PCA9545ARGYRG4 Equivalent & Substitute Parts

Part Overview

The PCA9545ARGYRG4 is a translating switch interface IC manufactured by Texas Instruments, designed for I2C and SMBus applications. This specialized interface component operates across a supply voltage range of 2.3V to 5.5V and is housed in a 20-VQFN (4.6x4.5mm) package with exposed pad for surface mount applications.

The PCA9545ARGYRG4 has been discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Substiute Parts

PCA9545ARGYRG4

Texas InstrumentsIn Stock: 1006PCA9545ARGYRG4 Datasheet

Current PartRFQ

PCA9545ARGYR

Texas InstrumentsIn Stock: 2273PCA9545ARGYR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PCA9545ARGYRG4 is determined by strict equivalence across the following critical parameters:

• Base product number (PCA9545) ensures functional and pin compatibility
• Package specification (20-VQFN with 4.6x4.5mm dimensions and exposed pad) guarantees mechanical and thermal compatibility
• Interface protocols (I2C, SMBus) must remain identical
• Supply voltage range (2.3V ~ 5.5V) must be maintained or exceeded
• Mounting type (Surface Mount) must be consistent
• Compliance certifications (RoHS3, REACH Unaffected) must be equivalent or superior

The PCA9545ARGYR meets all substitution criteria as an active product variant of the same base product number with identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The PCA9545ARGYR is the direct substitute for the discontinued PCA9545ARGYRG4. Both parts share identical electrical specifications, package geometry, and compliance certifications. The primary distinction is product status: the PCA9545ARGYR maintains active availability, while the PCA9545ARGYRG4 has been discontinued.

Selection of the PCA9545ARGYR eliminates obsolescence risk and ensures continued component availability for production and field service applications. Both parts maintain equivalent RoHS3 compliance and REACH unaffected status, supporting regulatory requirements across manufacturing and deployment regions.

Frequently Asked Questions (FAQ)

Q: Are PCA9545ARGYRG4 and PCA9545ARGYR electrically identical?

A: Yes. Both parts operate at identical supply voltage ranges (2.3V ~ 5.5V), support the same I2C and SMBus interface protocols, and are manufactured by Texas Instruments under the same base product number (PCA9545).

Q: Can PCA9545ARGYR be used as a direct replacement in existing PCB designs?

A: Yes. The PCA9545ARGYR uses the identical 20-VQFN (4.6x4.5mm) package with exposed pad, ensuring pin-for-pin and footprint compatibility with the PCA9545ARGYRG4.

Q: What is the difference between the packaging designations?

A: The PCA9545ARGYRG4 was supplied in standard packaging, while the PCA9545ARGYR is available in Cut Tape (CT) and Digi-Reel® formats. Both use the same 20-VQFN (4.6x4.5mm) package specification.

Q: Are compliance certifications maintained with the substitute part?

A: Yes. The PCA9545ARGYR maintains ROHS3 compliance and REACH unaffected status identical to the PCA9545ARGYRG4, with equivalent Moisture Sensitivity Level (MSL) rating of 2 (1 Year).

Q: Why is the PCA9545ARGYRG4 discontinued?

A: Product discontinuation decisions are made by manufacturers based on market demand and product lifecycle management. The active PCA9545ARGYR variant provides equivalent functionality and specifications for ongoing applications.