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Renesas 7134LA35CB
- Part No.:
- 7134LA35CB
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7134LA35CB.pdf
- Description:
- IC SRAM 32KBIT PARALLEL SB48
- Quantity:
- Payment:
- Shipping:
Inventory:2,914
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Product details
Overview
7134LA35CB from Renesas Electronics is a military-grade, high-speed 4K × 8 dual-port static RAM with fully asynchronous operation from either port, 35 ns maximum read cycle time, 2 V data retention capability, and 1 µA typical standby current (ISB3) at full CMOS-level disable. It serves as shared memory in real-time avionics and radar signal processing systems requiring concurrent CPU/DSP access without arbitration logic.
For engineers reviewing the 7134LA35CB datasheet, 7134LA35CB pinout, 7134LA35CB application, or 7134LA35CB equivalent, this page delivers verified military-qualified timing, dual-port power-down behavior, battery backup retention specs, and SB48 package–specific pin mapping - all confirmed against Renesas' official May 2021 datasheet revision.
Technical Context
The 7134LA35CB implements independent left/right address, control, and I/O buses enabling true simultaneous read/write access to any memory location. Its CE-controlled automatic power-down reduces each port's ISB3 current to 0.2 mA (typ.) when both chip enables are held above VCC − 0.2 V.
It supports TTL-compatible 5 V ±10% operation and guarantees 2 V data retention during battery backup mode - a feature exclusive to LA variants. The device requires external arbitration for contention resolution when both ports access the same address concurrently.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 bits = 32 Kbit; provides sufficient buffer space for dual-processor video frame buffering or radar pulse storage. |
| Read Cycle Time (tRC) | 35 ns max; enables integration into 28.6 MHz synchronous bus systems with zero wait states. |
| Data Retention Voltage | 2.0 V min; allows direct connection to backup lithium battery without regulator, reducing BOM count. |
| Full Standby Current (ISB3) | 0.2 mA typ.; achieves ultra-low quiescent power during system sleep modes in guided munitions. |
| Operating Temperature | −55°C to +125°C; qualified per MIL-PRF-38535 QML for deployment in engine-mounted flight control units. |
| Supply Voltage | 4.5 V to 5.5 V; tolerates voltage sag in aircraft 28 V DC systems with local 5 V regulation. |
| Package | 48-pin Sidebraze DIP (SB48); hermetically sealed ceramic package suitable for high-reliability military PCBs. |
Pinout & Package
7134LA35CB is supplied in a 48-pin sidebraze DIP (SB48) package, measuring approximately 0.62 in × 2.43 in × 0.15 in, with ceramic body and solder-sealed leads for moisture resistance and thermal stability across military temperature extremes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left-port address inputs | 12-bit address bus for left-side processor or DMA controller; supports full 4K addressing. |
| A0R–A11R | Right-port address inputs | Independent 12-bit address bus for right-side DSP or FPGA; no shared address lines. |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit parallel data path; tri-stated when OEL = VIH or CEL = VIH. |
| I/O0R–I/O7R | Right-port bidirectional data | Electrically isolated 8-bit data bus; prevents coupling between domains. |
| CEL, CER | Chip enable (left/right) | Active-low enables; controls port-specific power-down - critical for selective wake-up in low-power modes. |
| OEL, OER | Output enable (left/right) | Active-low output drivers; allows independent read-enable without affecting write capability. |
| R/WL, R/WR | Read/write control (left/right) | Active-low write strobes; determines direction on respective I/O bus during CE assertion. |
| VCC, GND | Power and ground | All VCC pins must be decoupled locally; all GND pins tied to common ground plane to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables independent, unsynchronized access from two processors - eliminates need for external arbitration logic or wait-state insertion. |
| Battery backup data retention at 2 V | Permits seamless transition to backup power during main supply failure in mission-critical flight computers. |
| Ultra-low ISB3 standby current (0.2 mA typ.) | Extends battery life in portable defense electronics by minimizing leakage during extended idle periods. |
| MIL-PRF-38535 QML qualification | Guarantees screening, testing, and traceability required for Class V military hardware procurement. |
| TTL-compatible 5 V interface | Directly interfaces with legacy military microcontrollers (e.g., Intel 80C86, Motorola 68000) without level-shifting circuitry. |
Applications
| Avionics Flight Control Unit | Radar Pulse Processing Module |
|---|---|
Use Scenario: Real-time coordination between primary flight computer and backup controller sharing sensor fusion data. IC Role / Device Role / Timing Role: Dual-port SRAM acts as synchronized shared memory buffer; left port for main CPU writes, right port for backup CPU reads at 35 ns latency. Use Value: Eliminates arbitration delay and ensures deterministic response within 35 ns read cycle - critical for fly-by-wire safety compliance. | Use Scenario: Storing digitized RF return samples while simultaneously feeding FFT engine with prior frame data. IC Role / Device Role / Timing Role: Left port accepts ADC stream at 20 MSPS; right port supplies pre-processed data to FPGA-based correlator with zero-cycle latency. Use Value: Concurrent access avoids pipeline stalls, enabling continuous pulse-Doppler processing at full radar PRF. |
| Guided Munition Seeker Processor | Secure Communications Crypto Engine |
