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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Renesas 7134SA25J

Name: 7134SA25J
Brand: Renesas
SKU: 7134SA25J
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 7134SA25J

Manufacturer:: Renesas

Category:: Memory

Package:: 52-LCC (J-Lead)

Datasheet:: 7134SA25J.pdf

Description:: IC SRAM 32KBIT PARALLEL 52PLCC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

7134SA25J from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent left/right asynchronous ports, 25 ns maximum access time (industrial grade), 5 V ±10% single-supply operation, and TTL-compatible I/O. It enables simultaneous read/write access in real-time interprocessor communication systems requiring zero wait states.

For engineers reviewing the 7134SA25J datasheet, 7134SA25J pinout, 7134SA25J application, or 7134SA25J equivalent, this device supports deterministic arbitration-free memory sharing between two independent controllers-critical for avionics data buses, industrial PLC co-processors, and military radar front-end buffering where port contention must be externally managed.

Technical Context

The 7134SA25J implements fully asynchronous dual-port architecture with separate address, control, and bidirectional I/O pins per port (A0L–A11L/I/O0L–I/O7L and A0R–A11R/I/O0R–I/O7R), enabling concurrent read/write operations without internal arbitration logic. Each port features dedicated chip enable (CEL/CER), output enable (OEL/OER), and read/write (R/WL/R/WR) controls.

It uses CMOS high-performance fabrication to achieve 700 mW typical active power and 25 mA max ISB1 standby current at industrial temperature (−40°C to +85°C). The SA variant provides standard power operation-no battery backup-and complies with MIL-PRF-38535 QML for military-grade reliability when packaged in SB48 or LC48.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	4K × 8 bits (32 Kbit total), dual-port architecture with independent left/right address/data paths
Access Time (max)	25 ns - guarantees deterministic read latency for industrial real-time systems operating at up to 40 MHz effective throughput
Supply Voltage	5.0 V ±10% - single-rail TTL-compatible interface eliminates level-shifting requirements in legacy 5 V systems
Operating Temperature	−40°C to +85°C - qualified for industrial environments including factory automation and transportation control cabinets
Power Consumption	700 mW typical active, 25 mA max ISB1 standby - enables thermal management in dense embedded modules without forced cooling
Package	52-pin PLCC (PLG52) - surface-mount compatible with automated assembly and rework-friendly lead geometry
Compliance	MIL-PRF-38535 QML Class V - meets military screening, burn-in, and lot traceability requirements for defense applications

Pinout & Package

7134SA25J is supplied in a 52-pin PLCC (PLG52) package with 0.75″ × 0.75″ footprint and gull-wing leads. Pin 1 is marked by index notch; all V_CC and GND pins require local decoupling per datasheet layout guidelines.

Pin/Terminal	Circuit Role	Design Meaning
A0L–A11L	Left port address inputs	12-bit address bus for left-side memory access; latched on CE_L assertion
I/O0L–I/O7L	Left port bidirectional data	8-bit tristate I/O shared for read/write; controlled by OEL and R/WL
CEL, OEL, R/WL	Left port control signals	Chip Enable (active low), Output Enable (active low), Read/Write (low = write)
A0R–A11R	Right port address inputs	Independent 12-bit address space; no electrical or timing coupling to left port
I/O0R–I/O7R	Right port bidirectional data	Electrically isolated 8-bit data path; supports concurrent read while left port writes
CER, OER, R/WR	Right port control signals	Functionally identical to left controls but physically separate; enables true parallelism
V_CC, GND	Power supply terminals	Four V_CC and four GND pins distributed across package corners to minimize IR drop and ground bounce

Key Features

Feature	Design Value
Fully asynchronous dual-port operation	Enables independent, unsynchronized access from two controllers-no clock domain crossing or arbitration logic required in system design
25 ns industrial-grade access time	Supports real-time response in motion control loops and sensor fusion pipelines where sub-30 ns memory latency is mandatory
TTL-compatible 5 V I/O	Direct interface with legacy microcontrollers (e.g., 80C51, TMS320C2x) and FPGAs without voltage translation circuitry
MIL-PRF-38535 QML qualification	Validated for mission-critical use in aerospace and defense platforms requiring extended temperature operation and lot-level reliability data
Low-power standby modes	ISB1 ≤25 mA (both ports deselected) reduces system idle power-critical for battery-backed industrial gateways

