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Renesas 7134LA45J8
- Part No.:
- 7134LA45J8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134LA45J8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,050
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Product details
Overview
7134LA45J8 from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent asynchronous left/right ports, 45 ns read cycle time (max), 1 mW typical standby power, and battery backup data retention down to 2 V - used in real-time inter-processor communication, military avionics bus arbitration, and legacy industrial controller memory buffers.
For engineers reviewing the 7134LA45J8 datasheet, 7134LA45J8 pinout, 7134LA45J8 application, or 7134LA45J8 equivalent, key selection criteria include dual-port contention management, military-grade temperature operation (–55°C to +125°C), 52-pin PLCC package compatibility, and low-power data retention capability unique to the LA variant.
Technical Context
The 7134LA45J8 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. It supports TTL-compatible 5 V ±10% supply and operates across military temperature range (–55°C to +125°C).
Each port features independent chip enable (CEL/CER), output enable (OEL/OER), and read/write (R/WL/R/WR) controls, with automatic CMOS-level power-down (ISB3 ≤ 0.2 mA typ.) when both CE inputs exceed VCC – 0.2 V. Data retention at 2 V is exclusive to LA-series parts and verified for full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 8 bits (32,768-bit total), dual-port SRAM with independent left/right address/data paths |
| Read Cycle Time (tRC) | 45 ns maximum - defines minimum clock period for continuous read operations on either port |
| Standby Current (ISB3) | 0.2 mA typical - achieved when both CE inputs held > VCC – 0.2 V with CMOS-level inputs, enabling ultra-low-power retention |
| Data Retention Voltage | 2.0 V minimum - guarantees non-volatile data hold during brown-out or battery-backup mode (LA-only feature) |
| Operating Temperature | –55°C to +125°C - qualified per MIL-PRF-38535 QML for high-reliability military systems |
| Supply Voltage | 4.5 V to 5.5 V - single 5 V ±10% rail, TTL-compatible input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.2 V) |
| Package | 52-pin PLCC (PLG52) - surface-mount, hermetically sealed ceramic body (0.75″ × 0.75″ × 0.17″) |
Pinout & Package
7134LA45J8 is housed in a 52-pin Plastic Leaded Chip Carrier (PLCC, package code PLG52), top-view orientation with pin 1 marked by index notch. The package supports reflow soldering and meets military moisture sensitivity level MSL-3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left-port address inputs | 12-bit address bus for left-side memory access (4K = 212 locations) |
| A0R–A11R | Right-port address inputs | Independent 12-bit address bus for right-side access; no shared address lines |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit data path; high-impedance when OEL = VIH or CEL = VIH |
| I/O0R–I/O7R | Right-port bidirectional data | Electrically isolated 8-bit path; no internal bus contention protection |
| CEL / CER | Left/right chip enable | Active-low enables port logic; drives ISB1/ISB2/ISB3 current states based on voltage level |
| OEL / OER | Left/right output enable | Active-low enables output drivers; overrides R/W state for read-only tri-state control |
| R/WL / R/WR | Left/right read/write control | Active-low write; high = read (outputs enabled only if OE also low) |
| VCC, GND | Power and ground | Multiple VCC/GND pins distributed for noise reduction; all must be connected |
| N/C | No-connect | Pins 49–52 (PLG52) are unconnected; must remain floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Dual-port asynchronous operation | Enables simultaneous, independent access from two processors or buses without arbitration logic - reduces system latency in real-time control loops |
| Battery backup data retention | Maintains stored data at 2 V supply (LA-only), supporting fail-safe memory preservation during main power loss in avionics and weapon systems |
| MIL-PRF-38535 QML qualification | Meets stringent military reliability standards including radiation hardness, burn-in, and lot traceability - required for flight-critical hardware |
| Ultra-low standby power (ISB3) | 0.2 mA typical consumption in full standby eliminates need for external power gating in always-on subsystems |
| 52-pin PLCC packaging | Hermetic ceramic construction resists thermal cycling and humidity - validated for 10+ year field life in harsh environments |
Applications
| Avionics Data Bus Interface | Tactical Radio Baseband Processing |
|---|---|
|
Use Scenario: Dual-processor communication buffer between mission computer and sensor interface unit in fighter jet radar subsystem. IC Role / Device Role / Timing Role: Shared memory conduit allowing lock-free data exchange between ARM-based control processor and FPGA-based signal processor. Use Value: 45 ns tRC enables sub-microsecond inter-processor handshaking; military temp rating ensures operation at altitude-induced thermal extremes. |
Use Scenario: Real-time waveform buffering in software-defined radio transceiver handling encrypted HF/VHF waveforms. IC Role / Device Role / Timing Role: Simultaneous write (from ADC/DSP chain) and read (to DAC/modulator) memory block with deterministic timing. Use Value: Independent port timing eliminates pipeline stalls; 2 V data retention preserves cryptographic keys during brief power interruptions. |
| Hardened Industrial PLC Memory | Military Vehicle Control Unit |
|
