Renesas 7204L25J Asynchronous FIFO - Equivalent & Substitute Parts

Part Overview

The Renesas 7204L25J is an asynchronous FIFO (First-In-First-Out) memory circuit with 36K capacity (4K x 9 bits) designed for uni-directional data buffering applications. Operating at 28.5MHz with a 25ns access time, this component is housed in a 32-PLCC surface mount package. The 7204L25J is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

7204L25J

Renesas Electronics CorporationIn Stock: 8517204L25J Datasheet

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7204L12JG

Renesas Electronics CorporationIn Stock: 14217204L12JG Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7204L25J is determined by the following critical parameters:

• Memory Architecture: Must maintain 36K (4K x 9) configuration for pin-compatible operation
• Function Type: Must be asynchronous FIFO to preserve timing and control signal compatibility
• Bus Configuration: Must be uni-directional to match existing circuit design
• Package Format: Must use 32-PLCC (14x11.46) surface mount to ensure PCB compatibility
• Voltage Supply Range: Must support 4.5V ~ 5.5V operation
• Operating Temperature: Must support 0°C ~ 70°C range

The 7204L12JG meets all substitution criteria while offering performance enhancements over the original part.

Parameter Comparison

Engineering Selection Recommendations

The 7204L12JG is a direct functional substitute for the 7204L25J. Both components share identical memory architecture, bus configuration, package format, and voltage specifications, ensuring pin-for-pin compatibility.

The 7204L12JG offers superior performance characteristics with a 50MHz data rate and 12ns access time compared to the 7204L25J's 28.5MHz and 25ns specifications. This performance improvement is backward-compatible with applications designed for the original part.

The 7204L12JG holds Active product status, ensuring continued availability and supply chain reliability. Additionally, the 7204L12JG meets ROHS3 compliance requirements, whereas the 7204L25J is RoHS non-compliant. For new designs or system upgrades, the 7204L12JG is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Is the 7204L12JG a direct replacement for the 7204L25J?

A: Yes. Both components are pin-compatible 32-PLCC packages with identical memory capacity (36K, 4K x 9), asynchronous function, uni-directional bus configuration, and 4.5V ~ 5.5V supply voltage. The 7204L12JG operates at higher performance levels without requiring circuit modifications.

Q: What are the performance differences between these parts?

A: The 7204L12JG operates at 50MHz with 12ns access time, compared to the 7204L25J's 28.5MHz and 25ns access time. The substitute part provides faster data throughput and reduced latency while maintaining full functional compatibility.

Q: Why is the 7204L25J listed as obsolete?

A: The 7204L25J has reached end-of-life status in Renesas's product portfolio. The 7204L12JG represents the current active equivalent within the 7200 series FIFO family.

Q: Are there packaging differences between these parts?

A: Both components use identical 32-PLCC (14x11.46) surface mount packaging. No PCB layout modifications are required for substitution.

Q: What compliance certifications apply to each part?

A: The 7204L25J is RoHS non-compliant. The 7204L12JG meets ROHS3 compliance standards. Both components are REACH Unaffected and classified under ECCN EAR99.

Q: Can the 7204L12JG be used in legacy systems designed for the 7204L25J?

A: Yes. The 7204L12JG's enhanced performance specifications are backward-compatible with applications originally designed for the 7204L25J. No circuit redesign is necessary.