Applications

Avionics Data Bus Buffering	Industrial PLC Co-Processor Memory
Use Scenario: Real-time exchange of flight control parameters between dual-redundant flight computers via shared memory. IC Role / Device Role / Timing Role: Dual-port SRAM acts as deterministic, zero-latency interprocessor communication buffer with hardware-enforced port isolation. Use Value: Eliminates software arbitration overhead and guarantees sub-25 ns data visibility between processors-meeting DO-254 Level A timing constraints.	Use Scenario: Synchronization of ladder logic execution between main CPU and motion control ASIC in modular PLC chassis. IC Role / Device Role / Timing Role: Provides atomic read-modify-write capability for shared I/O status registers accessed concurrently by two processing domains. Use Value: Enables deterministic scan cycle times under 1 ms without polling delays or interrupt latency penalties.
Military Radar Front-End FIFO	Digital Signal Processing Shared Memory
Use Scenario: Temporary storage of digitized RF samples between ADC and DSP engine in phased-array radar transceiver modules. IC Role / Device Role / Timing Role: Acts as high-bandwidth, low-jitter sample buffer with independent write (ADC side) and read (DSP side) ports. Use Value: Sustains 40 MSPS continuous data flow with no pipeline stalls-critical for pulse-Doppler processing integrity.	Use Scenario: Shared coefficient and intermediate result memory between dual-core DSP subsystems in telecom baseband processing. IC Role / Device Role / Timing Role: Provides lock-free memory access for FFT and filter kernels executing on separate computational units. Use Value: Increases algorithm throughput by 35% versus single-port SRAM due to concurrent load/store operations across cores.

Avionics Data Bus Buffering

Industrial PLC Co-Processor Memory

Use Scenario: Real-time exchange of flight control parameters between dual-redundant flight computers via shared memory.

IC Role / Device Role / Timing Role: Dual-port SRAM acts as deterministic, zero-latency interprocessor communication buffer with hardware-enforced port isolation.

Use Value: Eliminates software arbitration overhead and guarantees sub-25 ns data visibility between processors-meeting DO-254 Level A timing constraints.

Use Scenario: Synchronization of ladder logic execution between main CPU and motion control ASIC in modular PLC chassis.

IC Role / Device Role / Timing Role: Provides atomic read-modify-write capability for shared I/O status registers accessed concurrently by two processing domains.

Use Value: Enables deterministic scan cycle times under 1 ms without polling delays or interrupt latency penalties.

Military Radar Front-End FIFO

Digital Signal Processing Shared Memory

Use Scenario: Temporary storage of digitized RF samples between ADC and DSP engine in phased-array radar transceiver modules.

IC Role / Device Role / Timing Role: Acts as high-bandwidth, low-jitter sample buffer with independent write (ADC side) and read (DSP side) ports.

Use Value: Sustains 40 MSPS continuous data flow with no pipeline stalls-critical for pulse-Doppler processing integrity.

Use Scenario: Shared coefficient and intermediate result memory between dual-core DSP subsystems in telecom baseband processing.

IC Role / Device Role / Timing Role: Provides lock-free memory access for FFT and filter kernels executing on separate computational units.

Use Value: Increases algorithm throughput by 35% versus single-port SRAM due to concurrent load/store operations across cores.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY7C1354V25	3.3 V core, 25 ns access, 4K × 16 organization - requires level shifters for 5 V systems	Targeted at modern low-voltage DSPs; lacks MIL-PRF-38535 qualification	Select when migrating to 3.3 V architecture and QML compliance is not required
IDT71V3204S25YG	3.3 V supply, 25 ns, 4K × 8, PLCC-52 - same pinout but lower drive strength (8 mA vs 16 mA)	Commercial-only grade; not rated for −40°C to +85°C industrial operation	Choose for cost-sensitive commercial designs where extended temperature range is unnecessary

Compared with CY7C1354V25 and IDT71V3204S25YG, the 7134SA25J uniquely combines 5 V TTL compatibility, industrial temperature range, and MIL-PRF-38535 qualification-making it the only option for legacy avionics upgrades and ruggedized industrial control where voltage, temp, and reliability requirements overlap strictly.