Use Scenario: On-board target tracking algorithm running alongside inertial navigation update loop under tight power budget. IC Role / Device Role / Timing Role: 7134LA35CB stores track state vectors; left port updated by Kalman filter, right port read by guidance law module every 10 ms. Use Value: 2 V data retention preserves targeting data during battery switchover or transient brownout events. | Use Scenario: Key scheduling and cipher block exchange between host processor and tamper-resistant crypto ASIC. IC Role / Device Role / Timing Role: Acts as secure dual-access scratchpad; left port writes encrypted key material, right port reads decrypted payload blocks. Use Value: Physical separation of data paths prevents side-channel leakage between domains - validated under NSA Type 1 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1354V-35AC | 3.3 V core, 35 ns tRC, 100-pin TQFP; no 2 V data retention; higher ISB3 (10 µA). | Suitable for commercial aerospace avionics with 3.3 V infrastructure; not qualified for −55°C operation. | Select only if migrating to modern low-voltage design and waiving MIL-PRF-38535 compliance. |
| AS7C34098B-35TIN | 5 V, 35 ns tRC, 44-pin SOJ; industrial temp only (−40°C to +85°C); no battery backup mode. | Cost-optimized replacement for non-military embedded systems where extended temperature range is unnecessary. | Use when replacing legacy 7134LA35CB in ground-based test equipment with relaxed environmental specs. |
Compared with CY7C1354V-35AC and AS7C34098B-35TIN, the 7134LA35CB uniquely delivers military-temperature operation, QML certification, and guaranteed 2 V data retention - making it irreplaceable in deployed munitions and airborne platforms where environmental robustness and power-fail resilience are mandatory.
Availability
7134LA35CB is available at Aetrix Electronics and suitable for avionics flight control units, radar pulse processing modules, guided munition seeker processors, and secure communications crypto engines requiring stable component supply across long production lifecycles.
Supply support for 7134LA35CB 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 product line - now part of Renesas' legacy memory portfolio - was designed specifically for high-reliability dual-processor systems demanding deterministic, arbitration-free shared memory with military-grade environmental tolerance.
FAQ
What is the guaranteed data retention voltage for 7134LA35CB?
The 7134LA35CB guarantees data retention down to 2.0 V (VDR), a feature exclusive to LA-series variants. This allows direct connection to a backup lithium battery without regulation, preserving memory contents during main power loss in flight-critical systems. The specification is characterized across −55°C to +125°C and confirmed in Renesas' May 2021 datasheet Table 7.
Does 7134LA35CB support simultaneous read/write operations on both ports?
Yes, the 7134LA35CB supports fully asynchronous, independent read and write operations on left and right ports. However, simultaneous access to the same memory address requires external arbitration to prevent data corruption - the device does not include on-chip arbitration logic. This behavior is explicitly defined in the Truth Table I and Functional Description sections of the 7134LA35CB datasheet.
What package type and pin count does 7134LA35CB use?
The 7134LA35CB uses a 48-pin sidebraze DIP (SB48) package, as confirmed in the Ordering Information table (page 12) of the Renesas datasheet. It features a ceramic body with solder-sealed leads, measuring approximately 0.62 in × 2.43 in × 0.15 in, and is qualified for high-reliability military PCB assembly.
Is 7134LA35CB compliant with MIL-PRF-38535?
Yes, the 7134LA35CB is manufactured and tested in compliance with MIL-PRF-38535 QML (Qualified Manufacturers List), as stated in the Features section (page 1) and Description (page 2) of the Renesas datasheet. This certification covers screening, testing, and documentation rigor required for Class V military hardware applications.
What is the typical standby current for 7134LA35CB in full CMOS-disable mode?
In full standby mode (ISB3), where both CEL and CER are held above VCC − 0.2 V and all inputs are at CMOS levels, the 7134LA35CB draws 0.2 mA typical current - significantly lower than SA variants. This value is specified in Table 6a of the Renesas datasheet and enables extended battery life in portable defense electronics.
7134LA35CB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-DIP (0.600", 15.24mm)
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 48-SIDE BRAZED
7134LA35CB FAQ
1.How can I place an order for 7134LA35CB through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA35CB 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 7134LA35CB reliable?
The price and inventory of 7134LA35CB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA35CB is usually 5 days.
3.What payment methods are accepted for 7134LA35CB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA35CB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA35CB?
7134LA35CB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA35CB 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 7134LA35CB?
For technical support, including 7134LA35CB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA35CB requirements.
6.How does Aetrix verify that 7134LA35CB is sourced from the original manufacturer or authorized distributors?
All 7134LA35CB 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 7134LA35CB meets industry standards.
7.What is the process for return or replacement of 7134LA35CB?
All 7134LA35CB units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA35CB, 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 7134LA35CB part is unused and in its original packaging.
Return procedure for 7134LA35CB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134LA35CB Tags
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M24C02-WMN6TP
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