IS46DR16640C-3DBLA2 Equivalent & Substitute Parts

Part Overview

The IS46DR16640C-3DBLA2 is a 1Gbit DDR2 SDRAM memory IC manufactured by ISSI (Integrated Silicon Solution Inc.), configured as 64M x 16 with parallel interface architecture. This component operates at 333 MHz clock frequency with 450 ps access time, housed in an 84-TWBGA (8x12.5) surface mount package. The part maintains Active product status and is RoHS3 compliant with REACH unaffected classification. Substitute parts are identified to address inventory availability, packaging format requirements, or performance parameter variations while maintaining functional compatibility within DDR2 SDRAM specifications.

Substiute Parts

IS46DR16640C-3DBLA2

ISSI, Integrated Silicon Solution IncIn Stock: 10739IS46DR16640C-3DBLA2 Datasheet

Current PartRFQ

MT47H64M16NF-25E IT:M

Micron Technology Inc.In Stock: 26799MT47H64M16NF-25E IT:M Datasheet

MFR RecommendedRFQ

MT47H64M16NF-25E:M

Micron Technology Inc.In Stock: 26632MT47H64M16NF-25E:M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IS46DR16640C-3DBLA2 is determined by the following critical parameters:

Memory Capacity & Organization: All substitute parts must maintain 1Gbit total capacity with 64M x 16 organization to ensure address bus and data bus compatibility.

Technology & Interface: DDR2 SDRAM technology with parallel interface is mandatory. Memory type must remain volatile DRAM.

Electrical Specifications: Supply voltage range (1.7V ~ 1.9V) and write cycle time (15 ns) must be met or exceeded by substitute parts.

Package Compatibility: The 84-TFBGA package footprint (8x12.5mm) is the primary mechanical constraint. Substitute parts utilize 84-FBGA (8x12.5) configuration, which maintains identical footprint dimensions and pin count.

Compliance & Certifications: RoHS3 compliance and REACH unaffected status are required for regulatory alignment.

The identified substitute parts (MT47H64M16NF-25E IT:M and MT47H64M16NF-25E:M) satisfy these criteria with variations in clock frequency (400 MHz vs. 333 MHz), access time (400 ps vs. 450 ps), and operating temperature ranges, all of which represent equal or improved performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both MT47H64M16NF-25E variants are qualified substitutes for the IS46DR16640C-3DBLA2 based on maintained electrical specifications, identical memory organization, and equivalent package footprint. All three parts maintain Active product status with RoHS3 compliance and REACH unaffected classification.

MT47H64M16NF-25E IT:M (Bulk packaging) provides improved performance characteristics with 400 MHz clock frequency and 400 ps access time. Operating temperature range extends to -40°C ~ 95°C. This variant is suitable for applications where enhanced speed performance is acceptable and bulk packaging format is compatible with procurement workflows.

MT47H64M16NF-25E:M (Tray packaging) maintains identical performance specifications to the IT:M variant while offering tray packaging format matching the original part's packaging configuration. Operating temperature range is 0°C ~ 85°C. This variant is recommended for direct replacement scenarios where packaging format consistency is required.

Selection between substitute parts should be based on packaging format requirements and operating temperature range specifications of the target application.

Frequently Asked Questions (FAQ)

Q: Are the MT47H64M16NF-25E variants pin-compatible with the IS46DR16640C-3DBLA2?

A: Yes. Both substitute parts utilize the 84-TFBGA package with identical 8x12.5mm footprint and 84-pin configuration, ensuring mechanical and electrical pin compatibility.

Q: What is the difference between MT47H64M16NF-25E IT:M and MT47H64M16NF-25E:M?

A: The primary difference is packaging format. MT47H64M16NF-25E IT:M is supplied in Bulk packaging, while MT47H64M16NF-25E:M is supplied in Tray packaging. Both parts are electrically identical with 400 MHz clock frequency and 400 ps access time. Operating temperature ranges differ: IT:M supports -40°C ~ 95°C, while :M supports 0°C ~ 85°C.

Q: Can the substitute parts operate at the original part's 333 MHz specification?

A: Yes. The MT47H64M16NF-25E variants are rated for 400 MHz operation, which exceeds the 333 MHz requirement. DDR2 SDRAM devices operate at specified clock frequencies and lower frequencies within the same device family. Operation at 333 MHz is within the electrical capability of the substitute parts.

Q: Are there temperature range considerations when substituting?

A: The original IS46DR16640C-3DBLA2 operates from -40°C ~ 105°C. MT47H64M16NF-25E IT:M supports -40°C ~ 95°C, and MT47H64M16NF-25E:M supports 0°C ~ 85°C. Applications requiring the full -40°C ~ 105°C range should verify that the substitute part's temperature specification meets system requirements.

Q: Do all parts meet the same compliance standards?

A: Yes. The IS46DR16640C-3DBLA2 and both MT47H64M16NF-25E variants are RoHS3 compliant, REACH unaffected, and maintain MSL 3 (168 Hours) moisture sensitivity rating.