AT83C24B-PRRUM Equivalent & Substitute Parts

Part Overview

The AT83C24B-PRRUM is a specialized interface IC manufactured by Microchip Technology, designed for 2-wire communication applications. This component is packaged in a 28-QFN (5x5) surface mount configuration with an exposed pad. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and production continuity.

Substiute Parts

AT83C24B-PRRUM

Microchip TechnologyIn Stock: 22653AT83C24B-PRRUM Datasheet

Current PartRFQ

MAX3798ETJ+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2128MAX3798ETJ+T Datasheet

MFR RecommendedRFQ

Z8523316ASG

ZilogIn Stock: 945Z8523316ASG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AT83C24B-PRRUM is determined by the following critical parameters:

• Interface Category: Specialized interface IC functionality
• Voltage Supply Range: 3V to 5.5V operating window
• Package Type: Surface mount QFN configuration with exposed pad
• Pin Count & Footprint: 28-pin QFN (5x5) form factor
• Compliance Requirements: ROHS3 compliance and EAR99 classification
• Moisture Sensitivity: MSL 3 rating for storage and handling

The identified substitute parts maintain compatibility within these core electrical and mechanical constraints, though package variations and pin counts may differ based on functional requirements.

Parameter Comparison

Engineering Selection Recommendations

MAX3798ETJ+T is classified as active product status, ensuring long-term availability and ongoing manufacturer support. This part maintains ROHS3 compliance and EAR99 classification consistent with the original AT83C24B-PRRUM. The lower moisture sensitivity level (MSL 1) provides superior storage stability compared to the original part. However, the voltage supply range (2.85V to 3.63V) is narrower than the original specification, requiring verification of system voltage requirements. The 32-pin QFN package represents a footprint increase from the 28-pin original.

Z8523316ASG maintains interface category classification and ROHS3 compliance. Product status is listed as Last Time Buy, indicating limited future availability. The 44-LQFP package represents a significant footprint change from the original 28-pin QFN, requiring PCB redesign. Voltage supply range (4.5V to 5.5V) is compatible with the upper operating window of the original part but does not support the 3V minimum specification.

Selection between these alternatives depends on system voltage requirements, PCB layout constraints, and production timeline considerations relative to product availability status.

Frequently Asked Questions (FAQ)

Q: Can MAX3798ETJ+T directly replace AT83C24B-PRRUM without PCB modification?

A: No. The MAX3798ETJ+T uses a 32-pin QFN package compared to the original 28-pin QFN, requiring PCB footprint redesign. Additionally, the voltage supply range differs, necessitating circuit verification.

Q: What is the primary difference between the two substitute parts?

A: MAX3798ETJ+T is active product status with superior moisture handling (MSL 1), while Z8523316ASG is Last Time Buy status with a larger 44-pin LQFP package. Voltage supply ranges also differ between the two options.

Q: Does Z8523316ASG support the full 3V to 5.5V voltage range of the original part?

A: No. Z8523316ASG operates at 4.5V to 5.5V, which covers only the upper portion of the original specification range. Systems requiring 3V operation cannot use this substitute without circuit modification.

Q: Are both substitute parts ROHS3 compliant?

A: Yes. Both MAX3798ETJ+T and Z8523316ASG maintain ROHS3 compliance and EAR99 classification consistent with the original AT83C24B-PRRUM.

Q: Which substitute part offers better long-term availability?

A: MAX3798ETJ+T is classified as active product status, providing ongoing manufacturer support and availability. Z8523316ASG is Last Time Buy, indicating limited future stock and no new production.