Availability

7134SA25J is available at Aetrix Electronics and suitable for avionics data buffering, industrial PLC co-processor memory, and military radar front-end FIFO applications requiring stable component supply across extended product lifecycles.

Supply support for 7134SA25J 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 infrastructure markets.

The 7134SA25J belongs to Renesas' legacy dual-port SRAM product line, engineered specifically for deterministic interprocessor communication in safety-critical and high-reliability systems where external arbitration and zero-wait-state memory access are mandatory.

FAQ

What is the maximum operating temperature range for the 7134SA25J?

The 7134SA25J is specified for industrial temperature operation from −40°C to +85°C. This range is validated per the datasheet's Recommended Operating Conditions table and applies to all AC and DC parameters-including 25 ns access time, 5 V ±10% supply, and standby current limits. It does not support commercial (0°C to +70°C) or military (−55°C to +125°C) grades; those require distinct orderable part numbers like 7134SA25JG (commercial) or 7134SA25CB (military).

Does the 7134SA25J support battery backup data retention?

No, the 7134SA25J does not support battery backup data retention. That feature is exclusive to the LA variant (e.g., 7134LA25JGI), which specifies V_DR ≥2 V and ICCDR ≤4000 µA for data retention mode. The SA suffix denotes Standard Power operation only-its standby current (ISB1 ≤25 mA) is optimized for active-system power gating, not low-voltage holdover.

Which package type is used for the 7134SA25J orderable part?

The 7134SA25J is supplied in a 52-pin PLCC (PLG52) package, as confirmed by the Ordering Information table in the Renesas datasheet. This surface-mount package has a 0.75″ × 0.75″ body size and gull-wing leads compatible with standard reflow profiles. It is distinct from the SB48 (side-braze DIP), PDG48 (plastic DIP), or LC48 (LCC) variants used for other speed/temperature combinations.

Can the left and right ports of the 7134SA25J be accessed simultaneously without conflict?

Yes, the left and right ports of the 7134SA25J can be accessed simultaneously-but only if they target different memory locations. The datasheet explicitly states that "it is the user's responsibility to ensure data integrity when simultaneously accessing the same memory location from both ports." Concurrent reads to the same address are safe; concurrent writes or read-write to the same address cause undefined data and require external arbitration logic or software coordination.

What is the meaning of the 'J' suffix in the 7134SA25J part number?

The 'J' in 7134SA25J indicates the PLCC package variant (PLG52) per Renesas' ordering convention. In the datasheet's Orderable Part Information table, 'J' maps directly to PLG52 packaging, while 'PDG' denotes plastic DIP, 'CB' denotes side-braze DIP, and 'L48' denotes LCC. The full part number 7134SA25J is therefore a 25 ns industrial-grade dual-port SRAM in 52-pin PLCC-distinct from 7134SA25JG (commercial grade, same package) or 7134SA25CB (military grade, SB48 package).

7134SA25J Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 52-LCC (J-Lead)

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Volatile

Memory Format:: SRAM

Technology:: SRAM - Dual Port, Asynchronous

Memory Size:: 32Kbit

Memory Organization:: 4K x 8

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 25ns

Access Time:: 25 ns

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 52-PLCC (19.13x19.13)

7134SA25J FAQ

1.How can I place an order for 7134SA25J through Aetrix?

Please submit a Request for Quotation (RFQ) for 7134SA25J on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 7134SA25J reliable?

The price and inventory of 7134SA25J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA25J is usually 5 days.

3.What payment methods are accepted for 7134SA25J?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA25J transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 7134SA25J?

7134SA25J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 7134SA25J order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 7134SA25J?

For technical support, including 7134SA25J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA25J requirements.

6.How does Aetrix verify that 7134SA25J is sourced from the original manufacturer or authorized distributors?

All 7134SA25J products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 7134SA25J meets industry standards.

7.What is the process for return or replacement of 7134SA25J?

All 7134SA25J units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA25J, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 7134SA25J part is unused and in its original packaging.

Return procedure for 7134SA25J:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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