Renesas 7204L50J Asynchronous FIFO - Equivalent & Substitute Parts

Part Overview

The Renesas 7204L50J is an asynchronous FIFO memory IC with 36K capacity (4K x 9 bits) designed for uni-directional data buffering applications. Operating at 15MHz with 50ns access time, this component is packaged in a 32-PLCC surface mount configuration. The 7204L50J is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support. The primary substitute maintains identical memory architecture and pinout while offering improved performance specifications and active product status.

Substiute Parts

7204L50J

Renesas Electronics CorporationIn Stock: 11457204L50J 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 7204L50J is determined by the following critical parameters:

• Memory Architecture: Must maintain 36K capacity (4K x 9 bits) configuration
• Bus Configuration: Must support uni-directional data flow
• Package Compatibility: Must use 32-PLCC (14x11.46) surface mount package with identical pinout
• Voltage Specification: Must operate within 4.5V ~ 5.5V supply range
• Operating Temperature Range: Must support 0°C ~ 70°C minimum
• Expansion Capability: Must support depth and width expansion

The 7204L12JG qualifies as a direct substitute, maintaining all architectural and packaging requirements while offering enhanced performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The 7204L12JG is the qualified substitute for the 7204L50J based on the following engineering criteria:

Architectural Compatibility: Both parts maintain identical memory capacity (36K, 4K x 9), asynchronous function, uni-directional bus configuration, and 32-PLCC packaging. Pin-for-pin compatibility is assured.

Electrical Compatibility: Supply voltage range (4.5V ~ 5.5V), maximum supply current (120mA), and operating temperature range (0°C ~ 70°C) are identical, ensuring direct circuit integration without modification.

Performance Enhancement: The 7204L12JG provides superior performance with 50MHz data rate versus 15MHz and 12ns access time versus 50ns. These improvements are backward-compatible with designs specified for the 7204L50J.

Product Status and Compliance: The 7204L12JG holds active product status with ROHS3 compliance, addressing the obsolescence of the 7204L50J and meeting modern regulatory requirements. Both parts maintain REACH Unaffected status and EAR99 ECCN classification.

Frequently Asked Questions (FAQ)

Q: Can the 7204L12JG directly replace the 7204L50J in existing designs?

A: Yes. The 7204L12JG maintains identical memory architecture (36K, 4K x 9), pinout (32-PLCC), electrical specifications (4.5V ~ 5.5V supply, 120mA max current), and operating temperature range (0°C ~ 70°C). No circuit modifications are required.

Q: What are the performance differences between these parts?

A: The 7204L12JG operates at 50MHz data rate with 12ns access time, compared to the 7204L50J at 15MHz and 50ns. These enhanced specifications are fully backward-compatible with applications designed for the slower part.

Q: Why is the 7204L50J classified as obsolete?

A: The 7204L50J has reached end-of-life status. The 7204L12JG serves as the active replacement, offering improved performance and current regulatory compliance.

Q: Are there packaging differences between these parts?

A: Both parts use identical 32-PLCC (14x11.46) surface mount packaging. The 7204L12JG is supplied in tube packaging, while the 7204L50J was supplied in standard packaging. PCB footprint and assembly requirements are identical.

Q: What compliance certifications apply to the substitute part?

A: The 7204L12JG is ROHS3 compliant and REACH Unaffected. The 7204L50J is RoHS non-compliant. Both parts carry EAR99 ECCN classification and 8542.32.0071 HTSUS code.

Q: Are there any functional limitations when substituting the 7204L12JG?

A: No functional limitations exist. The 7204L12JG maintains all functional characteristics of the 7204L50J, including asynchronous operation, uni-directional bus configuration, depth and width expansion capability, and retransmit capability. The substitute provides equal or superior performance across all specified parameters.