Equivalent & Substitute Parts for 71V321SA25PF

Part Overview

The 71V321SA25PF is a 16Kbit dual-port asynchronous SRAM manufactured by Renesas Electronics Corporation in a 64-TQFP package. This memory IC operates at 3V to 3.6V supply voltage with 25 ns access and write cycle times, supporting 2K x 8 memory organization in parallel interface configuration. The part is classified as obsolete, necessitating identification of active equivalent components for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Memory Type	Volatile SRAM
Memory Format	Dual Port, Asynchronous
Memory Size	16Kbit
Memory Organization	2K x 8
Memory Interface	Parallel
Access Time	25 ns
Write Cycle Time	25 ns
Voltage Supply Range	3V to 3.6V
Operating Temperature	0°C to 70°C
Package Type	64-TQFP (14x14)
Mounting Type	Surface Mount
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the 71V321SA25PF is determined by strict equivalence across the following parameters:

Memory capacity and organization (16Kbit, 2K x 8)
Dual-port asynchronous SRAM technology
Parallel interface configuration
Access and write cycle timing (25 ns)
Supply voltage range (3V to 3.6V)
Operating temperature range (0°C to 70°C)
Package form factor (64-TQFP, 14x14 mm)
Surface mount mounting type
MSL rating (3, 168 Hours)

The 71V321L25PFG meets all electrical and mechanical parameters specified for the main part. This substitute is manufactured by the same supplier (Renesas Electronics Corporation) and maintains functional and physical compatibility.

Parameter Comparison

Parameter	71V321SA25PF (Main)	71V321L25PFG (Substitute)
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Memory Type	Volatile SRAM	Volatile SRAM
Memory Format	Dual Port, Asynchronous	Dual Port, Asynchronous
Memory Size	16Kbit	16Kbit
Memory Organization	2K x 8	2K x 8
Memory Interface	Parallel	Parallel
Access Time	25 ns	25 ns
Write Cycle Time	25 ns	25 ns
Voltage Supply	3V to 3.6V	3V to 3.6V
Operating Temperature	0°C to 70°C	0°C to 70°C
Package Type	64-TQFP (14x14)	64-TQFP (14x14)
Mounting Type	Surface Mount	Surface Mount
MSL Rating	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Active
RoHS Compliance	Non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The 71V321L25PFG is the direct functional equivalent for the obsolete 71V321SA25PF. Both parts share identical electrical specifications, memory architecture, and physical packaging. The substitute part offers the advantage of active product status, ensuring continued availability and supply chain reliability.

The 71V321L25PFG achieves ROHS3 compliance, whereas the original part is non-compliant. This distinction is significant for applications subject to regulatory requirements or customer specifications mandating RoHS compliance. The substitute part also carries REACH Unaffected status, providing additional environmental and regulatory documentation.

Both parts maintain equivalent MSL ratings and are suitable for identical PCB assembly processes and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can the 71V321L25PFG directly replace the 71V321SA25PF in existing designs?

A: Yes. The substitute part maintains identical electrical parameters, memory organization, access timing, supply voltage range, operating temperature range, and 64-TQFP package configuration. Pin-for-pin compatibility is assured.

Q: What is the primary reason for substitution?

A: The 71V321SA25PF is classified as obsolete. The 71V321L25PFG is an active product from the same manufacturer with equivalent specifications, ensuring long-term availability and supply continuity.

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

A: Yes. The 71V321L25PFG is ROHS3 compliant and REACH Unaffected, whereas the 71V321SA25PF is RoHS non-compliant. Applications requiring regulatory compliance should transition to the substitute part.

Q: Do the parts require different PCB assembly or storage procedures?

A: No. Both parts share identical MSL ratings (3, 168 Hours), mounting types (surface mount), and package specifications (64-TQFP, 14x14 mm). Assembly and storage procedures remain unchanged.

Q: What is the memory organization of these parts?

A: Both the main part and substitute are organized as 2K x 8, providing 16Kbit total capacity with parallel interface access.

Q: Are there secondary substitute options available?

A: The 71V321L25PFG serves as the primary active equivalent. Secondary substitutes (71V321L25TFG, 71V321L25TFGI) are available through the 71V321L base product line and maintain equivalent core specifications.

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