PI5C3257SE Equivalent & Substitute Parts

Part Overview

The PI5C3257SE is a 4 x 2:1 Multiplexer/Demultiplexer logic IC manufactured by Diodes Incorporated in a 16-SOIC surface mount package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity. The part operates on single supply voltage and is suitable for signal routing and multiplexing applications in digital systems.

Substiute Parts

PI5C3257SE

Diodes IncorporatedIn Stock: 1185PI5C3257SE Datasheet

Current PartRFQ

74FST3257DR2G

onsemiIn Stock: 443774FST3257DR2G Datasheet

MFR RecommendedRFQ

CBT3257AD,118

NXP SemiconductorsIn Stock: 46189CBT3257AD,118 Datasheet

MFR RecommendedRFQ

SN74CBT3257CD

Texas InstrumentsIn Stock: 1107SN74CBT3257CD Datasheet

MFR RecommendedRFQ

SN74CBT3257CDR

Texas InstrumentsIn Stock: 2314SN74CBT3257CDR Datasheet

MFR RecommendedRFQ

SN74CBT3257D

Texas InstrumentsIn Stock: 2177SN74CBT3257D Datasheet

MFR RecommendedRFQ

SN74CBT3257DR

Texas InstrumentsIn Stock: 2629SN74CBT3257DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PI5C3257SE are qualified based on the following electrical and mechanical parameters:

Functional Equivalence Criteria:

• Circuit configuration: 4 x 2:1 multiplexer/demultiplexer topology
• Independent circuits: 1
• Type: Multiplexer/Demultiplexer logic IC
• Voltage supply source: Single supply operation

Electrical Compatibility Criteria:

• Operating temperature range: -40°C ~ 85°C (minimum requirement)
• Voltage supply range: Must encompass or exceed the PI5C3257SE range of 4.75V ~ 5.25V
• RoHS3 compliance and MSL rating of 1

Mechanical Compatibility Criteria:

• Package type: 16-SOIC surface mount
• Pin count: 16 pins
• Package width: 0.154" to 0.295" (SOIC variants acceptable)

All substitute parts listed meet these criteria and are available from active or last-time-buy inventory channels.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Active Status: The SN74CBT3257CD and SN74CBT3257CDR from Texas Instruments are the preferred substitutes. Both parts maintain active product status, ensuring long-term availability and manufacturing support. The SN74CBT3257CDR variant in Cut Tape & Digi-Reel packaging offers 2300 units in current inventory and is suitable for automated assembly processes.

Alternative - High Inventory Availability: The CBT3257AD,118 from NXP Semiconductors (Nexperia) is available in the highest quantity (46088 units) and maintains active product status. This part provides extended supply security for high-volume applications.

Secondary Alternatives - Last Time Buy Status: The 74FST3257DR2G (onsemi) and SN74CBT3257D (Texas Instruments) are classified as last-time-buy. These parts remain functionally equivalent but have limited future availability. Selection should be based on immediate project requirements and inventory planning.

All recommended substitutes are ROHS3 compliant with MSL rating of 1, matching the compliance profile of the original PI5C3257SE.

Frequently Asked Questions (FAQ)

Q: Can the PI5C3257SE be directly replaced with any of these substitute parts? A: Yes. All listed substitutes share the same 4 x 2:1 multiplexer/demultiplexer circuit configuration, single supply voltage operation, -40°C to 85°C temperature range, and 16-SOIC surface mount package. Pin-for-pin compatibility is maintained across all alternatives.

Q: What is the difference between the 16-SOIC package widths (0.295" vs 0.154")? A: The PI5C3257SE uses a 0.295" (7.50mm) wide SOIC package, while most substitutes use the standard 0.154" (3.90mm) SOIC width. Both are 16-pin SOIC packages with identical pin spacing and electrical characteristics. The narrower package of substitute parts is the modern standard and is mechanically compatible with typical PCB layouts designed for standard SOIC components.

Q: Which substitute offers the best long-term availability? A: The SN74CBT3257CD and SN74CBT3257CDR from Texas Instruments maintain active product status, providing the longest availability horizon. The CBT3257AD,118 from NXP Semiconductors also maintains active status with the highest current inventory level.

Q: Are there voltage supply differences between the PI5C3257SE and substitutes? A: The PI5C3257SE operates at 4.75V ~ 5.25V, while substitutes operate at 4.5V ~ 5.5V or 4.0V ~ 5.5V. All substitutes accept the original supply voltage range, providing full electrical compatibility. The wider supply ranges of substitutes offer additional design margin.

Q: What packaging options are available for the substitute parts? A: Substitute parts are available in multiple packaging formats: Tape & Reel (TR), Bulk, Tube, and Cut Tape (CT) & Digi-Reel. Selection depends on assembly method and order quantity requirements.