PI3CH281LE Equivalent & Substitute Parts

Part Overview

The PI3CH281LE is a Multiplexer/Demultiplexer IC with 1 x 4:1 circuit configuration, manufactured by Diodes Incorporated in a 16-TSSOP package. This component is classified as Obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates on single supply voltage (2.25V ~ 3.6V) and is suitable for surface mount applications across industrial and commercial temperature ranges (-40°C ~ 85°C).

Substiute Parts

PI3CH281LE

Diodes IncorporatedIn Stock: 1003PI3CH281LE Datasheet

Current PartRFQ

PI3CH281QE

Diodes IncorporatedIn Stock: 2077PI3CH281QE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PI3CH281LE is determined by the following critical parameters:

• Functional Equivalence: Identical circuit configuration (1 x 4:1 multiplexer/demultiplexer with 2 independent circuits)
• Electrical Compatibility: Matching voltage supply range (2.25V ~ 3.6V) and operating temperature range (-40°C ~ 85°C)
• Compliance Requirements: ROHS3 compliance and MSL rating of 1 (Unlimited)
• Manufacturer Continuity: Same manufacturer (Diodes Incorporated) to ensure design consistency and reliability

The PI3CH281QE meets all substitution criteria. While it differs in package type (16-QSOP vs. 16-TSSOP), both packages are surface mount configurations with compatible pinout and electrical specifications, allowing functional replacement with appropriate PCB layout adjustment.

Parameter Comparison

Engineering Selection Recommendations

The PI3CH281QE is the qualified substitute for the obsolete PI3CH281LE. Both parts share identical electrical specifications, functional configuration, and compliance certifications (ROHS3, REACH Unaffected, EAR99 classification). The PI3CH281QE maintains Active product status, ensuring long-term availability and supply chain reliability.

The primary design consideration is package transition from 16-TSSOP to 16-QSOP. Both are surface mount packages with compatible pinout; however, PCB layout modifications are required due to dimensional differences (4.40mm vs. 3.90mm width). The PI3CH281QE offers improved availability with 2048 units in stock compared to the PI3CH281LE's 916 units.

Frequently Asked Questions (FAQ)

Q: Can PI3CH281QE directly replace PI3CH281LE without PCB modification?

A: Electrical and functional replacement is direct. Physical PCB layout modification is required due to package footprint differences between 16-TSSOP and 16-QSOP configurations.

Q: Are the pinout assignments identical between these parts?

A: Both parts maintain the same functional pinout for the 1 x 4:1 multiplexer/demultiplexer circuit. Package-specific landing patterns differ and must be accommodated in PCB design.

Q: What is the impact of the product status change from Obsolete to Active?

A: The PI3CH281QE's Active status ensures continued manufacturing, improved long-term availability, and supply chain stability compared to the Obsolete PI3CH281LE.

Q: Are voltage supply and temperature specifications identical?

A: Yes. Both parts operate identically across the 2.25V ~ 3.6V supply range and -40°C ~ 85°C temperature range, ensuring functional compatibility in equivalent circuit applications.

Q: Do compliance certifications differ between these parts?

A: No. Both parts maintain identical ROHS3 compliance, MSL rating of 1 (Unlimited), REACH Unaffected status, and EAR99 ECCN classification.