PCA9518D,112 Equivalent & Substitute Parts

Part Overview

The PCA9518D,112 is a specialized interface buffer IC manufactured by NXP Semiconductors in a 20-SO package. This component functions as an I2C/SMBus buffer, designed for signal conditioning and level translation in interface applications. The product is classified as Obsolete, making identification of compatible substitute parts essential for ongoing system support and procurement planning.

Substiute Parts

PCA9518D,112

NXP SemiconductorsIn Stock: 4423PCA9518D,112 Datasheet

Current PartRFQ

PCA9518DW

Texas InstrumentsIn Stock: 1384PCA9518DW Datasheet

DirectRFQ

PCA9518DW

Texas InstrumentsIn Stock: 1384PCA9518DW Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PCA9518D,112 are identified based on the following critical parameters that determine functional and mechanical compatibility:

Electrical Compatibility Criteria:

• Interface protocol: I2C or SMBus support
• Voltage supply range: 3V ~ 3.6V operation
• Application function: Buffer interface capability

Mechanical Compatibility Criteria:

• Package type: 20-SOIC (0.295", 7.50mm Width)
• Mounting type: Surface Mount
• Pin count and footprint alignment

Compliance & Environmental Criteria:

• RoHS3 compliance
• Moisture Sensitivity Level 1
• REACH compliance status

The PCA9518DW from Texas Instruments meets all specified electrical, mechanical, and compliance parameters, establishing it as a direct substitute for the obsolete PCA9518D,112.

Parameter Comparison

Engineering Selection Recommendations

The PCA9518DW is the identified substitute for the obsolete PCA9518D,112. Both components share identical electrical specifications, package geometry, and compliance certifications. The PCA9518DW maintains ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original component.

The transition from PCA9518D,112 to PCA9518DW requires no circuit modifications due to matching voltage supply ranges (3V ~ 3.6V), identical 20-SOIC package dimensions, and equivalent buffer interface functionality. Both components support I2C protocol operation within the specified voltage envelope.

Frequently Asked Questions (FAQ)

Q: Can PCA9518DW directly replace PCA9518D,112 without PCB modifications?

A: Yes. Both components use the 20-SOIC (0.295", 7.50mm Width) package with identical pin assignments and footprints. No PCB layout changes are required.

Q: Are there voltage compatibility concerns when substituting PCA9518DW for PCA9518D,112?

A: No. Both components operate within the identical 3V ~ 3.6V supply range. Voltage compatibility is maintained across all specified operating conditions.

Q: What is the difference in interface protocol support between these parts?

A: The PCA9518D,112 supports both I2C and SMBus protocols. The PCA9518DW supports I2C. For applications requiring SMBus-specific functionality, protocol compatibility must be verified against system requirements.

Q: Are both components RoHS3 compliant?

A: Yes. Both PCA9518D,112 and PCA9518DW are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited) and REACH unaffected status.

Q: What is the product status difference between these components?

A: PCA9518D,112 is classified as Obsolete. PCA9518DW is classified as Last Time Buy. For new designs or long-term procurement, PCA9518DW availability should be confirmed with the supplier.