PI5C3126QEX Equivalent & Substitute Parts

Part Overview

The PI5C3126QEX is a bus switch logic IC manufactured by Diodes Incorporated, configured as a 1 x 1:1 circuit with 4 independent circuits in a 16-QSOP surface mount package. This component is classified as Last Time Buy, indicating limited future availability. Equivalent and substitute parts are necessary to ensure design continuity, maintain supply chain flexibility, and support long-term production requirements.

Substiute Parts

PI5C3126QEX

Diodes IncorporatedIn Stock: 9361PI5C3126QEX Datasheet

Current PartRFQ

PI5C3125QEX

Diodes IncorporatedIn Stock: 17979PI5C3125QEX Datasheet

Parametric EquivalentRFQ

QS3126QG

IDT, Integrated Device Technology IncIn Stock: 1965QS3126QG Datasheet

MFR RecommendedRFQ

QS3126QG8

IDT, Integrated Device Technology IncIn Stock: 3327QS3126QG8 Datasheet

MFR RecommendedRFQ

SN74CBT3125CDBQR

Texas InstrumentsIn Stock: 806SN74CBT3125CDBQR Datasheet

Parametric EquivalentRFQ

SN74CBT3125DBQR

Texas InstrumentsIn Stock: 3870SN74CBT3125DBQR Datasheet

Parametric EquivalentRFQ

SN74CBT3126DBQR

Texas InstrumentsIn Stock: 5191SN74CBT3126DBQR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PI5C3126QEX is determined by the following critical parameters:

• Circuit configuration (1 x 1:1 with 4 independent circuits)
• Voltage supply range (4.5V ~ 5.5V or compatible range)
• Operating temperature range (-40°C ~ 85°C)
• Package type (16-SSOP / 16-QSOP)
• Mounting type (Surface Mount)
• RoHS and environmental compliance status

Substitute parts are grouped into two categories: parametric equivalents from different manufacturers and manufacturer-recommended alternatives. All listed substitutes maintain identical or compatible electrical specifications and physical packaging dimensions, enabling direct replacement in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring immediate substitution of the PI5C3126QEX, the PI5C3125QEX from Diodes Incorporated is the primary parametric equivalent, offering identical electrical specifications, packaging, and compliance certifications with higher current inventory availability (17,920 pcs vs. 9,315 pcs).

The Texas Instruments SN74CBT3125CDBQR and SN74CBT3126DBQR are active product alternatives with full ROHS3 compliance and equivalent electrical performance. The SN74CBT3125CDBQR maintains Active product status, providing superior long-term availability compared to Last Time Buy designations.

The IDT QS3126QG and QS3126QG8 are manufacturer-recommended alternatives with Active product status. These parts operate within a narrower voltage supply window (4.75V ~ 5.25V) compared to the primary part (4.5V ~ 5.5V), requiring verification of circuit design margins before implementation.

For new designs or long-term production planning, prioritize parts with Active product status to ensure sustained supply chain support.

Frequently Asked Questions (FAQ)

Q: Can the PI5C3125QEX directly replace the PI5C3126QEX?

A: Yes. Both parts share identical electrical specifications, voltage supply range (4.5V ~ 5.5V), operating temperature range (-40°C ~ 85°C), package type (16-QSOP), and RoHS compliance status. Direct substitution is supported without circuit modification.

Q: What is the difference between the IDT QS3126QG and QS3126QG8?

A: Both parts are functionally equivalent with identical circuit configuration, package, and operating temperature range. The primary difference is packaging format: QS3126QG is supplied in Bulk packaging, while QS3126QG8 is also supplied in Bulk. Both maintain the same electrical specifications and are interchangeable in circuit applications.

Q: Are the Texas Instruments SN74CBT3125CDBQR and SN74CBT3126DBQR interchangeable?

A: Yes. Both parts maintain identical electrical specifications, voltage supply range (4.5V ~ 5.5V), operating temperature range (-40°C ~ 85°C), and 16-SSOP package dimensions. The primary distinction is product status: SN74CBT3125CDBQR is Active, while SN74CBT3126DBQR is Last Time Buy.

Q: What is the voltage supply compatibility between the PI5C3126QEX and IDT QS3126QG?

A: The PI5C3126QEX operates at 4.5V ~ 5.5V, while the IDT QS3126QG operates at 4.75V ~ 5.25V. The IDT part has a narrower voltage window. Substitution is permissible only if the circuit design operates within the overlapping range (4.75V ~ 5.25V). Verify circuit voltage margins before implementation.

Q: Does moisture sensitivity level affect substitution decisions?

A: Moisture sensitivity level (MSL) indicates handling and storage requirements. The PI5C3126QEX has MSL 1 (Unlimited), while Texas Instruments alternatives have MSL 2 (1 Year). MSL 2 components require controlled storage conditions and have a one-year shelf life from manufacturing. Select based on supply chain handling capabilities and storage infrastructure.

Q: Are all substitute parts RoHS3 compliant?

A: The Diodes Incorporated parts (PI5C3126QEX, PI5C3125QEX) and Texas Instruments parts (SN74CBT3125CDBQR, SN74CBT3125DBQR, SN74CBT3126DBQR) are ROHS3 compliant. The IDT parts (QS3126QG, QS3126QG8) do not specify RoHS status in the provided data. Verify compliance requirements with your procurement and regulatory teams before selection.