Renesas Electronics 7026L35J SRAM 256Kbit Parallel Memory - Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 7026L35J is a 256Kbit dual-port asynchronous SRAM memory IC in 84-PLCC surface mount packaging. This component features parallel memory interface with 35 ns access time and write cycle time, operating across 4.5V to 5.5V supply voltage range with 0°C to 70°C temperature specification. The 7026L35J is classified as obsolete product status, making identification of compatible substitute parts essential for system maintenance, legacy equipment repair, and design continuity.

Key Parameters

Parameter	Value
Memory Type	Volatile SRAM
Memory Format	Dual Port, Asynchronous
Memory Size	256Kbit
Memory Organization	16K x 16
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	84-PLCC (J-Lead)
Mounting Type	Surface Mount
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution compatibility for the 7026L35J is determined by the following critical parameters that must remain constant or improve:

Memory Type: Volatile SRAM (fixed requirement)
Memory Format: Dual Port, Asynchronous (fixed requirement)
Memory Size: 256Kbit (fixed requirement)
Memory Organization: 16K x 16 (fixed requirement)
Memory Interface: Parallel (fixed requirement)
Package Type: 84-PLCC (J-Lead) (fixed requirement)
Voltage Supply Range: 4.5V ~ 5.5V (fixed requirement)
Operating Temperature: 0°C ~ 70°C (fixed requirement)

Parameters that may vary in substitute parts include access time and write cycle time, provided the substitute meets or exceeds performance specifications. The 7026L15JG qualifies as a direct substitute based on identical memory architecture, packaging, voltage, and temperature specifications, with improved access and write cycle times of 15 ns.

Parameter Comparison

Parameter	7026L35J (Main Part)	7026L15JG (Substitute)
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Memory Type	Volatile SRAM	Volatile SRAM
Memory Format	Dual Port, Asynchronous	Dual Port, Asynchronous
Memory Size	256Kbit	256Kbit
Memory Organization	16K x 16	16K x 16
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	84-PLCC (J-Lead)	84-PLCC (J-Lead)
Mounting Type	Surface Mount	Surface Mount
MSL Rating	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The 7026L15JG is a direct functional substitute for the 7026L35J. Both components share identical memory architecture, capacity, organization, interface type, packaging, voltage specifications, and temperature operating range. The 7026L15JG offers performance improvement with 15 ns access and write cycle times compared to the 35 ns specification of the 7026L35J.

The 7026L35J is classified as obsolete, while the 7026L15JG maintains active product status with current manufacturing availability. The 7026L15JG achieves ROHS3 compliance, whereas the 7026L35J is RoHS non-compliant. Both components carry identical REACH unaffected status and EAR99 export classification.

For new designs or system upgrades, the 7026L15JG is the appropriate selection. For legacy equipment requiring exact performance matching, the 7026L15JG's faster timing characteristics remain compatible with systems designed for the 7026L35J specification.

Frequently Asked Questions (FAQ)

Q: Can the 7026L15JG directly replace the 7026L35J in existing circuit designs?

A: Yes. The 7026L15JG is a direct substitute. Both components feature identical memory capacity (256Kbit), organization (16K x 16), dual-port asynchronous architecture, parallel interface, 84-PLCC packaging, voltage range (4.5V ~ 5.5V), and operating temperature (0°C ~ 70°C). The 7026L15JG's faster access time (15 ns versus 35 ns) is compatible with designs specified for the 7026L35J.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility requires matching memory type (Volatile SRAM), memory format (Dual Port, Asynchronous), memory size (256Kbit), memory organization (16K x 16), memory interface (Parallel), package type (84-PLCC J-Lead), voltage supply range (4.5V ~ 5.5V), and operating temperature range (0°C ~ 70°C). Access time and write cycle time may improve in substitute parts.

Q: Why is the 7026L35J listed as obsolete?

A: The 7026L35J has reached end-of-life status in Renesas Electronics' product portfolio. The 7026L15JG represents the active equivalent offering improved performance specifications and current manufacturing support.

Q: Are there packaging or moisture sensitivity differences between these parts?

A: Both components use 84-PLCC (J-Lead) surface mount packaging with identical MSL rating of 3 (168 Hours). No packaging or moisture sensitivity differences exist between the 7026L35J and 7026L15JG.

Q: What is the RoHS compliance difference?

A: The 7026L35J is RoHS non-compliant, while the 7026L15JG is ROHS3 compliant. For applications requiring RoHS compliance, the 7026L15JG is the appropriate selection.

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