7SB3257DFT2G Equivalent & Substitute Parts

Part Overview

The 7SB3257DFT2G is a Multiplexer/Demultiplexer IC with 1 x 2:1 circuit configuration manufactured by onsemi. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part is packaged in 6-TSSOP (SC-88/SC70-6/SOT-363) surface mount format and operates across a single supply voltage range of 4V to 5.5V with an operating temperature range of -55°C to 125°C.

Substiute Parts

7SB3257DFT2G

onsemiIn Stock: 9087SB3257DFT2G Datasheet

Current PartRFQ

TC7SB3157CFU,LF(CT

Toshiba Semiconductor and StorageIn Stock: 4434TC7SB3157CFU,LF(CT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7SB3257DFT2G is determined by the following critical parameters:

• Circuit configuration: 1 x 2:1 Multiplexer/Demultiplexer topology
• Package type: 6-TSSOP/SC-88/SOT-363 surface mount format
• Voltage supply source: Single supply operation
• Functional classification: Logic category multiplexer/demultiplexer

The TC7SB3157CFU,LF(CT qualifies as a substitute based on matching circuit configuration, package format, and functional category. While the substitute part supports an extended lower voltage range (1.65V minimum versus 4V minimum) and operates across a wider upper temperature limit (125°C maximum), these parameters represent enhanced capability rather than incompatibility. The substitute maintains single supply operation and identical package specifications required for direct replacement.

Parameter Comparison

Engineering Selection Recommendations

The TC7SB3157CFU,LF(CT from Toshiba Semiconductor and Storage is the identified substitute for the obsolete 7SB3257DFT2G. Selection of this substitute is supported by the following factors:

• Both parts maintain identical 1 x 2:1 multiplexer/demultiplexer circuit configuration
• Package specifications are equivalent: 6-TSSOP/SC-88/SOT-363 surface mount format
• Single supply voltage operation is preserved in both designs
• Both components achieve ROHS3 compliance and REACH unaffected status
• The substitute part carries active product status, ensuring ongoing availability and supply chain continuity
• Moisture sensitivity classification remains unchanged at MSL 1 (Unlimited)

The substitute part's extended lower voltage specification (1.65V minimum) and narrower lower temperature limit (-40°C minimum) do not preclude substitution in applications designed for the original part's 4V to 5.5V and -55°C to 125°C operating ranges.

Frequently Asked Questions (FAQ)

Q: Can TC7SB3157CFU,LF(CT directly replace 7SB3257DFT2G in existing designs?

A: Yes. Both parts share identical circuit configuration (1 x 2:1), package format (6-TSSOP/SC-88/SOT-363), and single supply voltage operation. The substitute part's extended lower voltage capability and narrower lower temperature range do not create incompatibility for applications operating within the original part's specified ranges.

Q: What is the primary reason for substitution?

A: The 7SB3257DFT2G is classified as obsolete. The TC7SB3157CFU,LF(CT maintains active product status, providing assured supply availability and production continuity.

Q: Are there package compatibility concerns?

A: No. Both parts use identical 6-TSSOP/SC-88/SOT-363 surface mount packaging. PCB footprints and assembly processes remain unchanged.

Q: Do compliance certifications differ between the parts?

A: No. Both components are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity classification.

Q: What voltage ranges are supported by each part?

A: The original 7SB3257DFT2G operates at 4V to 5.5V. The substitute TC7SB3157CFU,LF(CT supports 1.65V to 5.5V, providing extended lower voltage capability while maintaining full compatibility within the original part's specified range.

Q: Are there operating temperature differences?

A: The original part operates from -55°C to 125°C. The substitute operates from -40°C to 125°C. Applications requiring operation below -40°C must retain the original part or identify alternative solutions.