Equivalent & Substitute Parts for Renesas 7207L25PDG

Part Overview

The Renesas 7207L25PDG is an asynchronous FIFO memory IC with 288K capacity (32K x 9 bits) designed for high-speed data buffering applications. This device operates at 28.5MHz with a 25ns access time and is packaged in a 28-pin DIP configuration for through-hole mounting.

The 7207L25PDG carries an Obsolete product status. As this component is no longer in active production, identifying functionally equivalent substitute parts is essential for design continuity, system maintenance, and procurement planning. Substitute parts must maintain electrical compatibility while potentially offering improved performance characteristics or alternative packaging options.

Substiute Parts

7207L25PDG

Renesas Electronics CorporationIn Stock: 7807207L25PDG Datasheet

Current PartRFQ

7207LA15JG

Renesas Electronics CorporationIn Stock: 8997207LA15JG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 7207L25PDG are identified based on strict electrical and functional equivalence within the Renesas 7200 series FIFO family. The substitution criteria are:

Primary Equivalence Requirements (Non-Negotiable):

• Memory capacity: 288K (32K x 9 bits)
• Function: Asynchronous FIFO
• Bus architecture: Uni-Directional
• Supply voltage range: 4.5V ~ 5.5V
• Retransmit capability: Yes
• Series: Renesas 7200

Secondary Performance Parameters (Substitutes May Exceed):

• Data rate: Minimum 28.5MHz (higher rates acceptable)
• Access time: Maximum 25ns (faster access acceptable)
• Current supply: Maximum 120mA

Packaging Considerations:

• Mounting type may differ (through-hole to surface-mount conversion possible with appropriate adapter or PCB redesign)
• Pin count and physical dimensions may vary

The 7207LA15JG qualifies as a direct substitute based on these criteria, offering improved performance specifications while maintaining full electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The 7207LA15JG is electrically compatible with the 7207L25PDG for all functional and electrical parameters. The substitute part maintains identical memory capacity, FIFO architecture, supply voltage specifications, and operating temperature range. Performance specifications of the substitute exceed the original part requirements in both data rate (40MHz vs. 28.5MHz) and access time (15ns vs. 25ns), ensuring backward compatibility in timing-critical applications.

Product Status Advantage:

The 7207LA15JG carries an Active product status, ensuring continued availability, manufacturing support, and long-term supply chain reliability. This addresses the primary limitation of the obsolete 7207L25PDG.

Packaging Consideration:

The primary difference between these parts is the packaging format. The 7207L25PDG uses through-hole 28-DIP mounting, while the 7207LA15JG uses surface-mount 32-PLCC (J-Lead) packaging. Substitution requires PCB redesign or the use of appropriate adapter solutions. This is a mechanical integration consideration rather than an electrical compatibility issue.

Recommended Application:

For new designs or system upgrades, the 7207LA15JG is the preferred selection. For legacy system repairs requiring minimal PCB modification, evaluate adapter solutions or consider the through-hole mounting requirement as a design constraint.

Frequently Asked Questions (FAQ)

Q: Can the 7207LA15JG directly replace the 7207L25PDG without circuit modification?

A: Electrical substitution is complete. The 7207LA15JG maintains all functional and electrical specifications required by the 7207L25PDG. However, physical substitution requires PCB modification due to different package types (28-DIP through-hole vs. 32-PLCC surface-mount). Pin-to-pin correspondence must be verified during layout redesign.

Q: Why does the substitute part have a higher data rate and faster access time?

A: The 7207LA15JG represents a later generation within the Renesas 7200 series. Improved semiconductor manufacturing processes enable faster operation (40MHz vs. 28.5MHz) and reduced access time (15ns vs. 25ns). These enhancements maintain full backward compatibility; systems designed for the original specifications operate correctly with the faster substitute.

Q: Is the 7207LA15JG suitable for applications requiring the original 25ns access time specification?

A: Yes. The 7207LA15JG's 15ns access time exceeds the 25ns requirement, ensuring compatibility with timing-critical applications. Faster access time does not create incompatibility; it only improves performance margins.

Q: What is the pin count difference between these parts?

A: The 7207L25PDG uses 28 pins (28-DIP package), while the 7207LA15JG uses 32 pins (32-PLCC package). The additional pins in the PLCC package accommodate the surface-mount J-Lead configuration. Functional pin mapping must be verified during PCB redesign.

Q: Can I use a DIP-to-PLCC adapter for direct substitution?

A: Adapter solutions exist for through-hole to surface-mount conversion. However, adapter viability depends on PCB layout constraints, signal integrity requirements, and mechanical space availability. Consult adapter specifications and perform signal integrity analysis before implementation.

Q: Are there other substitute parts within the Renesas 7200 series?

A: Substitution eligibility is strictly limited to parts meeting all primary equivalence requirements: 288K (32K x 9) capacity, asynchronous FIFO function, uni-directional bus architecture, and 4.5V ~ 5.5V supply voltage. Only parts meeting these criteria are valid substitutes. The 7207LA15JG is the recommended substitute based on the provided parameters.

Q: What is the inventory status of the substitute part?

A: The 7207LA15JG has 844 pieces in new original stock, ensuring immediate availability. The 7207L25PDG has 750 pieces remaining in inventory but carries obsolete status, indicating no future production.