PI3B3257QEX Equivalent & Substitute Parts

Part Overview

The PI3B3257QEX is a Multiplexer/Demultiplexer logic IC manufactured by Diodes Incorporated, configured as a 4 x 2:1 circuit in a 16-QSOP surface mount package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified based on matching electrical specifications, package compatibility, and functional equivalence within the multiplexer/demultiplexer logic category.

Substiute Parts

PI3B3257QEX

Diodes IncorporatedIn Stock: 77491PI3B3257QEX Datasheet

Current PartRFQ

74CBTLV3257QG

Renesas Electronics CorporationIn Stock: 237374CBTLV3257QG Datasheet

MFR RecommendedRFQ

74CBTLV3257QG8

Renesas Electronics CorporationIn Stock: 208974CBTLV3257QG8 Datasheet

MFR RecommendedRFQ

SN74CB3Q3257DBQR

Texas InstrumentsIn Stock: 4186SN74CB3Q3257DBQR Datasheet

MFR RecommendedRFQ

SN74CBTLV3257DBQR

Texas InstrumentsIn Stock: 25368SN74CBTLV3257DBQR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PI3B3257QEX are qualified based on the following criteria:

Primary Substitution Parameters:

• Package compatibility: 16-SSOP (0.154", 3.90mm Width) surface mount package
• Voltage supply range overlap: Minimum 3V operation required
• Operating temperature range: -40°C ~ 85°C
• RoHS3 compliance and REACH unaffected status
• Active product status

Functional Equivalence: Substitutes include both 4 x 2:1 and 4 x 1:2 multiplexer/demultiplexer configurations. The 4 x 1:2 variants (74CBTLV3257QG, 74CBTLV3257QG8, SN74CBTLV3257DBQR) operate with expanded voltage supply range (2.3V ~ 3.6V) and maintain identical package dimensions. The SN74CB3Q3257DBQR maintains the 4 x 2:1 circuit configuration with extended voltage compatibility.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain Active product status with full RoHS3 compliance and REACH unaffected certification, ensuring regulatory alignment with the original PI3B3257QEX component.

For 4 x 2:1 Circuit Requirement: The SN74CB3Q3257DBQR (Texas Instruments) provides direct functional equivalence with identical 4 x 2:1 configuration. This part accepts expanded voltage supply range (2.3V ~ 3.6V) compared to the PI3B3257QEX (3V ~ 3.6V), offering broader design flexibility. Moisture sensitivity level is MSL 2 (1 Year) versus MSL 1 (Unlimited) on the original part.

For 4 x 1:2 Circuit Variants: The 74CBTLV3257QG and 74CBTLV3257QG8 (Renesas Electronics) maintain MSL 1 (Unlimited) rating identical to the original part, with extended voltage supply range (2.3V ~ 3.6V). The SN74CBTLV3257DBQR (Texas Instruments) offers the highest inventory availability (25,300 pcs) with MSL 2 (1 Year) rating.

All substitute parts are packaged in 16-SSOP surface mount configuration with identical thermal and mechanical specifications, enabling direct PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 4 x 1:2 variants substitute for the 4 x 2:1 PI3B3257QEX? A: The 4 x 1:2 circuit configuration differs functionally from the 4 x 2:1 original part. Circuit configuration determines signal routing and multiplexing behavior. Substitution is valid only when the application circuit design accommodates the alternative configuration. The SN74CB3Q3257DBQR maintains the 4 x 2:1 configuration for direct functional equivalence.

Q: What is the significance of the voltage supply range difference? A: The PI3B3257QEX operates at 3V ~ 3.6V, while substitute parts operate at 2.3V ~ 3.6V. All substitute parts are compatible with the original part's voltage range since 3V ~ 3.6V falls within the extended range. The broader range on substitutes provides additional design flexibility for lower voltage applications.

Q: How does Moisture Sensitivity Level (MSL) affect component selection? A: MSL 1 (Unlimited) indicates no moisture sensitivity restrictions during storage and handling. MSL 2 (1 Year) requires controlled storage conditions and limits shelf life to one year from manufacturing. The PI3B3257QEX and Renesas parts carry MSL 1 rating. Texas Instruments parts carry MSL 2 rating. Selection depends on storage and handling capabilities in your supply chain.

Q: Are all substitute parts available in the same packaging options? A: The PI3B3257QEX is supplied in Tape & Reel (TR) packaging. Substitute parts are available in Tube (74CBTLV3257QG), Tape & Reel (74CBTLV3257QG8), and Cut Tape with Digi-Reel (SN74CB3Q3257DBQR, SN74CBTLV3257DBQR). Packaging selection does not affect electrical or mechanical compatibility, only logistics and handling procedures.

Q: Do all parts meet the same compliance standards? A: All parts are RoHS3 compliant and REACH unaffected. ECCN classification is EAR99 for all parts. HTSUS code is 8542.39.0001 for all parts. Regulatory compliance is equivalent across all options.