatibility is assured.

Q: What is the difference between SN74S1053DB and SN74S1053DBR?

A: The primary difference is product status. The SN74S1053DB is in Last Time Buy status, while the SN74S1053DBR is Active. Both share identical electrical and physical specifications. The "R" suffix in the SN74S1053DBR designation indicates a tape-and-reel packaging variant, which does not affect functional performance.

Q: Are there any temperature or environmental limitations when substituting these parts?

A: No. Both components operate across the identical temperature range of 0°C to 70°C and maintain the same MSL rating of 1 (Unlimited). Environmental performance is equivalent.

Q: Is the 20-SSOP package footprint identical between both parts?

A: Yes. Both the SN74S1053DB and SN74S1053DBR utilize the 20-SSOP package with a width of 0.209" (5.30mm). PCB footprints and land patterns are identical, enabling direct component substitution without layout modifications.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both the SN74S1053DB and SN74S1053DBR are ROHS3 compliant, meeting current environmental and regulatory standards for electronic components.

Q: Why is the SN74S1053DB being discontinued?

A: The SN74S1053DB has been designated as Last Time Buy by Texas Instruments. The SN74S1053DBR remains in active production and serves as the recommended substitute for all new designs and ongoing production.