PI5C34X245B Equivalent & Substitute Parts

Part Overview

The PI5C34X245B is an 8 x 1:1 bus switch logic IC manufactured by Diodes Incorporated in a 80-BQSOP surface mount package. This component functions as a multiplexer for digital signal routing with four independent circuits. The part is currently classified as obsolete, making identification of functional equivalents and active substitutes essential for ongoing system support and new design implementations.

Substiute Parts

PI5C34X245B

Diodes IncorporatedIn Stock: 1578PI5C34X245B Datasheet

Current PartRFQ

PI5C34X2245BE

Diodes IncorporatedIn Stock: 957PI5C34X2245BE Datasheet

Parametric EquivalentRFQ

SN74CBT34X245DBBR

Texas InstrumentsIn Stock: 3381SN74CBT34X245DBBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PI5C34X245B is determined by strict equivalence across the following critical parameters:

• Circuit configuration: 8 x 1:1 topology with 4 independent circuits
• Voltage supply range: 4.5V ~ 5.5V single supply operation
• Operating temperature range: -40°C ~ 85°C
• Mounting type: Surface mount
• Functional classification: Bus switch logic IC

Two substitute parts meet these criteria. The PI5C34X2245BE represents a parametric equivalent from the same manufacturer with identical electrical specifications but improved product status and RoHS compliance. The SN74CBT34X245DBBR is a manufacturer-recommended substitute from Texas Instruments that maintains functional and electrical equivalence while utilizing a different package variant (80-TSSOP vs. 80-BQSOP).

Parameter Comparison

Engineering Selection Recommendations

The PI5C34X245B is obsolete and no longer in active production. For new designs and ongoing system support, the PI5C34X2245BE is the direct parametric replacement, offering identical electrical performance with the advantage of active product status and ROHS3 compliance. This part maintains the same 80-BQSOP package footprint, enabling direct board-level substitution without layout modifications.

The SN74CBT34X245DBBR from Texas Instruments is the manufacturer-recommended alternative when package footprint changes are acceptable. This part utilizes the 80-TSSOP package (0.240" width versus 0.154" width), requiring PCB layout adjustment. The SN74CBT34X245DBBR offers superior inventory availability and maintains ROHS3 compliance with MSL 1 rating, providing advantages in supply chain stability and handling requirements.

Both substitutes maintain full electrical equivalence across voltage supply, operating temperature, and functional specifications. Selection between them depends on PCB layout constraints and supply chain requirements.

Frequently Asked Questions (FAQ)

Q: Can the PI5C34X2245BE replace the PI5C34X245B directly on existing PCBs?

A: Yes. The PI5C34X2245BE maintains identical package dimensions (80-BQSOP, 0.154" width) and pin configuration, enabling direct board-level substitution without layout modifications.

Q: What is the primary difference between the PI5C34X2245BE and SN74CBT34X245DBBR?

A: Both parts are electrically equivalent with identical circuit configuration and voltage specifications. The primary difference is package width: the PI5C34X2245BE uses 80-BQSOP (0.154" width), while the SN74CBT34X245DBBR uses 80-TSSOP (0.240" width). PCB layout changes are required when switching to the Texas Instruments part.

Q: Are there RoHS compliance differences between the substitutes?

A: The PI5C34X245B is RoHS non-compliant. Both substitutes (PI5C34X2245BE and SN74CBT34X245DBBR) are ROHS3 compliant, meeting current environmental regulations.

Q: What is the moisture sensitivity difference between these parts?

A: The PI5C34X245B and SN74CBT34X245DBBR have MSL 1 (unlimited shelf life). The PI5C34X2245BE has MSL 2 (1-year shelf life), requiring controlled storage conditions after opening.

Q: Which substitute offers better inventory availability?

A: The SN74CBT34X245DBBR has the highest inventory level at 3300 pieces, compared to 946 pieces for the PI5C34X2245BE and 1531 pieces for the obsolete PI5C34X245B.

Q: Can I use the SN74CBT34X245DBBR as a drop-in replacement?

A: The SN74CBT34X245DBBR is electrically equivalent but requires PCB layout modification due to package width differences (80-TSSOP versus 80-BQSOP). It is not a direct drop-in replacement without board redesign.