Renesas 71V321L35PF SRAM Equivalent & Substitute Parts

Part Overview

The Renesas 71V321L35PF is a 16Kbit dual-port asynchronous SRAM memory IC in 64-TQFP surface mount packaging. This device operates at 3V to 3.6V supply voltage with a 35 ns access time and write cycle time. The part is classified as obsolete, making identification of compatible alternatives essential for ongoing system support and new design implementations. Substitute parts must maintain identical memory capacity, organization, interface type, and physical packaging while meeting current compliance and availability 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	35 ns
Write Cycle Time	35 ns
Supply Voltage	3V to 3.6V
Operating Temperature	0°C to 70°C
Package Type	64-TQFP (14x14)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the 71V321L35PF must satisfy the following mandatory criteria:

Identical memory capacity: 16Kbit
Identical memory organization: 2K x 8
Identical technology: SRAM dual-port asynchronous
Identical interface: Parallel
Identical supply voltage range: 3V to 3.6V
Identical operating temperature range: 0°C to 70°C
Identical package: 64-TQFP (14x14)
Identical mounting type: Surface mount

The 71V321L25PFG meets all substitution criteria. This part shares the same base product number (71V321L), manufacturer (Renesas Electronics Corporation), and all core electrical and mechanical specifications. The primary difference is improved access time performance (25 ns versus 35 ns), which represents a direct upgrade path. The 71V321L25PFG is classified as active product status with current RoHS3 compliance, addressing the obsolescence of the original part.

Parameter Comparison

Parameter	71V321L35PF	71V321L25PFG
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Memory Size	16Kbit	16Kbit
Memory Organization	2K x 8	2K x 8
Memory Format	SRAM Dual Port, Asynchronous	SRAM Dual Port, Asynchronous
Memory Interface	Parallel	Parallel
Access Time	35 ns	25 ns
Write Cycle Time	35 ns	25 ns
Supply Voltage	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
Product Status	Obsolete	Active
RoHS Status	Non-compliant	RoHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

The 71V321L25PFG is the direct substitute for the obsolete 71V321L35PF. Selection is based on the following factors:

Functional equivalence: All memory specifications, electrical parameters, and physical packaging are identical
Product availability: The 71V321L25PFG maintains active product status with current inventory availability
Compliance improvement: The substitute achieves RoHS3 compliance, addressing regulatory requirements that the original part does not meet
Performance upgrade: The 25 ns access and write cycle times provide improved performance margins compared to the 35 ns specification of the original part
Thermal and voltage compatibility: Operating temperature and supply voltage ranges are identical, ensuring direct circuit compatibility

Frequently Asked Questions (FAQ)

Q: Can the 71V321L25PFG be used as a direct replacement for the 71V321L35PF?

A: Yes. The 71V321L25PFG is a direct substitute. All memory capacity, organization, interface, voltage, temperature, and package specifications are identical. The improved access time represents a performance upgrade with no compatibility concerns.

Q: What is the difference between the 35 ns and 25 ns access time specifications?

A: Access time defines the maximum delay from address input to valid data output. The 71V321L25PFG operates 10 ns faster than the 71V321L35PF. This faster timing is backward compatible with designs specified for 35 ns operation.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use identical 64-TQFP (14x14) surface mount packaging with the same pinout configuration.

Q: Why is the original part classified as obsolete?

A: The 71V321L35PF is no longer in active production. The 71V321L25PFG represents the current active product offering from Renesas Electronics Corporation for this memory capacity and configuration.

Q: Does the substitute part meet current regulatory compliance requirements?

A: Yes. The 71V321L25PFG is RoHS3 compliant, whereas the original 71V321L35PF is non-compliant. Both parts maintain identical MSL ratings and REACH unaffected status.

Q: Are there any supply voltage or operating temperature restrictions when substituting?

A: No. The supply voltage range (3V to 3.6V) and operating temperature range (0°C to 70°C) are identical for both parts.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message