Renesas 7204L15JI Asynchronous FIFO - Equivalent & Substitute Parts

Part Overview

The Renesas 7204L15JI is an asynchronous FIFO memory IC with 36K capacity (4K x 9 bits) designed for uni-directional data buffering applications. Operating at 40MHz with a 15ns access time, this component is housed in a 32-PLCC surface mount package. The 7204L15JI is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

7204L15JI

Renesas Electronics CorporationIn Stock: 8147204L15JI Datasheet

Current PartRFQ

7204L12JG

Renesas Electronics CorporationIn Stock: 14217204L12JG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7204L15JI is determined by the following critical parameters:

• Memory capacity: 36K (4K x 9) configuration
• Function type: Asynchronous FIFO operation
• Bus architecture: Uni-directional data flow
• Package format: 32-PLCC (14x11.46mm) surface mount
• Supply voltage range: 4.5V ~ 5.5V compatibility
• Mounting technology: Surface mount compatibility

The 7204L12JG qualifies as a direct substitute based on matching memory capacity, asynchronous function, uni-directional bus architecture, identical package specification, and compatible supply voltage. Performance parameters (data rate and access time) represent improvements over the original part, making this substitute suitable for applications requiring equal or higher performance specifications.

Parameter Comparison

Engineering Selection Recommendations

The 7204L12JG is the manufacturer-recommended substitute for the obsolete 7204L15JI. Both parts share identical memory architecture, package specifications, and supply voltage requirements, ensuring direct functional compatibility at the circuit board level.

The 7204L12JG offers performance advantages with a 50MHz data rate (versus 40MHz) and 12ns access time (versus 15ns), making it suitable for applications requiring equal or higher speed operation. The substitute part maintains the same maximum supply current (120mA) and identical package footprint, eliminating the need for PCB redesign.

The 7204L12JG carries Active product status and ROHS3 compliance, providing long-term availability and regulatory alignment for new designs. The operating temperature range of the substitute (0°C ~ 70°C) is narrower than the original part (-40°C ~ 85°C), requiring verification for applications requiring extended temperature operation below 0°C or above 70°C.

Frequently Asked Questions (FAQ)

Q: Can the 7204L12JG directly replace the 7204L15JI without PCB modifications?

A: Yes. Both parts use identical 32-PLCC (14x11.46mm) surface mount packages with matching pin configurations. No PCB layout changes are required for physical substitution.

Q: What are the performance differences between these parts?

A: The 7204L12JG operates at 50MHz with 12ns access time, compared to the 7204L15JI at 40MHz with 15ns access time. The substitute provides faster data throughput and reduced latency, making it suitable for applications requiring equal or higher performance.

Q: Are there temperature range limitations with the substitute part?

A: The 7204L12JG operates from 0°C to 70°C, while the original 7204L15JI operates from -40°C to 85°C. Applications requiring operation below 0°C or above 70°C must evaluate alternative solutions or confirm system thermal management within the substitute's specified range.

Q: Does the substitute part require different supply voltage?

A: No. Both parts operate on identical 4.5V to 5.5V supply voltage, and both draw a maximum of 120mA supply current. Existing power supply designs require no modification.

Q: What is the significance of the RoHS compliance difference?

A: The 7204L15JI is RoHS non-compliant, while the 7204L12JG is ROHS3 compliant. For new designs or systems subject to RoHS regulations, the 7204L12JG provides regulatory alignment and environmental compliance.

Q: Is the 7204L12JG available in the same packaging format?

A: Yes. The 7204L12JG is supplied in 32-PLCC (14x11.46mm) surface mount package, identical to the original part. The substitute is available in Tube packaging format.