Renesas 5962-8687503XA

Overview

5962-8687503XA from Integrated Device Technology (IDT) is a military-grade 1K × 8 dual-port static RAM with on-chip arbitration logic, 25ns/35ns access time options, TTL-compatible 5V ±10% operation, and -55°C to +125°C operating range - used as MASTER in high-reliability avionics data buffering and real-time processor interconnect systems.

For engineers reviewing the 5962-8687503XA datasheet, 5962-8687503XA pinout, 5962-8687503XA application, or 5962-8687503XA equivalent, key selection criteria include BUSY-flag arbitration timing (tBAA ≤ 20ns), INTL/INTR port-to-port interrupt support, MIL-PRF-38535 QML qualification, and compatibility with IDT7140SLAVE for 16-bit expansion.

Technical Context

The 5962-8687503XA implements fully asynchronous dual-port architecture with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves simultaneous access contention via BUSYL/BUSYR open-drain flags and tAPS = 5ns priority setup timing.

It supports R/W-controlled and CE-controlled write cycles, features battery-backed data retention (2V, LA variant), and uses CMOS fabrication enabling 550mW typical active power and 1mW standby (LA) - all compliant with MIL-PRF-38535 Class V QML requirements.

Key Specifications

Pinout & Package

5962-8687503XA is packaged in a 48-pin ceramic flatpack (FP48) per MIL-PRF-38535, with 0.75″ × 0.75″ × 0.11″ body dimensions and side-brazed hermetic sealing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C130V-25JC and AS7C31025B-25JIN, the 5962-8687503XA delivers certified military reliability, integrated arbitration, and guaranteed -55°C startup - critical for embedded avionics where failure modes must be bounded and tested.

Availability

5962-8687503XA is available at Aetrix Electronics and suitable for avionics data buffering, radar signal processing, flight control interlock, and secure communication modules requiring stable component supply across long production lifecycles.

Supply support for 5962-8687503XA 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

Integrated Device Technology (IDT) was a fabless semiconductor company specializing in high-performance timing, memory interface, and RF solutions before its acquisition by Renesas Electronics in 2019.

The 5962-8687503XA belongs to IDT's military dual-port SRAM product line, engineered specifically for deterministic, fault-tolerant memory sharing in aerospace and defense systems demanding QML certification and extreme environmental resilience.

FAQ

What is the qualified temperature range for the 5962-8687503XA?

The 5962-8687503XA is qualified for operation from -55°C to +125°C ambient temperature per MIL-PRF-38535 Class V requirements. This range is verified through temperature cycling, steady-state burn-in, and parametric testing across extremes - ensuring reliable startup and functionality in jet engine bays and space-qualified payloads. The 5962-8687503XA maintains full AC/DC specifications throughout this range without derating.

Does the 5962-8687503XA require external pull-up resistors on BUSY pins?

Yes, the 5962-8687503XA's BUSYL and BUSYR pins are open-drain outputs and require external pull-up resistors to VCC (5V). Typical values range from 4.7kΩ to 10kΩ, selected to ensure rise time <10ns while limiting current to <16mA per pin. This configuration allows wired-OR connection of multiple 5962-8687503XA devices for system-level arbitration - a design feature explicitly documented in the functional block diagram and pin notes.

Can the 5962-8687503XA be used with the IDT7140 as a SLAVE device?

Yes, the 5962-8687503XA is functionally identical to the IDT7130SA/LA and is designed to operate as the MASTER in a MASTER/SLAVE pair with IDT7140-series SLAVE devices. It supports seamless 16-bit-or-wider word expansion using dedicated BUSY and interrupt signaling - confirmed by the "MASTER IDT7130 easily expands data bus width" feature statement and functional block diagram showing BUSY output / BUSY input pairing.

What is the data retention capability of the 5962-8687503XA?

The 5962-8687503XA is the SA (Standard Active) variant and does not support battery backup data retention. Only the LA (Low-power Active) variants (e.g., 5962-8687504XA) guarantee 2V data retention with ICCDR ≤ 4000µA (MIL grade). The SA version enters full standby (ISB3) below 0.2V input thresholds but loses data if VCC drops below 2.0V - a distinction clearly separated in Tables 07 and 06a/b of the datasheet.

How is port arbitration resolved when both ports attempt to write to the same address simultaneously?

When both ports attempt to write to the same address, the 5962-8687503XA uses on-chip arbitration logic that asserts BUSYL or BUSYR (whichever port met tAPS = 5ns priority setup first) to block the losing port's write. The winning port completes its write; the blocked port sees no data change and must retry. This behavior is defined in Truth Table III and timing diagrams drw 12–15 - and requires no external logic, distinguishing the 5962-8687503XA from single-port SRAMs requiring discrete arbitration ICs.