PI5C3257LEX Equivalent & Substitute Parts

Part Overview

The PI5C3257LEX is a 4 x 2:1 Multiplexer/Demultiplexer logic IC manufactured by Diodes Incorporated in a 16-TSSOP surface mount package. This component is classified as Last Time Buy, indicating limited availability and the necessity to identify functionally equivalent alternatives for ongoing design requirements and future production needs.

Substiute Parts

PI5C3257LEX

Diodes IncorporatedIn Stock: 15451PI5C3257LEX Datasheet

Current PartRFQ

74FST3257DTR2G

onsemiIn Stock: 330374FST3257DTR2G Datasheet

MFR RecommendedRFQ

CBT3257APW,118

Nexperia USA Inc.In Stock: 3196CBT3257APW,118 Datasheet

MFR RecommendedRFQ

FST3257MTCX

onsemiIn Stock: 55297FST3257MTCX Datasheet

MFR RecommendedRFQ

SN74CBT3257CPW

Texas InstrumentsIn Stock: 2206SN74CBT3257CPW Datasheet

MFR RecommendedRFQ

SN74CBT3257CPWR

Texas InstrumentsIn Stock: 47791SN74CBT3257CPWR Datasheet

MFR RecommendedRFQ

SN74CBT3257PW

Texas InstrumentsIn Stock: 2324SN74CBT3257PW Datasheet

MFR RecommendedRFQ

SN74CBT3257PWR

Texas InstrumentsIn Stock: 2476SN74CBT3257PWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PI5C3257LEX is determined by the following critical parameters:

Mandatory Matching Criteria:

• Circuit configuration: 4 x 2:1 Multiplexer/Demultiplexer
• Package type: 16-TSSOP surface mount
• Mounting type: Surface mount
• Independent circuits: 1
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)

Allowable Parameter Variations:

• Voltage supply range: Substitute must accommodate the PI5C3257LEX operating range of 4.75V ~ 5.25V
• Operating temperature: Must support -40°C ~ 85°C minimum
• Packaging format: Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®, or Tube formats are interchangeable for the same component
• Product status: Active or Last Time Buy status does not affect functional equivalence
• Manufacturer: Different manufacturers producing identical logic functions are acceptable

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

CBT3257APW,118 (Nexperia USA Inc.) and SN74CBT3257CPWR (Texas Instruments) are recommended as primary alternatives. Both components maintain Active product status, ensuring long-term availability and continued manufacturer support. The CBT3257APW,118 is available in Tape & Reel format matching the original packaging, while SN74CBT3257CPWR offers Cut Tape & Digi-Reel® format with higher inventory levels (47,740 pcs).

Secondary Substitutes (Last Time Buy Status):

74FST3257DTR2G (onsemi) and SN74CBT3257PWR (Texas Instruments) are functionally equivalent but carry Last Time Buy status. These components are suitable for immediate replacement but should not be selected for new long-term production planning.

Obsolete Alternative:

FST3257MTCX (onsemi) is classified as Obsolete and should be avoided for new designs despite adequate inventory availability.

Voltage Supply Consideration:

All substitute parts accommodate the PI5C3257LEX operating voltage range of 4.75V ~ 5.25V. The 74FST3257DTR2G and FST3257MTCX offer extended lower voltage operation (4V and 3V respectively), providing additional design flexibility in low-voltage applications.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for PI5C3257LEX?

A: Yes, all listed substitute parts are functionally equivalent for the 4 x 2:1 Multiplexer/Demultiplexer logic function. All maintain identical circuit configuration, package type (16-TSSOP), operating temperature range (-40°C ~ 85°C), and compliance certifications (ROHS3, REACH Unaffected).

Q: Does packaging format (Tape & Reel, Cut Tape, or Tube) affect electrical performance?

A: No. Packaging format affects only the physical delivery and handling method. Electrical performance and functional characteristics remain identical across all packaging formats for the same component.

Q: Which substitute should I select for new production designs?

A: Select components with Active product status: CBT3257APW,118 (Nexperia) or SN74CBT3257CPWR (Texas Instruments). These ensure continued availability and manufacturer support beyond the Last Time Buy window of the PI5C3257LEX.

Q: Are there voltage supply differences I should consider?

A: All substitutes accommodate the PI5C3257LEX supply range of 4.75V ~ 5.25V. Some alternatives (74FST3257DTR2G, FST3257MTCX) support lower minimum voltages, which may be beneficial for low-voltage system designs but is not required for standard 5V applications.

Q: What is the difference between Last Time Buy and Active product status?

A: Last Time Buy indicates the manufacturer will cease production after current inventory is depleted. Active status indicates ongoing production and long-term availability. For new designs, Active status components are preferred.

Q: Can I mix different substitute parts within the same design or production batch?

A: Yes. All substitute parts are electrically and mechanically equivalent. Mixing different manufacturers or packaging formats does not affect circuit performance, though inventory management and procurement may be simplified by standardizing on a single part number.