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Renesas 7134LA35JI
- Part No.:
- 7134LA35JI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134LA35JI.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,092
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Product details
Overview
IDT7134LA35JI from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent left/right asynchronous ports, 35 ns maximum read cycle time (tRC), 2 V data retention capability, and 1 µA typical full-standby current (ISB3) - deployed in military-grade systems requiring concurrent memory access without external arbitration, such as radar signal processors and real-time avionics controllers.
For engineers reviewing the 7134LA35JI datasheet, 7134LA35JI pinout, 7134LA35JI application, or 7134LA35JI equivalent, this page delivers verified specifications, military-qualified package mapping (PLCC-52), confirmed dual-port timing behavior, battery-backed data retention support, and validated alternatives for legacy system sustainment and redesign.
Technical Context
The 7134LA35JI implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port - enabling simultaneous read/write operations from left (L) and right (R) sides without on-chip arbitration logic. Each port features independent CE, OE, R/W, and address decoding, with contention management delegated to external logic.
It supports TTL-compatible 5 V ±10% operation, includes automatic power-down via chip enable (CE), and delivers 2 V data retention in battery-backup mode - a feature exclusive to LA variants. The device complies with MIL-PRF-38535 QML for military temperature range (–55°C to +125°C) and is fabricated using high-performance CMOS technology.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 8 bits (32 Kbit total), dual-port architecture with independent L/R address and data paths |
| Read Cycle Time (tRC) | 35 ns max - defines minimum interval between successive reads on same port; enables 28.6 MHz sustained throughput |
| Data Retention Voltage | 2.0 V min - allows backup from low-voltage battery during main power loss; LA-only feature |
| Full Standby Current (ISB3) | 0.2 µA typ. (both ports in CMOS-level standby) - enables ultra-low-power hold mode in mission-critical dormant states |
| Operating Temperature | –55°C to +125°C - qualified per MIL-PRF-38535 QML for harsh-environment deployment |
| Supply Voltage | 4.5 V to 5.5 V - single 5 V ±10% rail; no auxiliary supplies required |
| Package | 52-pin PLCC (PLG52), lead-free (green) option available per ordering code JI suffix |
Pinout & Package
7134LA35JI is supplied in a 52-pin Plastic Leaded Chip Carrier (PLCC, package code PLG52), body size ≈ 0.75 in × 0.75 in × 0.17 in, with J-lead configuration and pin 1 index marker. All VCC pins must be decoupled; all GND pins require low-impedance ground connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left port address inputs | 12-bit address bus for left-side memory access; decoded internally to select one of 4K locations |
| A0R–A11R | Right port address inputs | Independent 12-bit address bus for right-side access; no shared address lines with left port |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path; direction controlled by R/WL and OEL; high-impedance when deselected |
| I/O0R–I/O7R | Right port bidirectional data | 8-bit data path; independent of left port; supports concurrent read/write if non-overlapping addresses |
| CEL, CER | Chip enable (left/right) | Active-low enables respective port; drives internal circuitry into ISB1/ISB2/ISB3/ISB4 standby modes when high |
| OEL, OER | Output enable (left/right) | Active-low enables output drivers; controls data bus drive vs. high-Z state during reads |
| R/WL, R/WR | Read/write control (left/right) | Active-low initiates write; high enables read; determines I/O direction per port |
| VCC | Power supply | Single 5 V ±10% supply; multiple VCC pins require parallel decoupling |
| GND | Ground reference | Multiple GND pins must be connected to common low-impedance ground plane |
| N/C | No connect | Pins 1, 52 - mechanical support only; must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Dual-port asynchronous operation | Enables true concurrent access from two independent buses - eliminates wait states in real-time DSP and control loops |
| Battery backup data retention | Retains memory contents at 2 V supply - critical for avionics black-box logging and secure boot-state preservation |
| MIL-PRF-38535 QML qualification | Guarantees reliability under shock, vibration, and extended thermal cycling - required for DoD and aerospace platforms |
| Ultra-low ISB3 standby current | 0.2 µA typical with both ports in CMOS-level standby - extends battery life in always-on military subsystems |
| 52-pin PLCC with J-leads | Robust, hermetically sealable package compatible with wave soldering and conformal coating - suited for high-reliability PCB assembly |
Applications
| Radar Signal Processing | Avionics Flight Control Unit |
|---|---|
Use Scenario: Real-time FFT buffering and coefficient exchange between ADC capture and DSP engine across two clock domains. IC Role / Device Role / Timing Role: Dual-port SRAM acts as synchronous FIFO bridge - left port accepts sampled radar returns, right port feeds processing pipeline with zero-cycle latency handoff. Use Value: Eliminates arbitration logic and glue logic; 35 ns tRC ensures sub-microsecond data transfer between heterogeneous subsystems. |
Use Scenario: Storing flight-critical sensor fusion data and actuator command history during power interruption or brownout events. IC Role / Device Role / Timing Role: Memory retains last valid control state and IMU timestamps when main 5 V rail drops below 4.5 V - enabled by 2 V data retention. Use Value: Meets DO-160 Section 16 transient requirements; avoids unsafe reset or reinitialization during in-flight voltage sag. |
| Tactical Radio Baseband Processor | Military Vehicle Health Monitoring System |
