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Renesas 7134LA35J8
- Part No.:
- 7134LA35J8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134LA35J8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,049
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Product details
Overview
7134LA35J8 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), 1 µA typical full-standby current (ISB3), and battery backup data retention down to 2 V - designed for real-time arbitration-free interprocessor communication in military avionics and radar subsystems.
For engineers reviewing the 7134LA35J8 datasheet, 7134LA35J8 pinout, 7134LA35J8 application, or 7134LA35J8 equivalent, this page delivers verified timing specs, validated PLCC-52 pin mapping, confirmed military-grade (-55°C to +125°C) operation, and precise power-down behavior under dual-port contention scenarios.
Technical Context
The 7134LA35J8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port - enabling simultaneous read/write access without on-chip arbitration logic. It supports external contention management via CE, OE, and R/W signals on both ports, with no internal wait-state insertion.
Its low-power LA variant features CMOS-based standby modes: ISB3 (full standby, ≤1 µA at 5 V) and data retention mode (≤4 mA at 2 V), validated across MIL-PRF-38535 QML-compliant temperature range. All timing parameters - including tAA (35 ns), tAOE (20 ns), and tPD (35 ns) - are specified for military grade operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 bits (32 Kbit); supports independent 8-bit parallel access on left and right ports |
| Read Cycle Time (tRC) | 35 ns max - defines minimum interval between successive reads on same port |
| Address Access Time (tAA) | 35 ns max - determines earliest valid data output after stable address assertion |
| Full Standby Current (ISB3) | 1.0 µA typical at 5 V - enables ultra-low-power sleep when both CE inputs > VCC − 0.2 V |
| Data Retention Voltage | 2.0 V min - guarantees nonvolatile memory state during brownout or battery backup |
| Operating Temperature | −55°C to +125°C - qualified per MIL-PRF-38535 QML Class V for mission-critical systems |
| Supply Voltage | 4.5 V to 5.5 V - TTL-compatible single 5 V ±10% rail; no auxiliary supplies required |
Pinout & Package
7134LA35J8 is supplied in a 52-pin plastic leaded chip carrier (PLCC) package (PLG52), body size 0.75 in × 0.75 in × 0.17 in, with J-lead configuration and pin 1 index notch at top-left corner when viewed from top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left-port address inputs | 12-bit address bus for left-side memory access; latched on CEL low transition |
| A0R–A11R | Right-port address inputs | 12-bit address bus for right-side memory access; independent of left-port addressing |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit tri-state I/O bus; driven only when CEL = L and OEL = L (read) or R/WL = L (write) |
| I/O0R–I/O7R | Right-port bidirectional data | 8-bit tri-state I/O bus; enabled by CER/OER/R/WR signals independently from left port |
| CEL, CER | Chip enable (left/right) | Active-low enables respective port; drives internal circuitry into ISB1/ISB2/ISB3/ISB4 standby states when high |
| OEL, OER | Output enable (left/right) | Active-low controls output drivers; high-Z when deasserted, allowing bus sharing |
| R/WL, R/WR | Read/write control (left/right) | Active-low selects write mode; high enables read; must be stable during address transitions |
| VCC, GND | Power and ground | Single 5 V supply; all VCC pins must be decoupled locally; all GND pins tied to common ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Dual-port arbitration-free operation | Enables deterministic interprocessor communication without hardware semaphore logic or software polling overhead |
| Battery-backed data retention | Maintains stored contents at 2 V supply - critical for warm-start recovery in radar pulse processing modules |
| Ultra-low ISB3 standby current | 1.0 µA typical allows continuous memory preservation during extended system sleep without battery drain |
| MIL-PRF-38535 QML qualification | Guarantees reliability, screening, and traceability for aerospace and defense deployments requiring Class V conformance |
| Asynchronous port independence | Left and right ports operate at different clock domains or even DC-coupled logic families without synchronization latency |
Applications
| Avionics Flight Control Interface | Tactical Radar Signal Buffering |
|---|---|
|
Use Scenario: Real-time exchange of attitude and control surface commands between redundant flight computers. IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared memory buffer with left port connected to primary CPU and right port to backup CPU - enabling lock-step verification and failover without bus contention. Use Value: 35 ns tRC ensures sub-microsecond command handoff; ISB3 <1 µA extends battery life during inertial navigation hold mode. |
Use Scenario: Storing digitized IF samples between ADC capture and DSP-based pulse compression in airborne SAR systems. IC Role / Device Role / Timing Role: Left port accepts streaming ADC data at 40 MSPS; right port feeds compressed results to FPGA DMA engine - decoupling acquisition and processing pipelines. Use Value: Asynchronous dual access eliminates FIFO depth constraints; 2 V data retention preserves last valid frame during power interruption. |
| Military Secure Radio Baseband | Electronic Warfare Jamming Controller |
|
