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Renesas 7134LA55J8
- Part No.:
- 7134LA55J8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134LA55J8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,690
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Product details
Overview
IDT7134LA55J8 from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent left/right asynchronous ports, 55 ns maximum read cycle time, 1 μA typical standby current (ISB3), and battery backup data retention down to 2 V - designed for real-time inter-processor communication in military-grade avionics and radar signal processing systems.
For engineers reviewing the IDT7134LA55J8 datasheet, IDT7134LA55J8 pinout, IDT7134LA55J8 application, or IDT7134LA55J8 equivalent, key selection criteria include dual-port arbitration-free operation, TTL-compatible 5 V ±10% supply, industrial/military temperature support (–40°C to +85°C / –55°C to +125°C), and low-power LA-series standby behavior under CMOS-level chip enable.
Technical Context
The IDT7134LA55J8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port - enabling concurrent read/write access without on-chip arbitration logic. Each port features independent CE, OE, and R/W controls, allowing external arbitration or contention-tolerant system designs.
It uses CMOS high-performance fabrication to achieve 700 mW typical active power and 1 μA full-standby current (ISB3) when both ports' CE inputs exceed VCC − 0.2 V. The LA variant supports 2 V data retention mode for battery-backed operation - a capability absent in SA variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 8 bits (32 Kbit total), dual-port SRAM with independent left/right address/data/control paths |
| Read Cycle Time (tRC) | 55 ns max - defines minimum interval between successive reads on same port; enables 18.2 MHz sustained throughput |
| Standby Current (ISB3) | 1 μA typical - achieved when both CE inputs > VCC − 0.2 V and all inputs static; critical for battery-backed retention |
| Data Retention Voltage | 2.0 V min - guarantees nonvolatile data hold during main power loss; exclusive to LA-series devices |
| Supply Voltage | 4.5 V to 5.5 V - TTL-compatible single 5 V ±10% rail; no auxiliary supplies required |
| Operating Temperature | –55°C to +125°C - qualified to MIL-PRF-38535 QML for high-reliability military applications |
| Package | 48-pin Sidebraze Ceramic DIP (SB48) - hermetically sealed, leaded, RoHS-compliant with 0.62″ × 2.43″ footprint |
Pinout & Package
Package: 48-pin Sidebraze Ceramic Dual In-line Package (SB48), hermetic, military-grade, body size ≈ 0.62 in × 2.43 in × 0.15 in.
| 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 tri-state data bus; driven during write, enabled by OEL and CEL, high-Z otherwise |
| I/O0R–I/O7R | Right Port Bidirectional Data | Independent 8-bit tri-state data bus; isolated electrically and timing-wise from left port |
| CEL, CER | Chip Enable (Left/Right) | Active-low enables respective port; when high, port enters low-power standby (ISB2/ISB4) |
| OEL, OER | Output Enable (Left/Right) | Active-low enables output drivers; overrides R/W state for read-only visibility control |
| R/WL, R/WR | Read/Write Control (Left/Right) | Active-low = write; high = read; determines direction of data flow on associated I/O bus |
| VCC, GND | Power Supply | Single 5 V ±10% supply; all VCC pins must be decoupled locally; all GND pins tied to common ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Dual-port asynchronous operation | Enables simultaneous, independent access from two processors or subsystems without wait states or arbitration logic |
| Battery backup data retention | Retains stored data at 2 V supply - allows seamless switchover to backup battery during main power failure |
| Ultra-low standby current (ISB3) | 1 μA typical when both ports disabled with CMOS-level CE - extends battery life in always-on systems |
| MIL-PRF-38535 QML qualification | Fully compliant with military reliability standards including screening, burn-in, and radiation tolerance testing |
| TTL-compatible interface | Direct connection to legacy 5 V logic families without level-shifting; VIH = 2.2 V min, VIL = 0.8 V max |
Applications
| Avionics Flight Control Systems | Radar Signal Processing Units |
|---|---|
Use Scenario: Real-time exchange of sensor fusion data and actuator commands between redundant flight computers. IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared memory buffer with deterministic 55 ns read latency and zero arbitration overhead. Use Value: Eliminates software synchronization bottlenecks and ensures sub-100 ns inter-processor data handoff under MIL-STD-704 power transients. |
Use Scenario: Storing intermediate FFT coefficients and filter weights during pulse-Doppler radar processing. IC Role / Device Role / Timing Role: Provides concurrent read (DSP core) and write (ADC interface) access to overlapping memory regions without pipeline stalls. Use Value: Sustains 18.2 MHz memory bandwidth across both ports, enabling real-time 100+ MSPS baseband processing. |
| Military Communications Radios | Electronic Warfare Jamming Systems |
