PI5C3253Q Equivalent & Substitute Parts

Part Overview

The PI5C3253Q is a Multiplexer/Demultiplexer logic IC with 2 x 4:1 circuit configuration in a 16-QSOP package, manufactured by Diodes Incorporated. This part is classified as obsolete, with 3,523 units currently in stock. Due to its obsolete status, identifying functionally equivalent and mechanically compatible substitute parts is essential for design continuity and supply chain management. Active alternatives from other manufacturers provide equivalent electrical performance with improved product lifecycle support.

Substiute Parts

PI5C3253Q

Diodes IncorporatedIn Stock: 3554PI5C3253Q Datasheet

Current PartRFQ

PI5C3253QE

Diodes IncorporatedIn Stock: 2848PI5C3253QE Datasheet

DirectRFQ

QS3253QG

Renesas Electronics CorporationIn Stock: 3892QS3253QG Datasheet

DirectRFQ

QS3253QG8

Renesas Electronics CorporationIn Stock: 2672QS3253QG8 Datasheet

DirectRFQ

CBT3253ADS,118

Nexperia USA Inc.In Stock: 750CBT3253ADS,118 Datasheet

MFR RecommendedRFQ

SN74CBT3253CDBQR

Texas InstrumentsIn Stock: 2287SN74CBT3253CDBQR Datasheet

MFR RecommendedRFQ

SN74CBT3253CDBR

Texas InstrumentsIn Stock: 2090SN74CBT3253CDBR Datasheet

MFR RecommendedRFQ

SN74CBT3253DBQR

Texas InstrumentsIn Stock: 5815SN74CBT3253DBQR Datasheet

MFR RecommendedRFQ

SN74CBT3253DBR

Texas InstrumentsIn Stock: 6381SN74CBT3253DBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PI5C3253Q is determined by strict alignment of the following parameters:

• Circuit Type & Configuration: All substitutes must be 2 x 4:1 Multiplexer/Demultiplexer with 1 independent circuit
• Voltage Supply Range: PI5C3253Q operates at 4.75V ~ 5.25V; CBT series variants operate at 4.5V ~ 5.5V (wider range, backward compatible)
• Operating Temperature: All parts maintain -40°C ~ 85°C range
• Package Type: 16-SSOP surface mount package with compatible pinout
• Mounting Technology: All parts are surface mount compatible

Substitute parts are grouped into two categories:

1. Direct Diodes Incorporated Replacement: PI5C3253QE (active product status, RoHS3 compliant)
2. Cross-Manufacturer Equivalents: Renesas Electronics (QS3253QG, QS3253QG8), Nexperia (CBT3253ADS,118), and Texas Instruments (SN74CBT3253 series variants)

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: PI5C3253QE (Diodes Incorporated)

The PI5C3253QE is the direct active replacement for the obsolete PI5C3253Q. It maintains identical electrical specifications, voltage supply range (4.75V ~ 5.25V), and package dimensions (16-SSOP, 0.154", 3.90mm width). The part is RoHS3 compliant and carries MSL 1 rating. This option requires no design modification and provides the shortest qualification timeline.

Secondary Recommendations: QS3253QG or QS3253QG8 (Renesas Electronics)

Both Renesas parts maintain the same voltage supply range and package specifications as the PI5C3253Q. They are active products with RoHS3 compliance and MSL 1 ratings. These options are suitable for designs where cross-manufacturer sourcing is acceptable.

Alternative Options: SN74CBT3253 series (Texas Instruments)

Texas Instruments CBT3253 variants offer a wider voltage supply range (4.5V ~ 5.5V), providing additional design margin. However, note the following considerations:

• SN74CBT3253CDBQR and SN74CBT3253DBQR: 16-SSOP (0.154", 3.90mm) package, compatible with PI5C3253Q footprint
• SN74CBT3253CDBR and SN74CBT3253DBR: 16-SSOP (0.209", 5.30mm) package, requires PCB layout verification
• SN74CBT3253DBQR and SN74CBT3253DBR carry Last Time Buy status, indicating limited future availability

Nexperia Option: CBT3253ADS,118

The Nexperia part provides equivalent functionality with RoHS3 compliance and MSL 1 rating. Inventory availability is lower (736 units) compared to other alternatives.

Frequently Asked Questions (FAQ)

Q: Can I use SN74CBT3253 variants as direct replacements for PI5C3253Q?

A: Yes, with voltage supply range consideration. The SN74CBT3253 series operates at 4.5V ~ 5.5V, which encompasses the PI5C3253Q range of 4.75V ~ 5.25V. Ensure your design operates within the overlapping voltage window. Package width variants (0.154" vs. 0.209") must match your PCB footprint.

Q: What is the difference between the 0.154" and 0.209" package widths?

A: Both are 16-SSOP packages but with different body widths. The 0.154" (3.90mm) width is the standard narrow variant; the 0.209" (5.30mm) width is the wider variant. These are not interchangeable on the same PCB footprint. Verify your design footprint before selecting a substitute.

Q: Why is PI5C3253Q marked as obsolete?

A: The PI5C3253Q has reached end-of-life status. The active replacement is PI5C3253QE, which provides identical functionality with improved compliance (RoHS3) and ongoing manufacturer support.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all listed substitute parts are RoHS3 compliant. The original PI5C3253Q is RoHS non-compliant. If your application requires RoHS compliance, any substitute part listed here meets that requirement.

Q: What does MSL 1 vs. MSL 2 mean for my design?

A: MSL (Moisture Sensitivity Level) indicates storage and handling requirements. MSL 1 (Unlimited) parts have no moisture-related storage restrictions. MSL 2 (1 Year) parts must be used within one year of the moisture barrier bag opening. For most applications, this difference is not critical, but verify your manufacturing process requirements.

Q: Which substitute has the highest inventory availability?

A: SN74CBT3253DBR (Texas Instruments) has the highest inventory at 6,301 units, followed by SN74CBT3253DBQR at 5,800 units. However, both are marked Last Time Buy, indicating limited future restocking. For long-term supply security, PI5C3253QE, QS3253QG, or QS3253QG8 are preferable as active products.

Q: Can I mix different substitute parts in the same design?

A: Yes, all listed substitutes are functionally equivalent for the 2 x 4:1 multiplexer/demultiplexer application. However, maintain consistent package selection (0.154" or 0.209" width) across your PCB to avoid layout complications.