Equivalent & Substitute Parts for 7204L30TDB

Part Overview

The 7204L30TDB is an asynchronous FIFO (First-In-First-Out) memory IC manufactured by Renesas Electronics Corporation. This device provides 36K bits of storage (4K x 9 organization) with a 30ns access time and operates at data rates up to 25MHz. The part is packaged in a 28-CDIP through-hole configuration and is designed for uni-directional data flow applications requiring depth and width expansion capabilities.

The 7204L30TDB is classified as obsolete. Identifying equivalent substitute parts is necessary to support legacy system maintenance, design updates, and procurement continuity where original components are no longer readily available or cost-effective.

Substiute Parts

7204L30TDB

Renesas Electronics CorporationIn Stock: 10037204L30TDB Datasheet

Current PartRFQ

7204L12JG

Renesas Electronics CorporationIn Stock: 14217204L12JG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 7204L30TDB is determined by the following core electrical and mechanical parameters:

Electrical Compatibility Requirements:

• Memory organization: 36K (4K x 9) bits
• Function: Asynchronous FIFO operation
• Voltage supply range: 4.5V ~ 5.5V
• Bus configuration: Uni-Directional
• Expansion capability: Depth and Width

Performance Considerations:

• Access time and data rate must meet or exceed the original specification (30ns access time, 25MHz data rate)
• Supply current must not exceed system power budget constraints

Mechanical Compatibility:

• Package type determines PCB layout and socket compatibility
• Mounting type (through-hole vs. surface mount) affects assembly process and board design

The 7204L12JG qualifies as a substitute based on matching electrical core parameters while offering improved performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

7204L12JG as Primary Substitute:

The 7204L12JG is the manufacturer-recommended substitute for the 7204L30TDB. Both devices share identical memory organization (36K, 4K x 9), asynchronous FIFO function, uni-directional bus configuration, and voltage supply range (4.5V ~ 5.5V).

The 7204L12JG provides superior electrical performance with 12ns access time and 50MHz data rate, exceeding the original 30ns/25MHz specification. Supply current is reduced to 120mA from 150mA, improving power efficiency.

Product Status and Compliance: The 7204L12JG holds active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. The original 7204L30TDB is obsolete and RoHS non-compliant.

Package and Mounting Considerations: The substitute uses 32-LCC (J-Lead) surface-mount packaging versus the original 28-CDIP through-hole package. This requires PCB redesign and assembly process modification. The operating temperature range of the substitute (0°C ~ 70°C) is narrower than the original (-55°C ~ 125°C), which may impact suitability for extended temperature applications.

Frequently Asked Questions (FAQ)

Q: Can the 7204L12JG directly replace the 7204L30TDB without circuit modifications?

A: Electrical substitution is valid based on matching memory organization, FIFO function, voltage supply, and uni-directional bus configuration. However, package and mounting type differ (28-CDIP through-hole vs. 32-LCC surface-mount), requiring PCB layout redesign and assembly process changes.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Memory size (36K, 4K x 9), FIFO function (asynchronous), voltage supply range (4.5V ~ 5.5V), and bus configuration (uni-directional) are the primary electrical criteria. Access time and data rate of the substitute must meet or exceed the original specification.

Q: Does the 7204L12JG meet the temperature range requirements of the original design?

A: The 7204L12JG operates from 0°C to 70°C, which is narrower than the original 7204L30TDB range of -55°C to 125°C. Applications requiring extended temperature operation must evaluate whether this limitation is acceptable for the intended use case.

Q: What is the impact of switching from through-hole to surface-mount packaging?

A: Through-hole to surface-mount conversion requires PCB redesign, different footprint layout, and modified assembly processes. Surface-mount packaging typically offers higher density and improved electrical performance but requires compatible manufacturing equipment.

Q: Is the 7204L12JG RoHS compliant?

A: Yes, the 7204L12JG is ROHS3 compliant. The original 7204L30TDB is RoHS non-compliant. This compliance difference may be relevant for applications subject to RoHS regulatory requirements.