Renesas Electronics 7007L25G SRAM 256Kbit Parallel Memory - Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 7007L25G is a 256Kbit dual-port asynchronous SRAM memory IC with parallel interface, packaged in 68-PGA (29.46x29.46mm) through-hole configuration. This component operates at 25ns access time with 5V supply voltage and is designed for legacy embedded systems requiring volatile parallel memory storage.

The 7007L25G is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to support system maintenance, board redesigns, and production continuity where original inventory is depleted or unavailable.

Key Parameters

Parameter	Value
Memory Size	256Kbit
Memory Organization	32K x 8
Memory Type	Volatile SRAM
Technology	SRAM - Dual Port, Asynchronous
Memory Interface	Parallel
Access Time	25 ns
Write Cycle Time	25 ns
Voltage Supply Range	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package Type	68-BPGA Through Hole
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution eligibility for the 7007L25G is determined by the following critical parameters:

Memory capacity (256Kbit) and organization (32K x 8)
Dual-port asynchronous SRAM technology
Parallel memory interface
Supply voltage compatibility (4.5V ~ 5.5V)
Operating temperature range (0°C ~ 70°C)

The 7007L15JG qualifies as a direct substitute based on matching memory size, organization, technology, interface type, and voltage/temperature specifications. The substitute part maintains functional equivalence for memory access and control operations. Differences in access time (15ns vs 25ns) and packaging format represent performance enhancement and form-factor variation, respectively, and do not preclude substitution in applications designed for the original part.

Parameter Comparison

Parameter	7007L25G (Main Part)	7007L15JG (Substitute)
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Memory Size	256Kbit	256Kbit
Memory Organization	32K x 8	32K x 8
Memory Type	Volatile SRAM	Volatile SRAM
Technology	SRAM - Dual Port, Asynchronous	SRAM - Dual Port, Asynchronous
Memory Interface	Parallel	Parallel
Access Time	25 ns	15 ns
Write Cycle Time	25 ns	15 ns
Voltage Supply Range	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C
Mounting Type	Through Hole	Surface Mount
Package / Case	68-BPGA (29.46x29.46mm)	68-LCC J-Lead (24.21x24.21mm)
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	3 (168 Hours)

Engineering Selection Recommendations

The 7007L25G is obsolete; the 7007L15JG is the active equivalent from Renesas Electronics Corporation. Selection between these parts depends on system constraints:

7007L15JG is preferred when:

New production or long-term system support is required
ROHS3 compliance is mandated
Surface-mount assembly capability is available
Faster access time (15ns) meets or exceeds system timing requirements
PCB redesign for surface-mount footprint is feasible

7007L25G may be retained when:

Existing through-hole PCB assembly infrastructure is in place
Legacy system maintenance requires form-factor compatibility
Inventory of original parts remains available
RoHS compliance is not a contractual requirement

Both parts share identical memory capacity, organization, interface type, and voltage/temperature specifications, ensuring functional compatibility at the memory subsystem level.

Frequently Asked Questions (FAQ)

Q: Can the 7007L15JG directly replace the 7007L25G without circuit modification?

A: Functional memory operation is compatible. However, the 7007L15JG uses surface-mount 68-LCC packaging versus the 7007L25G through-hole 68-BPGA package. Direct PCB substitution requires either adapter solutions or PCB redesign. Electrical characteristics and memory interface timing are compatible.

Q: What is the significance of the 10ns access time difference between these parts?

A: The 7007L15JG provides faster access time (15ns) compared to the 7007L25G (25ns). This represents improved performance and does not create compatibility issues in systems designed for the slower 25ns part. Systems requiring 25ns or slower access times operate correctly with the 15ns substitute.

Q: Does the RoHS compliance difference affect substitution eligibility?

A: RoHS compliance status reflects manufacturing process and material composition. The 7007L15JG (ROHS3 compliant) is suitable for applications with RoHS requirements. The 7007L25G (non-compliant) is restricted to applications without RoHS mandates. This is a regulatory and procurement consideration, not a functional compatibility issue.

Q: What does MSL rating 3 (168 Hours) on the 7007L15JG mean for handling?

A: MSL 3 indicates moisture sensitivity level 3, requiring storage in controlled humidity environments and limiting floor-life to 168 hours after package opening. The 7007L25G (MSL 1) has unlimited floor-life. This affects component storage, handling procedures, and production scheduling but does not impact electrical performance.

Q: Are both parts suitable for the same voltage supply range?

A: Yes. Both the 7007L25G and 7007L15JG operate within 4.5V to 5.5V supply voltage range and 0°C to 70°C operating temperature range, ensuring electrical compatibility in systems designed for either part.

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