Renesas 7007L25J

Overview

IDT7007L25J from IDT (Integrated Device Technology) is a high-speed 32K × 8 dual-port static RAM with true independent left/right ports, 25 ns maximum access time (industrial temperature range), TTL-compatible 5 V ±10% supply, and on-chip semaphore/interrupt arbitration logic - used in real-time inter-processor communication systems such as industrial PLCs and military avionics data buffers.

For engineers reviewing the IDT7007L25J datasheet, IDT7007L25J pinout, IDT7007L25J application, or IDT7007L25J equivalent, key selection criteria include BUSY-flag arbitration timing (tBDD ≤ 30 ns), dual-port power-down current (ISB3 ≤ 5 µA), master/slave configuration via M/S pin, and compatibility with 68-pin PLCC socketed designs requiring deterministic contention resolution.

Technical Context

The IDT7007L25J implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port - enabling simultaneous read/write to identical memory locations without external logic. Its on-chip arbitration uses push-pull BUSY outputs (not open-drain) and supports both address-match and CE-controlled busy assertion modes.

It integrates dedicated semaphore registers (8 flags, addressed by A0–A2) accessible via SEM = VIL, plus interrupt mailbox logic at fixed addresses 7FFE_H (INTL) and 7FFF_H (INTR), all operating under single 5 V supply with no level translation required.

Key Specifications

Pinout & Package

Package: 68-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 24.1 mm × 24.1 mm × 4.3 mm, lead pitch 1.27 mm, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-port SRAM applications.

Compared with IDT7007L25J, CY7C028V-25AC offers double data width but sacrifices PLCC compatibility and semaphore integration, while R1EX24032AS0C-25 reduces cost and complexity but eliminates critical hardware arbitration needed for deterministic real-time systems.

Availability

IDT7007L25J is available at Aetrix Electronics and suitable for industrial PLCs, military avionics, telecom line cards, medical imaging systems, and ruggedized embedded controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for IDT7007L25J includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

IDT (Integrated Device Technology) is a fabless semiconductor company specializing in high-performance timing, memory, and RF solutions, now part of Renesas Electronics since 2019.

The IDT7007L25J belongs to IDT's legacy dual-port SRAM product line, engineered specifically for deterministic inter-processor communication in real-time embedded systems where hardware arbitration, low-latency access, and industrial reliability are non-negotiable.

FAQ

What is the maximum operating temperature range for the IDT7007L25J?

The IDT7007L25J is rated for industrial temperature operation from –40°C to +85°C, making it suitable for deployment in harsh environments such as factory automation controllers, outdoor telecom infrastructure, and vehicle-mounted computing systems where ambient thermal stress exceeds commercial grade limits.

Does the IDT7007L25J support true simultaneous read operations on both ports?

Yes, the IDT7007L25J supports true simultaneous reads from both left and right ports to the same memory location without contention or timing penalty - a core feature of its dual-port SRAM cell architecture that eliminates the need for external arbitration logic in symmetric multiprocessing designs.

How does the BUSY arbitration logic function in master/slave configuration using the IDT7007L25J?

When M/S = HIGH, IDT7007L25J operates as Master: BUSYL and BUSYR become push-pull outputs asserting LOW during port contention to block writes. When M/S = LOW, it operates as Slave: BUSYL/BUSYR become inputs accepting external BUSY signals - enabling hierarchical arbitration across multiple IDT7007L25J devices in wide-data systems.

Can the IDT7007L25J be used in a 16-bit data path configuration?

Yes, the IDT7007L25J supports 16-bit expansion via Master/Slave cascading: one device configured as Master (M/S = HIGH) and another as Slave (M/S = LOW) allows interleaved addressing and automatic priority resolution - enabling full-speed 16-bit word access without external glue logic or performance penalty.

What is the standby current consumption of the IDT7007L25J in full power-down mode?

In full standby mode (ISB3), with both ports disabled using TTL-level inputs and SEM = VIH, the IDT7007L25J draws ≤5 µA - verified across the full –40°C to +85°C range - enabling energy-efficient operation in battery-backed or thermally constrained embedded applications where leakage must be minimized.