MAX3222CDWR Equivalent & Substitute Parts

Part Overview

The MAX3222CDWR is a 2/2 transceiver full RS232 interface IC in a 20-SOIC surface mount package manufactured by Texas Instruments. This component is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The MAX3222CDWR operates across a 3V to 5.5V supply range with a 250kbps data rate and 300mV receiver hysteresis, making it suitable for legacy RS232 communication applications requiring compact form factors.

Due to Last Time Buy status, identifying equivalent substitute parts ensures design continuity and supply chain reliability for ongoing production requirements or maintenance applications.

Substiute Parts

MAX3222CDWR

Texas InstrumentsIn Stock: 2970MAX3222CDWR Datasheet

Current PartRFQ

MAX3222ECDWR

Texas InstrumentsIn Stock: 1929MAX3222ECDWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX3222CDWR is determined by the following critical parameters:

• Protocol Compatibility: RS232 full duplex transceiver architecture
• Channel Configuration: 2 drivers and 2 receivers (2/2 configuration)
• Package Compatibility: 20-SOIC surface mount package with identical 0.295" (7.50mm) width
• Electrical Specifications: Supply voltage range 3V to 5.5V, operating temperature 0°C to 70°C
• Receiver Hysteresis: 300 mV threshold specification
• Compliance Standards: ROHS3 compliance and MSL 1 rating

The MAX3222ECDWR qualifies as a direct substitute based on matching all critical parameters within the allowed electrical and mechanical specifications for this product category.

Parameter Comparison

Engineering Selection Recommendations

The MAX3222ECDWR is the qualified substitute for the MAX3222CDWR based on electrical and mechanical parameter compatibility. Both parts maintain identical supply voltage ranges, operating temperature specifications, receiver hysteresis values, and package configurations. The MAX3222ECDWR carries Active product status, ensuring continued availability and supply chain support compared to the Last Time Buy status of the original part.

Both components meet ROHS3 compliance requirements and carry MSL 1 ratings, satisfying regulatory and environmental specifications for industrial and commercial applications. The MAX3222ECDWR is available in Tape & Reel packaging, suitable for high-volume production environments.

Frequently Asked Questions (FAQ)

Q: Can the MAX3222ECDWR directly replace the MAX3222CDWR in existing designs?

A: Yes. Both parts share identical electrical specifications for supply voltage (3V to 5.5V), operating temperature range (0°C to 70°C), receiver hysteresis (300 mV), and package configuration (20-SOIC). The 20-pin SOIC footprint and pin assignments are identical, enabling direct PCB-level substitution.

Q: What is the difference in data rate between these parts?

A: The MAX3222CDWR operates at 250kbps, while the MAX3222ECDWR supports 500kbps. The higher data rate of the substitute part does not create compatibility issues in applications requiring 250kbps operation, as the part operates within the same electrical and thermal specifications.

Q: Are there packaging differences between these parts?

A: The MAX3222CDWR is supplied in Cut Tape (CT) & Digi-Reel packaging, while the MAX3222ECDWR is supplied in Tape & Reel (TR) format. Both use identical 20-SOIC surface mount packages. Tape & Reel packaging is standard for automated assembly processes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the MAX3222CDWR and MAX3222ECDWR are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings. Both carry REACH Unaffected status and EAR99 export classification.

Q: Why is the original part marked as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments has discontinued production of the MAX3222CDWR. The MAX3222ECDWR, with Active product status, represents the current production equivalent and ensures long-term supply availability.