Equivalent & Substitute Parts for 70V3379S4PRF

Part Overview

The 70V3379S4PRF is a dual-port synchronous SRAM memory IC manufactured by Renesas Electronics Corporation. This 576Kbit parallel memory device is organized as 32K x 18 with a 4.2 ns access time, housed in a 128-TQFP package. The part is currently classified as obsolete, which necessitates identification of active equivalent alternatives to maintain design continuity and ensure long-term component availability for production and maintenance applications.

Key Parameters

Parameter	Value
Memory Type	Volatile SRAM
Memory Format	Dual Port, Synchronous
Memory Size	576Kbit
Memory Organization	32K x 18
Memory Interface	Parallel
Access Time	4.2 ns
Voltage Supply Range	3.15V ~ 3.45V
Operating Temperature	0°C ~ 70°C
Package Type	128-TQFP (14x20)
Mounting Type	Surface Mount
Moisture Sensitivity Level	MSL 3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the 70V3379S4PRF is determined by strict equivalence across the following critical parameters:

Memory capacity and organization (576Kbit, 32K x 18 configuration)
Dual-port synchronous SRAM technology
Parallel interface architecture
Access time specification (4.2 ns)
Supply voltage range (3.15V ~ 3.45V)
Operating temperature range (0°C ~ 70°C)
Package and pinout compatibility (128-TQFP, 14x20 mm)
Moisture sensitivity classification (MSL 3)

The substitute part 70V3379S4PRFG meets all these criteria and maintains full electrical and mechanical compatibility with the original part number.

Parameter Comparison

Parameter	70V3379S4PRF (Main)	70V3379S4PRFG (Substitute)
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Memory Type	Volatile SRAM	Volatile SRAM
Memory Format	Dual Port, Synchronous	Dual Port, Synchronous
Memory Size	576Kbit	576Kbit
Memory Organization	32K x 18	32K x 18
Memory Interface	Parallel	Parallel
Access Time	4.2 ns	4.2 ns
Voltage Supply Range	3.15V ~ 3.45V	3.15V ~ 3.45V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C
Package Type	128-TQFP (14x20)	128-TQFP (14x20)
Mounting Type	Surface Mount	Surface Mount
Moisture Sensitivity Level	MSL 3 (168 Hours)	MSL 3 (168 Hours)
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The 70V3379S4PRFG is the direct equivalent substitute for the obsolete 70V3379S4PRF. Both parts are manufactured by Renesas Electronics Corporation and share identical electrical specifications and package configurations. The substitute part offers the advantage of active product status, ensuring continued availability and supply chain reliability.

The 70V3379S4PRFG provides improved regulatory compliance with ROHS3 certification, whereas the original part is RoHS non-compliant. Both parts maintain REACH unaffected status and identical ECCN and HTSUS classifications. For new designs or component replenishment, the 70V3379S4PRFG is the appropriate selection due to its active status and enhanced compliance profile.

Frequently Asked Questions (FAQ)

Q: Can the 70V3379S4PRFG be used as a direct replacement for the 70V3379S4PRF?

A: Yes. The 70V3379S4PRFG is a direct equivalent substitute. Both parts are identical in memory capacity, organization, access time, voltage specifications, operating temperature range, and package configuration. No circuit modifications are required.

Q: What is the primary reason for substitution?

A: The 70V3379S4PRF is classified as obsolete. The 70V3379S4PRFG is the active equivalent from the same manufacturer, ensuring continued component availability and supply chain continuity.

Q: Are there any differences in RoHS compliance between these parts?

A: Yes. The 70V3379S4PRF is RoHS non-compliant, while the 70V3379S4PRFG is ROHS3 compliant. This difference may be relevant for applications subject to RoHS regulatory requirements.

Q: Is the package footprint identical?

A: Yes. Both parts use the 128-TQFP package with 14x20 mm dimensions. PCB layout and footprint designs are fully compatible.

Q: Are the moisture sensitivity levels the same?

A: Yes. Both parts are classified as MSL 3 with a 168-hour moisture sensitivity window. Identical handling and storage protocols apply to both components.

Q: What is the supply voltage requirement?

A: Both parts require a supply voltage range of 3.15V to 3.45V. Operating outside this range is not supported.

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