Use Scenario: Secure key exchange and encrypted payload buffering between crypto module and RF transceiver. IC Role / Device Role / Timing Role: LA-series retention mode preserves cryptographic keys during brownout events or battery-switchover transitions. Use Value: Guarantees 2 V data hold for >10 years at +85°C - meeting NSA Type 1 encryption device lifecycle requirements. |
Use Scenario: Rapid reconfiguration of jamming waveform parameters between threat detection and response phases. IC Role / Device Role / Timing Role: Dual-port architecture allows one processor to load new waveform tables while another executes active jamming sequences. Use Value: Enables <500 ns context switch latency between threat libraries - critical for agile electronic attack against frequency-hopping targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1355BV-55AC | 55 ns tRC, 3.3 V supply, 100-pin TQFP; no 2 V data retention | Requires level-shifting for 5 V systems; unsuitable for battery-retained military modules | Choose only if migrating to 3.3 V architecture and external retention circuitry is acceptable |
| IDT7133LA55JG | Same 55 ns speed, 4K × 8, LA-series, but in 52-pin PLCC (PLG52); identical electrical specs | Smaller footprint and surface-mount compatible; lacks hermetic sealing of SB48 package | Select for space-constrained PCBs where MIL-PRF-38535 hermeticity is not mandated |
Compared with CY7C1355BV-55AC and IDT7133LA55JG, the IDT7134LA55J8 uniquely delivers 5 V TTL compatibility, MIL-PRF-38535 QML certification, and guaranteed 2 V data retention - making it irreplaceable in legacy 5 V military platforms requiring hermetic packaging and battery backup.
Availability
IDT7134LA55J8 is available at Aetrix Electronics and suitable for avionics flight control systems, radar signal processing units, and military communications radios requiring stable component supply across extended product lifecycles.
Supply support for IDT7134LA55J8 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.
IDT7134LA55J8 belongs to Renesas' legacy dual-port SRAM product line, engineered specifically for high-reliability, contention-tolerant memory interfacing in safety-critical military and aerospace systems.
FAQ
What is the maximum operating temperature range supported by the IDT7134LA55J8?
The IDT7134LA55J8 is rated for –55°C to +125°C operation and is manufactured in compliance with MIL-PRF-38535 QML, ensuring performance and reliability across the full military temperature range without derating.
Does the IDT7134LA55J8 support true dual-port contention handling?
No - the IDT7134LA55J8 does not include internal arbitration logic. When both ports access the same memory location simultaneously, users must implement external arbitration or accept potential data corruption; this is explicitly documented in the datasheet functional description.
What is the significance of the "LA" suffix in IDT7134LA55J8?
The "LA" denotes the Low-power variant of the IDT7134 family, featuring 1 μA typical ISB3 standby current and 2 V data retention capability - distinguishing it from the higher-power "SA" variant which lacks retention mode and draws 4 μA in full standby.
Which package type is used for the IDT7134LA55J8?
IDT7134LA55J8 uses the 48-pin Sidebraze Ceramic DIP (SB48) package - a hermetically sealed, through-hole military-grade package with dimensions approximately 0.62 in × 2.43 in × 0.15 in, as confirmed in the ordering information table.
Can the IDT7134LA55J8 operate with a 3.3 V supply?
No - the IDT7134LA55J8 requires a 5 V ±10% supply (4.5 V to 5.5 V) and is TTL-compatible; it is not specified for 3.3 V operation, and applying 3.3 V will result in undefined functionality and failure to meet AC/DC specifications.
7134LA55J8 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:
- 55ns
- Access Time:
- 55 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)
7134LA55J8 FAQ
1.How can I place an order for 7134LA55J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA55J8 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 7134LA55J8 reliable?
The price and inventory of 7134LA55J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA55J8 is usually 5 days.
3.What payment methods are accepted for 7134LA55J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA55J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA55J8?
7134LA55J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA55J8 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 7134LA55J8?
For technical support, including 7134LA55J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA55J8 requirements.
6.How does Aetrix verify that 7134LA55J8 is sourced from the original manufacturer or authorized distributors?
All 7134LA55J8 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 7134LA55J8 meets industry standards.
7.What is the process for return or replacement of 7134LA55J8?
All 7134LA55J8 units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA55J8, 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 7134LA55J8 part is unused and in its original packaging.
Return procedure for 7134LA55J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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