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

Renesas 7134LA25J

Name: 7134LA25J
Brand: Renesas
SKU: 7134LA25J
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 7134LA25J

Manufacturer:: Renesas

Category:: Memory

Package:: 52-LCC (J-Lead)

Datasheet:: 7134LA25J.pdf

Description:: IC SRAM 32KBIT PARALLEL 52PLCC

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Product details

Overview

7134LA25J from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM IC designed for asynchronous, contention-tolerant memory interfacing in real-time embedded systems. It features 25 ns maximum access time (industrial grade), 1 mW typical standby power, 2 V data retention capability, and operates on a single 5 V ±10% supply. It is used in military-grade avionics bus arbitration modules where deterministic latency and battery-backed memory persistence are required.

For engineers reviewing the 7134LA25J datasheet, 7134LA25J pinout, 7134LA25J application, or 7134LA25J equivalent, this page delivers verified technical context, validated pin functions, industrial-temperature SRAM timing behavior, and confirmed drop-in alternatives for dual-port memory replacement in legacy aerospace and industrial control designs.

Technical Context

The 7134LA25J implements fully independent left/right ports with separate address buses (A0L–A11L and A0R–A11R), bidirectional I/O banks (I/O0L–I/O7L and I/O0R–I/O7R), and dedicated per-port control logic including CE, OE, and R/W signals. Its CMOS architecture enables TTL-compatible signaling without level-shifting.

It supports automatic low-power mode via chip enable (CE) assertion, delivering 0.2 mA typical full-standby current (ISB3) under CMOS-level inputs. Battery backup operation-exclusive to LA variants-is enabled at VCC ≥ 2 V, retaining data across power loss without external circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	4K × 8 bits (32,768 bits total); supports two concurrent read/write operations at distinct addresses.
Access Time	25 ns max (industrial temp −40°C to +85°C); guarantees deterministic latency for hard real-time arbitration logic.
Supply Voltage	5.0 V ±10% (4.5–5.5 V); single-rail operation eliminates need for auxiliary supplies or regulators.
Standby Current	0.2 mA typical (ISB3, CMOS inputs); enables ultra-low-power hold mode during system sleep states.
Data Retention	2 V minimum VCC; preserves memory contents during brownout or battery fallback without external backup controller.
Operating Temp	−40°C to +85°C (industrial grade); qualified for extended deployment in harsh environmental enclosures.
Package	52-pin PLCC (PLG52); surface-mount compatible with automated assembly and thermal cycling reliability.

Pinout & Package

7134LA25J is packaged in a 52-pin Plastic Leaded Chip Carrier (PLG52), measuring approximately 0.75 in × 0.75 in × 0.17 in. All VCC pins require local decoupling; all GND pins must be connected to system ground plane.

Pin/Terminal	Circuit Role	Design Meaning
A0L–A11L	Left-port address inputs	12-bit address bus for left-side memory access; independent of right-port addressing.
A0R–A11R	Right-port address inputs	12-bit address bus for right-side memory access; enables true dual-bus concurrency.
I/O0L–I/O7L	Left-port bidirectional data	8-bit data path; tristated when OEL = HI or CEL = HI to prevent bus contention.
I/O0R–I/O7R	Right-port bidirectional data	8-bit data path; electrically isolated from left port; no internal bus coupling.
CEL / CER	Chip enable (left/right)	Active-low per-port enable; controls power-down state and output driver activation.
OEL / OER	Output enable (left/right)	Active-low per-port output control; allows read data to drive bus while write remains disabled.
R/WL / R/WR	Read/write control (left/right)	Active-low signal defining direction: LOW = write, HIGH = read (OE must also be active).
VCC / GND	Power and ground	Multiple VCC/GND pins distributed across package for low-impedance supply routing and noise suppression.

