Equivalent & Substitute Parts for 7203L30TDB

Part Overview

The 7203L30TDB is an asynchronous FIFO (First-In-First-Out) memory IC manufactured by Renesas Electronics Corporation. This device provides 18K bits of storage (2K x 9 organization) with a 30ns access time and operates at data rates up to 25MHz. The part is packaged in a 28-pin CDIP (Ceramic Dual In-line Package) for through-hole mounting applications.

The 7203L30TDB is classified as obsolete. Locating equivalent or substitute components is necessary for system redesign, board refresh, or when inventory becomes unavailable. Substitute parts must maintain functional compatibility while meeting current manufacturing and compliance standards.

Substiute Parts

7203L30TDB

Renesas Electronics CorporationIn Stock: 8657203L30TDB Datasheet

Current PartRFQ

7203L12JG

Renesas Electronics CorporationIn Stock: 10457203L12JG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 7203L30TDB is based on the following core electrical and mechanical parameters:

• Memory organization (2K x 9 bits)
• Asynchronous FIFO function
• Uni-directional bus architecture
• Supply voltage range (4.5V ~ 5.5V)
• Operating temperature range compatibility
• Pin-compatible or functionally equivalent packaging

The 7203L12JG qualifies as a substitute based on matching memory size, function, bus directionality, and voltage specifications. Performance improvements (faster access time and higher data rate) do not preclude substitution. However, package type differs (32-PLCC surface mount versus 28-CDIP through hole), requiring PCB redesign considerations.

Parameter Comparison

Engineering Selection Recommendations

The 7203L12JG is the manufacturer-recommended substitute for the 7203L30TDB. Selection of this substitute is justified on the following basis:

• Both devices share identical memory organization and asynchronous FIFO architecture
• The 7203L12JG is in active production status, ensuring long-term availability
• ROHS3 compliance of the 7203L12JG meets current environmental and regulatory requirements
• Electrical specifications (voltage supply, bus directionality) are fully compatible
• Performance characteristics of the 7203L12JG (12ns access time, 50MHz data rate) exceed the original part specifications, providing operational margin

Design considerations for substitution:

• Package change from 28-CDIP through-hole to 32-PLCC surface mount requires PCB layout modification
• Operating temperature range narrows from -55°C ~ 125°C to 0°C ~ 70°C; verify application temperature requirements
• Current supply requirement decreases from 150mA to 120mA, reducing power dissipation
• Moisture sensitivity level increases from MSL 1 to MSL 3, requiring appropriate handling during assembly

Frequently Asked Questions (FAQ)

Q: Can the 7203L12JG directly replace the 7203L30TDB without circuit modification?

A: Electrical substitution is possible due to matching voltage supply, memory organization, and bus architecture. However, package differences (28-CDIP versus 32-PLCC) require PCB redesign. Pin assignments must be verified against both datasheets before implementation.

Q: What is the impact of the narrower operating temperature range of the 7203L12JG?

A: The 7203L12JG operates from 0°C to 70°C, compared to the 7203L30TDB range of -55°C to 125°C. Applications requiring extended temperature operation below 0°C or above 70°C cannot use this substitute without additional thermal management or alternative component selection.

Q: Does the faster access time of the 7203L12JG affect system compatibility?

A: No. The 12ns access time of the 7203L12JG is faster than the 30ns specification of the original part. Systems designed for 30ns access time will operate correctly with the faster substitute, as timing margins increase.

Q: What are the implications of RoHS3 compliance?

A: The 7203L12JG meets ROHS3 standards, eliminating restricted substances (lead, cadmium, mercury, hexavalent chromium, PBBs, PBDEs). The original 7203L30TDB is RoHS non-compliant. For applications subject to environmental regulations or customer requirements, the 7203L12JG is the appropriate choice.

Q: How does the change in moisture sensitivity level affect handling?

A: The 7203L12JG has MSL 3 (168 hours), requiring controlled storage and handling conditions. The original part has MSL 1 (unlimited). Proper baking procedures and moisture-controlled environments are necessary before assembly of the substitute component.