JS28F064M29EWTA Equivalent & Substitute Parts

Part Overview

The JS28F064M29EWTA is a 64Mbit parallel NOR Flash memory IC manufactured by Micron Technology Inc., packaged in a 56-TSOP surface mount configuration. This component operates across a supply voltage range of 2.7V to 3.6V with an access time of 70 ns and is designed for non-volatile memory applications requiring parallel interface connectivity.

The JS28F064M29EWTA has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this memory architecture.

Substiute Parts

JS28F064M29EWTA

Micron Technology Inc.In Stock: 1042JS28F064M29EWTA Datasheet

Current PartRFQ

MT28EW128ABA1HJS-0SIT

Micron Technology Inc.In Stock: 18088MT28EW128ABA1HJS-0SIT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the JS28F064M29EWTA is determined by the following critical parameters:

Package Compatibility: The substitute part must use the 56-TFSOP surface mount package with identical physical dimensions (0.724", 18.40mm Width) to ensure PCB footprint compatibility without redesign.

Memory Interface: The parallel interface architecture is mandatory for functional compatibility with existing system designs and signal routing.

Voltage Supply Range: The substitute must operate within the 2.7V to 3.6V supply voltage specification to integrate with existing power distribution networks.

Operating Temperature Range: The substitute must support the -40°C to 85°C operating temperature range to maintain performance across the intended application environment.

Memory Technology: FLASH - NOR technology is required to maintain non-volatile memory characteristics and command set compatibility.

Compliance Standards: RoHS3 compliance and MSL rating of 3 (168 Hours) are required to meet regulatory and manufacturing process requirements.

The MT28EW128ABA1HJS-0SIT qualifies as a substitute based on these parameters, despite featuring double the memory capacity (128Mbit versus 64Mbit). This increased capacity does not prevent substitution when system architecture supports higher memory density.

Parameter Comparison

Engineering Selection Recommendations

The MT28EW128ABA1HJS-0SIT is suitable as a substitute for the obsolete JS28F064M29EWTA based on the following engineering criteria:

Product Status: The substitute part maintains Active product status, ensuring ongoing availability and manufacturer support, whereas the main part is Obsolete.

Regulatory Compliance: Both parts maintain ROHS3 compliance and identical MSL ratings, satisfying manufacturing process and environmental requirements without modification to assembly procedures.

Physical Compatibility: Identical package specifications (56-TFSOP, 0.724", 18.40mm Width) and surface mount mounting type enable direct PCB footprint compatibility.

Electrical Compatibility: Matching voltage supply range (2.7V ~ 3.6V) and operating temperature range (-40°C ~ 85°C) ensure integration with existing power and thermal management systems.

Memory Architecture: Both parts employ parallel interface FLASH - NOR technology, maintaining command set and signal protocol compatibility at the system level.

The increased memory capacity (128Mbit versus 64Mbit) and slightly longer access time (95 ns versus 70 ns) do not prevent substitution when system design accommodates higher density memory and can tolerate the specified access time specification.

Frequently Asked Questions (FAQ)

Q: Can the MT28EW128ABA1HJS-0SIT be used as a direct replacement for the JS28F064M29EWTA without PCB modifications?

A: Yes. Both parts use the 56-TFSOP package with identical physical dimensions and surface mount configuration, enabling direct footprint compatibility without PCB redesign.

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

A: The MT28EW128ABA1HJS-0SIT provides double the memory capacity (128Mbit versus 64Mbit) and has a longer access time specification (95 ns versus 70 ns). Both parts maintain identical voltage supply, operating temperature range, and package specifications.

Q: Are there any compliance or certification differences between the main part and substitute?

A: No. Both parts maintain ROHS3 compliance, identical MSL ratings (3, 168 Hours), and equivalent regulatory certifications. No compliance modifications are required for substitution.

Q: Why is the JS28F064M29EWTA listed as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production and support for this part number. The MT28EW128ABA1HJS-0SIT, with Active product status, represents the current generation equivalent from the same manufacturer.

Q: Will the longer access time of the MT28EW128ABA1HJS-0SIT affect system performance?

A: Access time impact depends on system architecture and timing requirements. The substitute specifies 95 ns access time versus 70 ns for the main part. System-level timing analysis is required to determine if this specification change is acceptable for your application.

Q: Are both parts available in the same packaging options?

A: Both parts are supplied in 56-TSOP surface mount packaging. The main part inventory status is Obsolete, while the substitute maintains Active status with significantly higher inventory availability (18005 Pcs versus 976 Pcs).