IDT71256SA12TP Equivalent & Substitute Parts

Part Overview

The IDT71256SA12TP is a 256Kbit asynchronous SRAM (Static Random Access Memory) IC with parallel interface, organized as 32K x 8 bits, featuring 12 ns access and write cycle times. Manufactured by Renesas Electronics Corporation, this component is classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance, legacy equipment repair, and design continuity.

The primary reason for sourcing substitute parts is the obsolete product status, which limits availability through standard distribution channels. Direct replacements with identical electrical and mechanical specifications ensure seamless integration into existing designs without circuit modification.

Substiute Parts

IDT71256SA12TP

Renesas Electronics CorporationIn Stock: 1485IDT71256SA12TP Datasheet

Current PartRFQ

71256SA12TPG

IDT, Integrated Device Technology IncIn Stock: 97271256SA12TPG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IDT71256SA12TP is determined by strict equivalence across the following critical parameters:

• Memory capacity: 256Kbit (32K x 8 organization)
• Memory technology: Asynchronous SRAM with parallel interface
• Access and write cycle timing: 12 ns maximum
• Supply voltage range: 4.5V ~ 5.5V
• Operating temperature range: 0°C ~ 70°C
• Physical package: 28-DIP through-hole configuration

The identified substitute part 71256SA12TPG meets all specified electrical and mechanical requirements, enabling direct functional replacement in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The 71256SA12TPG is the direct functional equivalent for the IDT71256SA12TP. Both components share identical electrical specifications, memory organization, timing characteristics, and physical packaging. The primary distinction is product status: the 71256SA12TPG maintains active manufacturing and distribution status, whereas the IDT71256SA12TP is obsolete.

Selection of the 71256SA12TPG provides continuity of supply for legacy system maintenance and repair applications. The active product status ensures availability through standard component distribution channels and reduces procurement lead times compared to obsolete inventory sources.

Frequently Asked Questions (FAQ)

Q: Can the 71256SA12TPG be used as a direct replacement for the IDT71256SA12TP?

A: Yes. Both components are electrically and mechanically identical across all specified parameters: 256Kbit capacity, 32K x 8 organization, 12 ns timing, 4.5V–5.5V supply voltage, 0°C–70°C operating range, and 28-DIP through-hole package. No circuit modifications are required.

Q: What is the significance of the product status difference?

A: The IDT71256SA12TP is classified as obsolete, indicating discontinued manufacturing. The 71256SA12TPG maintains active status, ensuring ongoing availability through authorized distributors and reducing procurement uncertainty for system repairs and maintenance.

Q: Are there any compliance or certification differences between these parts?

A: Both components share identical HTSUS classification (8542.32.0041). The 71256SA12TPG carries ECCN 3A991B2B, while the IDT71256SA12TP is classified as RoHS non-compliant. Compliance requirements should be evaluated based on application and regulatory jurisdiction.

Q: Is the 28-DIP package compatible with existing PCB designs?

A: Yes. Both components use the 28-DIP (0.300", 7.62mm) through-hole package, ensuring mechanical and electrical compatibility with existing printed circuit board layouts and socket configurations.

Q: What inventory considerations apply to these parts?

A: The IDT71256SA12TP has 1,416 pieces available as new original stock. The 71256SA12TPG has 911 pieces available as new original stock. Procurement strategy should account for current inventory levels and long-term supply requirements.