PI3B3861LEX Bus Switch 10 x 1:1 Equivalent & Substitute Parts

Part Overview

The PI3B3861LEX is a logic bus switch IC manufactured by Diodes Incorporated, configured as a 10 x 1:1 multiplexer in a 24-TSSOP surface mount package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are necessary to address supply chain availability, packaging preferences, manufacturer selection, or specific application requirements such as automotive qualification.

Substiute Parts

PI3B3861LEX

Diodes IncorporatedIn Stock: 4659PI3B3861LEX Datasheet

Current PartRFQ

74CBTLV3861PGG

IDT, Integrated Device Technology IncIn Stock: 151174CBTLV3861PGG Datasheet

MFR RecommendedRFQ

74CBTLV3861QG

Renesas Electronics CorporationIn Stock: 380774CBTLV3861QG Datasheet

MFR RecommendedRFQ

CCBTLV3861IPWRG4Q1

Texas InstrumentsIn Stock: 1641CCBTLV3861IPWRG4Q1 Datasheet

MFR RecommendedRFQ

CCBTLV3861IPWRQ1

Texas InstrumentsIn Stock: 5620CCBTLV3861IPWRQ1 Datasheet

MFR RecommendedRFQ

SN74CBTLV3861PW

Texas InstrumentsIn Stock: 2062SN74CBTLV3861PW Datasheet

MFR RecommendedRFQ

SN74CBTLV3861PWR

Texas InstrumentsIn Stock: 79892SN74CBTLV3861PWR Datasheet

MFR RecommendedRFQ

SN74CBTLV3857PWR

Texas InstrumentsIn Stock: 1025SN74CBTLV3857PWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PI3B3861LEX is determined by the following critical parameters:

Primary Substitution Criteria:

• Circuit type and configuration (10 x 1:1 bus switch)
• Voltage supply range compatibility (minimum 3V support required)
• Operating temperature range (-40°C ~ 85°C)
• Surface mount packaging with 24-pin TSSOP or equivalent footprint
• RoHS3 compliance and MSL rating

Substitution Categories:

Direct Functional Equivalents (MFR Recommended): Parts meeting all primary criteria with identical or broader voltage supply ranges and matching package specifications. These include 74CBTLV3861PGG, 74CBTLV3861QG, CCBTLV3861IPWRG4Q1, CCBTLV3861IPWRQ1, SN74CBTLV3861PW, and SN74CBTLV3861PWR.

Parametric Equivalents: Parts with identical circuit configuration and operating parameters but with narrower voltage supply ranges (3V ~ 3.6V only) or discontinued status. SN74CBTLV3857PWR falls into this category.

Parameter Comparison

Engineering Selection Recommendations

For Active Supply Chain Applications: Select from the MFR Recommended category: 74CBTLV3861PGG (IDT), CCBTLV3861IPWRG4Q1 or CCBTLV3861IPWRQ1 (Texas Instruments automotive-qualified), SN74CBTLV3861PW or SN74CBTLV3861PWR (Texas Instruments standard grade), or 74CBTLV3861QG (Renesas). All maintain Active product status with full RoHS3 compliance.

For Automotive Applications: CCBTLV3861IPWRG4Q1 and CCBTLV3861IPWRQ1 are qualified to AEC-Q100 automotive standards and provide the required functional equivalence with automotive-grade certification.

For Packaging Flexibility: SN74CBTLV3861PWR offers the highest inventory availability (79,800 pcs) in Cut Tape and Digi-Reel packaging. 74CBTLV3861QG provides Tube packaging in 24-QSOP configuration, suitable for applications where package footprint variation is acceptable.

For Voltage Supply Compatibility: All MFR Recommended substitutes support extended voltage range (2.3V ~ 3.6V), providing broader operational flexibility compared to the PI3B3861LEX (3V ~ 3.6V).

Avoid: SN74CBTLV3857PWR is discontinued at DiGi Electronics and should not be selected for new designs requiring long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can I use 74CBTLV3861QG as a direct replacement for PI3B3861LEX? A: Functionally yes, but with a package consideration. The 74CBTLV3861QG uses 24-QSOP (0.154", 3.90mm width) versus the PI3B3861LEX 24-TSSOP (0.173", 4.40mm width). The footprints are not identical. Verify PCB layout compatibility before substitution.

Q: What is the voltage supply difference between PI3B3861LEX and the substitute parts? A: The PI3B3861LEX operates at 3V ~ 3.6V. Most MFR Recommended substitutes (74CBTLV3861PGG, CCBTLV3861 series, SN74CBTLV3861 series) support 2.3V ~ 3.6V, offering lower voltage operation capability. This is a compatible superset and does not restrict substitution.

Q: Are the automotive-qualified parts (CCBTLV3861IPWRG4Q1, CCBTLV3861IPWRQ1) suitable for non-automotive applications? A: Yes. Automotive-qualified components meet or exceed standard industrial specifications. They are fully compatible with non-automotive designs and provide additional reliability assurance through AEC-Q100 qualification.

Q: What is the difference between CCBTLV3861IPWRG4Q1 and CCBTLV3861IPWRQ1? A: Both are automotive-qualified (AEC-Q100) with identical electrical specifications. The primary difference is packaging: CCBTLV3861IPWRG4Q1 is supplied in Cut Tape (CT) format, while CCBTLV3861IPWRQ1 is supplied in Tape & Reel (TR) format. Select based on assembly process requirements.

Q: Why is SN74CBTLV3857PWR listed as a parametric equivalent rather than a direct substitute? A: SN74CBTLV3857PWR is discontinued at DiGi Electronics and has a narrower voltage supply range (3V ~ 3.6V) matching only the PI3B3861LEX. It does not offer the extended voltage capability of active MFR Recommended substitutes. New designs should not rely on this part.

Q: Can I mix different manufacturers' parts in the same design? A: Yes. All listed MFR Recommended substitutes are functionally equivalent with identical circuit configuration, operating temperature range, and RoHS3 compliance. Mixing manufacturers is acceptable provided PCB layout accommodates the specific package type selected.

Q: What inventory levels should I consider for production planning? A: SN74CBTLV3861PWR offers the highest availability (79,800 pcs). CCBTLV3861IPWRQ1 provides 5,562 pcs. Other options range from 1,454 to 3,700 pcs. Verify current inventory with your supplier for production volume requirements.