Use Scenario: Key scheduling and cipher block exchange between encryption ASIC and host processor in Type 1 crypto module. IC Role / Device Role / Timing Role: Acts as secure shared memory with physical port isolation - preventing side-channel leakage between cryptographic and control domains. Use Value: MIL-qualified operation ensures integrity under shock/vibration; tAOE = 20 ns enables rapid key loading during channel hopping. |
Use Scenario: Storing jamming waveform templates and real-time threat ID tables in compact EW pods. IC Role / Device Role / Timing Role: Right port loads updated threat libraries from host; left port streams waveforms to DAC at precise intervals - synchronized via external timer. Use Value: 35 ns tRC supports ≥28 MB/s sustained bandwidth; PLCC-52 package meets SWaP-C requirements for pod integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1355BV33-167BZI | 3.3 V core, 167 MHz (6 ns tRC), 128K × 16 organization - higher speed but incompatible voltage and density | Requires level-shifting and redesign for 5 V legacy military systems; suited for new 3.3 V DSP interfaces | Select only if migrating to modern low-voltage architecture with increased bandwidth needs |
| IDT71V3577SA85BG | 5 V, 85 MHz (12 ns tRC), 32K × 18 organization - faster and wider, but no data retention mode | Lacks 2 V battery backup; unsuitable for systems requiring persistent memory during power loss | Prefer when raw throughput outweighs retention requirement and board layout accommodates larger BGA package |
Compared with CY7C1355BV33-167BZI and IDT71V3577SA85BG, the 7134LA35J8 uniquely balances military-qualified 5 V operation, 35 ns performance, and guaranteed 2 V data retention - making it irreplaceable in legacy avionics and EW platforms where voltage compatibility and nonvolatile holdover are mandatory.
Availability
7134LA35J8 is available at Aetrix Electronics and suitable for avionics flight control, tactical radar buffering, military secure radio baseband, and electronic warfare jamming controller applications requiring stable component supply across extended product lifecycles.
Supply support for 7134LA35J8 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 - acquired from Integrated Device Technology - was engineered specifically for deterministic, arbitration-free dual-processor communication in high-reliability military and aerospace systems.
FAQ
What is the maximum operating temperature range certified for the 7134LA35J8?
The 7134LA35J8 is qualified for operation from −55°C to +125°C per MIL-PRF-38535 QML Class V standards. This rating is explicitly confirmed in the "Recommended Operating Temperature" table (2720 tbl 03) and applies to the 7134LA35J8 orderable part with SB48 or FP48 packaging - though the J8 suffix denotes PLCC-52, its military temperature compliance remains identical per Renesas' rebranded datasheet revision May.10.21.
Does the 7134LA35J8 support true simultaneous read/write between ports?
Yes, the 7134LA35J8 permits fully asynchronous read on one port while writing on the other - as confirmed in the Functional Description section and Truth Table I. However, simultaneous access to the same memory location requires external arbitration to avoid data corruption; the device does not include on-chip collision detection or resolution logic.
What is the exact data retention current specification for the 7134LA35J8 at 2 V?
Per Table 2720 tbl 07, the 7134LA35J8 draws ≤4000 µA (4 mA) maximum ICCDR current during data retention mode at VCC = 2 V and military temperature range. Typical consumption is 100 µA - enabling multi-day holdover on small backup batteries in deployed systems.
Is the 7134LA35J8 pin-compatible with other members of the IDT7134 family?
No - the 7134LA35J8 uses the PLG52 (52-pin PLCC) package, while other variants like 7134LA35CB use SB48 (48-pin sidebraze DIP) and 7134LA35L48B use LC48 (48-pin LCC). Pin counts, layouts, and mechanical footprints differ; PCB redesign is required when substituting across package types, even within the same speed/power grade.
How does the 7134LA35J8 achieve 1 µA standby current?
The 7134LA35J8 achieves ≤1.0 µA ISB3 current by disabling all internal circuitry - including address decoders, sense amplifiers, and I/O buffers - when both CEL and CER are held above VCC − 0.2 V and all inputs are at valid CMOS levels (VIN > VCC − 0.2 V or VIN < 0.2 V), as defined in Table 2720 tbl 06b. This full-standby state is distinct from TTL-level standby (ISB1) which draws 70 mA.
7134LA35J8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7134LA35J8 FAQ
1.How can I place an order for 7134LA35J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA35J8 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 7134LA35J8 reliable?
The price and inventory of 7134LA35J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA35J8 is usually 5 days.
3.What payment methods are accepted for 7134LA35J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA35J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA35J8?
7134LA35J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA35J8 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 7134LA35J8?
For technical support, including 7134LA35J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA35J8 requirements.
6.How does Aetrix verify that 7134LA35J8 is sourced from the original manufacturer or authorized distributors?
All 7134LA35J8 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 7134LA35J8 meets industry standards.
7.What is the process for return or replacement of 7134LA35J8?
All 7134LA35J8 units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA35J8, 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 7134LA35J8 part is unused and in its original packaging.
Return procedure for 7134LA35J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134LA35J8 Tags
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