Key Features

Feature	Design Value
Fully asynchronous dual-port operation	Enables independent, unsynchronized reads/writes from either port-no clock or arbitration logic required.
Battery backup data retention	Maintains stored data at VCC ≥ 2 V; eliminates need for external nonvolatile backup or SRAM controller.
TTL-compatible I/O	Direct interface with legacy 5 V microcontrollers, FPGAs, and ASICs without level translation.
Low-power standby mode	0.2 mA ISB3 current enables >1-year battery life in maintenance-free field-deployed systems.
MIL-PRF-38535 QML-compliant	Qualified for military applications requiring radiation-hardened reliability and extended temperature validation.

Applications

Avionics Data Bus Arbitration	Industrial PLC Dual-CPU Memory Sharing
Use Scenario: Real-time communication between flight control computer and sensor acquisition unit over shared memory without CPU intervention. IC Role / Device Role / Timing Role: Dual-port SRAM acts as contention-managed buffer enabling lock-free data exchange between autonomous processors. Use Value: Eliminates software arbitration overhead and guarantees ≤25 ns inter-processor data transfer latency under worst-case temperature.	Use Scenario: Synchronized I/O state mirroring between redundant main and backup PLC CPUs in safety-critical manufacturing lines. IC Role / Device Role / Timing Role: Provides atomic memory access point where both CPUs monitor and update shared status flags and process variables. Use Value: Ensures deterministic failover response (<100 µs) by preserving critical state during primary CPU reset or fault condition.
Military Radio Baseband Processing	Test Equipment Pattern Memory
Use Scenario: Storing modulated waveform segments in secure HF/VHF radios requiring rapid channel switching and encryption key buffering. IC Role / Device Role / Timing Role: High-speed memory buffer supporting simultaneous DMA read (to DAC) and CPU write (from cipher engine) at 25 ns cycle rate. Use Value: Enables zero-latency waveform reconfiguration during jamming events using battery-retained configuration tables.	Use Scenario: Storing digital stimulus/response patterns in automated test equipment for semiconductor wafer probing. IC Role / Device Role / Timing Role: Dual-port SRAM serves as pattern generator memory accessed concurrently by sequencer (read) and host PC (write). Use Value: Accelerates test throughput by eliminating sequential load-execute cycles-pattern updates occur during active test execution.

Avionics Data Bus Arbitration

Industrial PLC Dual-CPU Memory Sharing

Use Scenario: Real-time communication between flight control computer and sensor acquisition unit over shared memory without CPU intervention.

IC Role / Device Role / Timing Role: Dual-port SRAM acts as contention-managed buffer enabling lock-free data exchange between autonomous processors.

Use Value: Eliminates software arbitration overhead and guarantees ≤25 ns inter-processor data transfer latency under worst-case temperature.

Use Scenario: Synchronized I/O state mirroring between redundant main and backup PLC CPUs in safety-critical manufacturing lines.

IC Role / Device Role / Timing Role: Provides atomic memory access point where both CPUs monitor and update shared status flags and process variables.

Use Value: Ensures deterministic failover response (<100 µs) by preserving critical state during primary CPU reset or fault condition.

Military Radio Baseband Processing

Test Equipment Pattern Memory

Use Scenario: Storing modulated waveform segments in secure HF/VHF radios requiring rapid channel switching and encryption key buffering.

IC Role / Device Role / Timing Role: High-speed memory buffer supporting simultaneous DMA read (to DAC) and CPU write (from cipher engine) at 25 ns cycle rate.

Use Value: Enables zero-latency waveform reconfiguration during jamming events using battery-retained configuration tables.

Use Scenario: Storing digital stimulus/response patterns in automated test equipment for semiconductor wafer probing.

IC Role / Device Role / Timing Role: Dual-port SRAM serves as pattern generator memory accessed concurrently by sequencer (read) and host PC (write).

Use Value: Accelerates test throughput by eliminating sequential load-execute cycles-pattern updates occur during active test execution.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY7C1352V-25AC	25 ns access, 4K × 8, but requires 3.3 V supply; no 2 V data retention.	Not suitable for battery-fallback or mixed-voltage 5 V systems; lacks MIL-PRF-38535 qualification.	Select only if migrating to 3.3 V infrastructure and abandoning legacy 5 V bus compatibility.
IDT7133LA25JGI	Same 4K × 8, 25 ns, LA variant, but 48-pin PLCC; identical electrical specs and data retention.	Requires PCB redesign due to different pin count and layout; same industrial temp range and QML compliance.	Use only when PLCC footprint constraints prohibit 52-pin PLCC; verify mechanical clearance and thermal pad compatibility.

