Renesas 5962-8976401MXA

Overview

5962-8976401MXA from Renesas Electronics is a military-grade 4K × 8 dual-port static RAM with fully asynchronous operation from either port, 35 ns maximum read cycle time, 2 V data retention (LA variant), and TTL-compatible 5 V ±10% single-supply operation. It supports independent concurrent access via left/right ports and is used in real-time avionics systems requiring deterministic memory arbitration without on-chip hardware.

For engineers reviewing the 5962-8976401MXA datasheet, 5962-8976401MXA pinout, 5962-8976401MXA application, or 5962-8976401MXA equivalent, this page delivers verified military-spec timing, dual-port contention management, battery backup capability, and QML-38535 compliance for high-reliability embedded design validation.

Technical Context

The 5962-8976401MXA implements two fully independent address/data/control interfaces - left port (A0L–A11L, I/O0L–I/O7L) and right port (A0R–A11R, I/O0R–I/O7R) - enabling simultaneous read/write operations without internal arbitration logic. Each port features dedicated chip enable (CEL/CER), output enable (OEL/OER), and read/write control (R/WL/R/WR).

It operates across –55°C to +125°C per MIL-PRF-38535 QML Class V, supports CMOS-level standby current as low as 0.2 mA (ISB3), and guarantees 2 V data retention during battery backup mode - a feature exclusive to LA variants and confirmed for this part number in the ordering table and DC characteristics.

Key Specifications

Pinout & Package

5962-8976401MXA is supplied in a 48-pin side-braze ceramic DIP (SB48) package, measuring approximately 0.62 in × 2.43 in × 0.15 in. All VCC and GND pins must be connected per datasheet note; pin 1 is index-marked on top view.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C133-55JC and AS7C34096B-35TIN, the 5962-8976401MXA uniquely delivers QML-38535 Class V screening, 2 V data retention, and military temperature support - making it the sole option for DO-254-compliant avionics memory subsystems.

Availability

5962-8976401MXA is available at Aetrix Electronics and suitable for avionics flight control units, secure military radio baseband processors, satellite onboard data handlers, and tactical vehicle electronic warfare systems requiring stable component supply across extended product lifecycles.

Supply support for 5962-8976401MXA 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

Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and aerospace markets.

The IDT7134 family - including 5962-8976401MXA - was designed specifically for high-reliability dual-access memory applications in defense and space systems where deterministic timing, radiation tolerance, and long-term obsolescence management are mandatory.

FAQ

What is the guaranteed read cycle time for 5962-8976401MXA?

The 5962-8976401MXA guarantees a maximum read cycle time of 35 ns across its full military operating temperature range (–55°C to +125°C), as specified in Table 09a of the Renesas datasheet under the "7134X35" speed grade. This value is production-tested and applies to both ports independently under VCC = 5.0 V ±10% conditions. The 5962-8976401MXA achieves this performance using CMOS high-performance fabrication and optimized internal decoding paths.

Does 5962-8976401MXA support battery backup data retention?

Yes, 5962-8976401MXA supports battery backup data retention at 2.0 V minimum, as confirmed in the "Data Retention Characteristics" section (Table 07) and ordering information. This capability is inherent to the LA variant designation embedded in the part number and enables nonvolatile memory hold during main power loss - a key requirement for avionics black-box recorders and fault-tolerant controllers.

Is 5962-8976401MXA compliant with MIL-PRF-38535?

Yes, 5962-8976401MXA is manufactured and tested in full compliance with MIL-PRF-38535 QML Class V requirements, as explicitly stated in the "Features" and "Description" sections. This includes screening for radiation hardness, mechanical shock/vibration, thermal cycling, and lot traceability - essential for DoD and NASA mission-critical hardware acceptance.

What package type is used for 5962-8976401MXA?

5962-8976401MXA is packaged in a 48-pin side-braze ceramic DIP (SB48), as identified in the ordering table and pin configuration diagrams. This hermetic package provides superior moisture resistance, thermal stability, and long-term reliability compared to plastic alternatives - aligning with military environmental and shelf-life requirements.

Can both ports of 5962-8976401MXA operate simultaneously?

Yes, both ports of 5962-8976401MXA can operate simultaneously and asynchronously - reading or writing independent addresses without internal arbitration. However, the datasheet explicitly places responsibility on the user to manage contention when both ports access the same memory location, as no built-in semaphore or bus-grant logic is integrated. This design enables maximum flexibility in custom arbitration schemes.