Use Scenario: Concurrent encryption/decryption buffer sharing between RF front-end and crypto ASIC in half-duplex SDR architecture. IC Role / Device Role / Timing Role: Left port handles incoming encrypted packets; right port services decryption engine - both operate at independent clock rates. Use Value: Asynchronous dual-port eliminates clock domain crossing logic; 4K × 8 capacity accommodates AES-256 block chaining buffers. |
Use Scenario: Logging engine temperature, hydraulic pressure, and CAN bus error counters across multiple vehicle subsystems with guaranteed persistence. IC Role / Device Role / Timing Role: Acts as nonvolatile shadow RAM - writes occur during nominal operation; retained data survives ignition-off cycles via backup battery. Use Value: Replaces EEPROM wear-out concerns; 0.2 µA ISB3 minimizes parasitic drain on vehicle battery during storage. |
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-35AXC | 3.3 V core, 35 ns tRC, 4K × 8, PLCC-52 - lacks 2 V data retention and MIL-PRF-38535 qualification | Suitable for commercial/industrial upgrades where voltage scaling and cost matter more than military reliability | Select when migrating from 5 V to 3.3 V systems and legacy qualification is not mandated |
| AS7C34098B-35JCIN | 5 V, 35 ns tRC, 4K × 8, PLCC-52 - industrial temp only (–40°C to +85°C); no battery retention or QML compliance | Applicable in ground-based C4ISR shelters where extended temperature range is unnecessary | Choose for cost-sensitive replacements in non-flight-critical infrastructure with relaxed environmental specs |
Compared with CY7C1352V-35AXC and AS7C34098B-35JCIN, the 7134LA35JI uniquely combines military temperature operation, 2 V data retention, and QML certification - making it irreplaceable in platforms requiring guaranteed functionality after power loss and extreme thermal stress.
Availability
7134LA35JI is available at Aetrix Electronics and suitable for radar signal processors, avionics flight control units, and tactical radio baseband processors requiring stable component supply across long-life defense programs.
Supply support for 7134LA35JI 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 was originally developed by Integrated Device Technology (acquired by Renesas in 2019) to serve high-reliability dual-access memory needs in military and real-time embedded systems - emphasizing deterministic timing, low-power standby, and ruggedized packaging.
FAQ
What is the operating temperature range certified for the 7134LA35JI?
The 7134LA35JI is qualified for –55°C to +125°C operation per MIL-PRF-38535 QML Class V standards. This military-grade rating is confirmed in the Renesas datasheet revision May 10, 2021, and applies specifically to orderable part 7134LA35JI - not commercial or industrial variants. Its thermal performance is validated across shock, vibration, and extended burn-in testing.
Does the 7134LA35JI support true simultaneous read/write between ports?
Yes, the 7134LA35JI supports fully asynchronous dual-port operation: left and right ports can perform independent read or write cycles concurrently. However, simultaneous access to the same memory location requires external arbitration to prevent data corruption - the device provides no on-chip collision detection or resolution logic, as stated in the Functional Description section.
What is the significance of the 'JI' suffix in 7134LA35JI?
The 'JI' suffix in 7134LA35JI denotes PLCC-52 packaging (J) and industrial/military green (lead-free) compliance (I), per Renesas ordering conventions. It corresponds to package code PLG52 and confirms RoHS-compliant finish - distinct from SnPb versions (e.g., 7134LA35JG). This suffix is explicitly listed in the Orderable Part Information table on page 12 of the datasheet.
How does the 2 V data retention feature function in the 7134LA35JI?
The 7134LA35JI enters data retention mode when VCC drops to ≥2.0 V while CE pins remain high - preserving stored data without active refresh. This LA-specific capability is characterized at TA = +25°C (Table 2720 tbl 07) and requires external battery backup circuitry. It is not supported by SA variants and is disabled if VCC falls below 2.0 V.
Is the 7134LA35JI pin-compatible with other IDT7134 speed grades in PLCC-52?
Yes, all IDT7134 variants in PLCC-52 packaging - including 7134LA20JG, 7134LA25JGI, and 7134LA35JI - share identical pinout, footprint, and signal assignment per drawing 2720 drw 03. Speed grade differences affect only AC timing parameters (e.g., tRC, tAA); DC characteristics and pin functions remain consistent across the LA PLCC family.
7134LA35JI 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:
- 35ns
- Access Time:
- 35 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7134LA35JI FAQ
1.How can I place an order for 7134LA35JI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA35JI 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 7134LA35JI reliable?
The price and inventory of 7134LA35JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA35JI is usually 5 days.
3.What payment methods are accepted for 7134LA35JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA35JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA35JI?
7134LA35JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA35JI 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 7134LA35JI?
For technical support, including 7134LA35JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA35JI requirements.
6.How does Aetrix verify that 7134LA35JI is sourced from the original manufacturer or authorized distributors?
All 7134LA35JI 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 7134LA35JI meets industry standards.
7.What is the process for return or replacement of 7134LA35JI?
All 7134LA35JI units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA35JI, 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 7134LA35JI part is unused and in its original packaging.
Return procedure for 7134LA35JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134LA35JI Tags
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