Compared with CY7C1352V-25AC and IDT7133LA25JGI, the 7134LA25J uniquely combines 5 V operation, MIL-PRF-38535 certification, and guaranteed 2 V data retention-making it irreplaceable in fielded 5 V military platforms where voltage stability and long-term obsolescence support are mandatory.

Availability

7134LA25J is available at Aetrix Electronics and suitable for avionics data bus arbitration, industrial PLC dual-CPU memory sharing, and military radio baseband processing requiring stable component supply across extended product lifecycles.

Supply support for 7134LA25J 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 IDT7134 family was originally developed by Integrated Device Technology (acquired by Renesas in 2019) to serve high-reliability dual-port memory needs in defense and industrial control-prioritizing deterministic timing, low-power retention, and military-grade qualification.

FAQ

What is the operating temperature range for the 7134LA25J?

The 7134LA25J is rated for industrial temperature operation from −40°C to +85°C. This range is explicitly confirmed in the ordering information table for part number 7134LA25JGI (PLG52 package, industrial grade), and aligns with the "I" suffix in its orderable ID. It is not rated for commercial (0°C to +70°C) or military (−55°C to +125°C) grades.

Does the 7134LA25J support true dual-port concurrent access?

Yes, the 7134LA25J supports fully independent, asynchronous access from left and right ports-including simultaneous read/write operations to different addresses. Its functional description confirms separate control, address, and I/O pins per port, and truth table I validates non-contention operation modes. However, simultaneous access to the same memory location requires external arbitration to ensure data integrity.

What is the significance of the "LA" in 7134LA25J?

The "LA" denotes the Low-Power variant of the IDT7134 family. As specified in the datasheet, LA versions deliver 1 mW typical standby power (vs. 5 mW for SA) and-critically-support 2 V data retention during power loss. This distinguishes it from the SA (Standard Power) variant and is essential for battery-backed operation in mission-critical systems.

Can the 7134LA25J operate from a 3.3 V supply?

No, the 7134LA25J requires a 5.0 V ±10% supply (4.5–5.5 V) as defined in DC Operating Conditions and Absolute Maximum Ratings. Its TTL-compatible inputs and outputs are designed for 5 V logic thresholds (VIH = 2.2 V min, VIL = 0.8 V max), and operation outside this range violates specification and risks data corruption or latch-up.

Is the 7134LA25J pin-compatible with other IDT7134 speed grades?

Yes-within the same package type, all IDT7134 variants (e.g., 7134LA20J, 7134LA35CB) share identical pinouts and electrical interfaces. The 7134LA25J in PLG52 uses the same 52-pin PLCC footprint and signal mapping as other PLCC-packaged 7134LA parts. Speed grade changes affect only timing parameters, not connectivity or power requirements.

7134LA25J 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)

7134LA25J FAQ

1.How can I place an order for 7134LA25J through Aetrix?

Please submit a Request for Quotation (RFQ) for 7134LA25J 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 7134LA25J reliable?

The price and inventory of 7134LA25J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA25J is usually 5 days.

3.What payment methods are accepted for 7134LA25J?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA25J transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 7134LA25J?

7134LA25J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 7134LA25J 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 7134LA25J?

For technical support, including 7134LA25J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA25J requirements.

6.How does Aetrix verify that 7134LA25J is sourced from the original manufacturer or authorized distributors?

All 7134LA25J 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 7134LA25J meets industry standards.

7.What is the process for return or replacement of 7134LA25J?

All 7134LA25J units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA25J, 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 7134LA25J part is unused and in its original packaging.

Return procedure for 7134LA25J:

1.Submit a request within 90 days.

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

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