Renesas Electronics 7005L35J SRAM 64Kbit Parallel Memory - Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 7005L35J is a 64Kbit dual-port asynchronous SRAM memory IC in 68-PLCC surface mount packaging. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs. The part operates within the 4.5V to 5.5V supply voltage range with a 35 ns access time and write cycle time, suitable for parallel memory interface applications requiring volatile storage.

Key Parameters

Parameter	Value
Manufacturer Part Number	7005L35J
Manufacturer	Renesas Electronics Corporation
Memory Type	Volatile SRAM
Memory Format	Dual Port, Asynchronous
Memory Size	64Kbit
Memory Organization	8K x 8
Memory Interface	Parallel
Access Time	35 ns
Write Cycle Time	35 ns
Voltage Supply Range	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package Type	68-PLCC (24.21x24.21)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility for the 7005L35J is determined by the following critical parameters:

Memory Capacity & Organization: Must be 64Kbit with 8K x 8 organization
Memory Technology: Must be dual-port asynchronous SRAM
Memory Interface: Must be parallel interface
Package Type: Must be 68-PLCC (24.21x24.21) surface mount
Voltage Supply Range: Must support 4.5V ~ 5.5V operation
Operating Temperature Range: Must support 0°C ~ 70°C minimum
Access Time & Write Cycle Time: Must meet or exceed the performance of the original part (35 ns or faster)

The substitute part 7005L15JG meets all these criteria while offering improved performance characteristics and active product status with modern compliance certifications.

Parameter Comparison

Parameter	7005L35J (Main Part)	7005L15JG (Substitute)
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Memory Type	Volatile SRAM	Volatile SRAM
Memory Format	Dual Port, Asynchronous	Dual Port, Asynchronous
Memory Size	64Kbit	64Kbit
Memory Organization	8K x 8	8K x 8
Memory Interface	Parallel	Parallel
Access Time	35 ns	15 ns
Write Cycle Time	35 ns	15 ns
Voltage Supply Range	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C
Package Type	68-PLCC (24.21x24.21)	68-PLCC (24.21x24.21)
Mounting Type	Surface Mount	Surface Mount
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The 7005L15JG is the direct substitute for the 7005L35J based on the following engineering criteria:

Functional Compatibility: Both parts share identical memory capacity (64Kbit), organization (8K x 8), technology (dual-port asynchronous SRAM), interface type (parallel), package form factor (68-PLCC), and voltage/temperature operating ranges. The 7005L15JG provides superior access and write cycle times (15 ns versus 35 ns), making it a performance-compatible upgrade.

Product Status & Availability: The 7005L35J is obsolete, whereas the 7005L15JG maintains active product status with 1087 units in stock, ensuring long-term supply chain continuity.

Regulatory Compliance: The 7005L15JG is ROHS3 compliant, addressing modern environmental and regulatory requirements. Both parts maintain REACH Unaffected status and identical MSL ratings.

Pin-Compatible Replacement: Identical 68-PLCC packaging ensures direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the 7005L15JG directly replace the 7005L35J without PCB modifications?

A: Yes. Both parts use identical 68-PLCC (24.21x24.21) surface mount packaging with the same pin configuration, enabling direct substitution without PCB layout changes.

Q: What is the performance difference between these parts?

A: The 7005L15JG offers faster memory access and write cycle times (15 ns) compared to the 7005L35J (35 ns). This represents a 2.33x performance improvement while maintaining full functional compatibility.

Q: Are there any voltage or temperature compatibility concerns?

A: No. Both parts operate within identical voltage supply ranges (4.5V ~ 5.5V) and temperature ranges (0°C ~ 70°C), ensuring seamless electrical compatibility in existing circuit designs.

Q: Why is the 7005L35J classified as obsolete?

A: The 7005L35J has reached end-of-life status in Renesas Electronics' product portfolio. The 7005L15JG represents the current active equivalent with superior performance characteristics and modern compliance certifications.

Q: Does the 7005L15JG meet current environmental standards?

A: Yes. The 7005L15JG is ROHS3 compliant and maintains REACH Unaffected status, meeting current environmental and regulatory requirements for electronic components.

Q: Are the memory organization and interface specifications identical?

A: Yes. Both parts feature 64Kbit capacity with 8K x 8 organization and parallel memory interface, ensuring functional equivalence at the system level.

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