Use Scenario: Fault-tolerant I/O mapping memory in nuclear plant safety controller requiring continuous state retention. IC Role / Device Role / Timing Role: Non-volatile shadow RAM holding critical actuator positions and sensor thresholds during brown-out events. Use Value: LA-series 2 V retention sustains memory integrity below standard 4.5 V operating floor; QML certification validates long-term reliability. |
Use Scenario: Inter-ECU messaging buffer between engine control and chassis stability modules in armored vehicle platform. IC Role / Device Role / Timing Role: Deterministic latency memory for CAN-FD message queuing and timestamp synchronization across distributed ECUs. Use Value: Asynchronous dual-port eliminates arbitration delays; –55°C to +125°C range accommodates under-hood thermal transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1343KV18 | 4.5 V to 5.5 V supply, 25 ns tRC, 100-pin TQFP, no data retention below 4.5 V | Commercial/industrial systems only; lacks military temp rating and 2 V retention | Choose for higher speed where military qualification and battery backup are unnecessary |
| AS7C34098B | 3.3 V core, 15 ns tRC, 100-pin TQFP, no dual-port contention management support | Modern low-voltage embedded designs; incompatible voltage domain and package | Use only in new 3.3 V architectures - not a drop-in replacement due to voltage, pinout, and feature mismatch |
Compared with CY7C1343KV18 and AS7C34098B, the 7134LA45J8 uniquely delivers military-grade reliability, true 2 V data retention, and proven dual-port contention tolerance - making it irreplaceable in legacy defense platforms where qualification continuity and power-fail resilience are mandatory.
Availability
7134LA45J8 is available at Aetrix Electronics and suitable for avionics data bus interfaces, tactical radio baseband processing, and hardened industrial PLC memory requiring stable component supply across extended product lifecycles.
Supply support for 7134LA45J8 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 - now part of Renesas' legacy high-reliability memory portfolio - was originally designed for military and aerospace systems demanding deterministic dual-port timing, extreme environmental resilience, and long-term obsolescence mitigation.
FAQ
What is the guaranteed data retention voltage for 7134LA45J8?
The 7134LA45J8 guarantees data retention down to 2.0 V across its full military temperature range (–55°C to +125°C), a feature exclusive to LA-series variants and confirmed in Table 7 (tCDR, VDR). This enables reliable battery-backup operation during main power failure in mission-critical systems. The 7134LA45J8 does not retain data below 2.0 V.
Does 7134LA45J8 support simultaneous read/write to the same memory location?
Yes, the 7134LA45J8 permits simultaneous access to the same address from both ports, but data integrity is not guaranteed by the device - users must implement external arbitration or protocol-level conflict resolution. The 7134LA45J8 datasheet explicitly states that "it is the user's responsibility to ensure data integrity" during contention, and no internal collision detection is provided.
What package type and pin count does 7134LA45J8 use?
The 7134LA45J8 uses a 52-pin Plastic Leaded Chip Carrier (PLCC) package, designated PLG52 in Renesas documentation. Its top-view pinout includes dedicated address, data, and control lines for left and right ports, plus multiple VCC/GND pins for noise immunity. Pin 1 is identified by an index notch in the package corner.
Is 7134LA45J8 compliant with MIL-PRF-38535 QML?
Yes, the 7134LA45J8 is manufactured and tested to MIL-PRF-38535 QML Class V requirements, as stated in the Features section and Ordering Information tables. This includes screening for radiation tolerance, extended burn-in, and lot traceability - essential for deployment in U.S. Department of Defense and NATO-certified systems. The 7134LA45J8 carries full QML certification documentation.
What is the maximum operating current for 7134LA45J8 during active dual-port operation?
At 45 ns speed grade and military temperature range, the 7134LA45J8 draws up to 240 mA dynamic operating current (ICC) when both ports are active and outputs disabled - per Table 6b (7134X45 row, MIL & IND column). This value assumes VCC = 5.5 V and f = fMAX. The 7134LA45J8's typical active power is 700 mW, consistent with this current draw.
7134LA45J8 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:
- 45ns
- Access Time:
- 45 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)
7134LA45J8 FAQ
1.How can I place an order for 7134LA45J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA45J8 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 7134LA45J8 reliable?
The price and inventory of 7134LA45J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA45J8 is usually 5 days.
3.What payment methods are accepted for 7134LA45J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA45J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA45J8?
7134LA45J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA45J8 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 7134LA45J8?
For technical support, including 7134LA45J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA45J8 requirements.
6.How does Aetrix verify that 7134LA45J8 is sourced from the original manufacturer or authorized distributors?
All 7134LA45J8 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 7134LA45J8 meets industry standards.
7.What is the process for return or replacement of 7134LA45J8?
All 7134LA45J8 units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA45J8, 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 7134LA45J8 part is unused and in its original packaging.
Return procedure for 7134LA45J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134LA45J8 Tags
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