Equivalent & Substitute Parts for Renesas 7201LA12JI Asynchronous FIFO

Part Overview

The Renesas 7201LA12JI is an asynchronous FIFO (First-In-First-Out) memory circuit with 512 x 9-bit storage capacity, designed for high-speed data buffering applications. This component features a 12-nanosecond access time and operates at 50MHz, making it suitable for real-time data management in digital systems. The 7201LA12JI is classified as an obsolete product, necessitating identification of functionally equivalent alternatives for new designs and ongoing system support.

Substiute Parts

7201LA12JI

Renesas Electronics CorporationIn Stock: 11367201LA12JI Datasheet

Current PartRFQ

7201LA12JG

Renesas Electronics CorporationIn Stock: 7547201LA12JG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7201LA12JI is determined by the following critical parameters:

Core Electrical Parameters: Memory size (512 x 9), access time (12ns), data rate (50MHz), and supply voltage range (4.5V - 5.5V) must remain constant or be superior.

Mechanical Compatibility: Package type must be 32-PLCC (14x11.46) with surface mount configuration to ensure PCB compatibility without redesign.

Functional Requirements: Asynchronous operation and retransmit capability must be maintained.

Bus Architecture: The main part specifies bi-directional bus operation. Substitute parts with uni-directional bus architecture represent a functional constraint that must be evaluated against application requirements.

The 7201LA12JG qualifies as a substitute based on matching electrical specifications, identical package configuration, and compatible functional characteristics, despite differences in bus directionality and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

For the 7201LA12JG as a substitute:

The 7201LA12JG maintains electrical and mechanical compatibility with the 7201LA12JI across all critical parameters: memory capacity, access time, data rate, supply voltage, current consumption, and package configuration. The substitute part carries Active product status, ensuring ongoing availability and manufacturing support compared to the obsolete 7201LA12JI.

Critical Considerations:

Bus directionality differs between the main part (bi-directional) and substitute (uni-directional). Applications requiring bi-directional data flow must evaluate whether uni-directional operation is compatible with system architecture.

Operating temperature range is narrower for the 7201LA12JG (0°C to 70°C) compared to the 7201LA12JI (-40°C to 85°C). Applications requiring extended temperature operation below 0°C or above 70°C cannot use the substitute without thermal management modifications.

The 7201LA12JG includes RoHS3 compliance and REACH unaffected status, providing regulatory alignment for modern manufacturing environments.

Frequently Asked Questions (FAQ)

Q: Can the 7201LA12JG directly replace the 7201LA12JI without PCB modifications?

A: The 7201LA12JG uses the identical 32-PLCC (14x11.46) package with surface mount configuration. Pin-to-pin compatibility exists for mechanical and electrical connections. However, bus directionality differences (bi-directional vs. uni-directional) require circuit-level evaluation to confirm functional compatibility.

Q: What is the primary reason for substitution?

A: The 7201LA12JI is classified as obsolete. The 7201LA12JG is an active product from the same manufacturer and series, ensuring continued availability, manufacturing support, and compliance with current regulatory standards.

Q: Are there electrical performance differences between these parts?

A: No. Both parts share identical specifications for memory size (512 x 9), access time (12ns), data rate (50MHz), supply voltage (4.5V - 5.5V), and maximum current (80mA).

Q: What is the impact of uni-directional vs. bi-directional bus architecture?

A: The 7201LA12JI supports bi-directional data flow, while the 7201LA12JG operates uni-directionally. Applications designed for bi-directional operation must be re-evaluated. Uni-directional operation may be acceptable if system data flow is inherently one-directional.

Q: Does the operating temperature difference affect substitution?

A: The 7201LA12JG operates from 0°C to 70°C, compared to the 7201LA12JI range of -40°C to 85°C. Applications requiring operation below 0°C or above 70°C cannot use the substitute without environmental controls or alternative solutions.

Q: What compliance certifications does the substitute part carry?

A: The 7201LA12JG is RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8542.32.0071. The moisture sensitivity level is rated at MSL 3 (168 hours).