Renesas 7204L12J Asynchronous FIFO Logic IC - Equivalent & Substitute Parts

Part Overview

The Renesas 7204L12J is an asynchronous FIFO (First-In-First-Out) memory IC with 36K capacity (4K x 9 bits) designed for high-speed data buffering applications. Operating at 50MHz with 12ns access time, this component is housed in a 32-PLCC surface mount package. The 7204L12J is classified as obsolete, making equivalent substitute parts necessary for ongoing system support, maintenance, and new design implementations where legacy compatibility is required.

Substiute Parts

7204L12J

Renesas Electronics CorporationIn Stock: 11567204L12J Datasheet

Current PartRFQ

7204L12JG

Renesas Electronics CorporationIn Stock: 14217204L12JG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 7204L12J has one direct equivalent substitute: the 7204L12JG. Substitution eligibility is determined by matching the following critical parameters:

• Memory capacity: 36K (4K x 9 bits)
• Function type: Asynchronous FIFO
• Data rate: 50MHz
• Access time: 12ns
• Supply voltage range: 4.5V ~ 5.5V
• Maximum supply current: 120mA
• Bus configuration: Uni-Directional
• Package: 32-PLCC (14x11.46mm)
• Operating temperature: 0°C ~ 70°C

The 7204L12JG maintains identical electrical and mechanical specifications, ensuring direct pin-for-pin and functional compatibility with the obsolete 7204L12J.

Parameter Comparison

Engineering Selection Recommendations

The 7204L12JG is the direct equivalent substitute for the obsolete 7204L12J. Both components share identical electrical performance and mechanical specifications, enabling seamless replacement in existing designs.

The 7204L12JG offers additional advantages for new implementations: it maintains active product status with Renesas, ensuring continued availability and supply chain reliability. The substitute achieves ROHS3 compliance, meeting modern environmental and regulatory requirements that the original part does not satisfy. This compliance status is significant for applications subject to RoHS directives or customer specifications requiring compliant components.

Moisture sensitivity differs between the two parts (MSL 1 versus MSL 3), reflecting manufacturing process updates. The 7204L12JG's MSL 3 rating (168 hours) remains suitable for standard PCB assembly processes and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can the 7204L12JG directly replace the 7204L12J in existing circuit boards?

A: Yes. The 7204L12JG is a direct pin-for-pin and functional equivalent. All electrical parameters, timing specifications, and package dimensions are identical, enabling direct substitution without circuit modifications.

Q: What is the significance of the product status difference (Obsolete vs. Active)?

A: The 7204L12J is obsolete and no longer manufactured by Renesas. The 7204L12JG is actively produced, ensuring reliable supply availability for replacement, repair, and new production requirements. Active status also indicates ongoing manufacturer support and quality assurance.

Q: Does the RoHS compliance difference affect compatibility?

A: No functional or electrical incompatibility exists. The 7204L12JG's ROHS3 compliance is a manufacturing and environmental attribute. For applications requiring RoHS-compliant components or subject to RoHS regulations, the 7204L12JG is the appropriate selection.

Q: Are there differences in handling or storage requirements?

A: The moisture sensitivity level (MSL) differs: 7204L12J is MSL 1 (unlimited shelf life), while 7204L12JG is MSL 3 (168-hour floor life after moisture exposure). Standard PCB assembly processes and controlled storage conditions accommodate MSL 3 requirements without special handling beyond industry-standard practices.

Q: What packaging options are available for the 7204L12JG?

A: The 7204L12JG is supplied in Tube packaging, compared to the 7204L12J's unspecified packaging. Both use the identical 32-PLCC (14x11.46mm) physical package for mounting and circuit board integration.