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Renesas 7134SA35J
- Part No.:
- 7134SA35J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134SA35J.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,387
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Product details
Overview
IDT7134SA35J from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with military-grade timing (35 ns max read cycle), TTL-compatible 5V ±10% operation, and independent asynchronous left/right ports enabling concurrent access without on-chip arbitration. It delivers 700 mW typical active power and 5 mW standby power, and is used in real-time avionics data buffers where deterministic latency and dual-CPU coherency are critical.
For engineers reviewing the IDT7134SA35J datasheet, IDT7134SA35J pinout, IDT7134SA35J application, or IDT7134SA35J equivalent, key selection criteria include military-temperature support (−55°C to +125°C), 48-pin sidebraze DIP (SB48) package compatibility, dual-port contention management, and CE-controlled low-power standby mode.
Technical Context
The IDT7134SA35J implements fully asynchronous dual-port architecture with separate address, control, and I/O buses for left (L) and right (R) ports - no internal arbitration logic. Each port features independent chip enable (CEL/CER), output enable (OEL/OER), and read/write (R/WL/R/WR) controls, allowing simultaneous reads/writes to distinct memory locations.
It uses CMOS process technology and supports battery backup data retention only in LA variants; the SA variant prioritizes speed over ultra-low standby. The 35 ns access time applies across the full military temperature range, with DC operating voltage strictly 4.5–5.5 V and input levels TTL-compatible (VIH ≥ 2.2 V, VIL ≤ 0.8 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 bits (32,768 bits total); supports two independent 8-bit data paths. |
| Max Read Cycle Time | 35 ns - guarantees worst-case latency for deterministic real-time systems at −55°C to +125°C. |
| Supply Voltage | 4.5 V to 5.5 V - single 5V ±10% rail; no auxiliary supplies required. |
| Active Power (Typ.) | 700 mW - enables high-throughput operation without forced air cooling in sealed enclosures. |
| Standby Current (Typ.) | 25 mA (ISB1, TTL-level CE high) - low enough for intermittent wake-up in mission-critical hold modes. |
| Operating Temp. | −55°C to +125°C - qualified per MIL-PRF-38535 QML for aerospace and defense platforms. |
| I/O Compatibility | TTL - interfaces directly with legacy 5V microcontrollers, FPGAs, and bus controllers without level shifters. |
Pinout & Package
Package: 48-pin sidebraze ceramic DIP (SB48), body size ≈ 0.62 in × 2.43 in × 0.15 in; all VCC pins require local decoupling, all GND pins must be connected to system ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left-port address inputs | 12-bit address bus for left-side memory access; latched on CE/L assertion. |
| A0R–A11R | Right-port address inputs | Independent 12-bit address bus; enables true parallel addressing without multiplexing. |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit tri-state data path; direction controlled by R/WL and OEL. |
| I/O0R–I/O7R | Right-port bidirectional data | Electrically isolated from left port; prevents bus contention during simultaneous use. |
| CEL, CER | Chip enable (left/right) | Active-low enables respective port; unselected port enters ISB1/ISB2 standby mode. |
| OEL, OER | Output enable (left/right) | Active-low enables output drivers; high-impedance state when disabled. |
| R/WL, R/WR | Read/write control (left/right) | Low = write, high = read; determines data flow direction on associated I/O bus. |
| VCC, GND | Power and ground | Multiple VCC/GND pins distributed across package for low-impedance supply routing and noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables independent, unsynchronized access from two processors or subsystems without arbitration logic overhead. |
| Military-grade 35 ns access time | Guaranteed performance across −55°C to +125°C, eliminating derating calculations for harsh-environment designs. |
| CE-controlled standby mode | Reduces power to 25 mA (ISB1) or 1.0 mA (ISB3) per port, supporting low-duty-cycle telemetry and watchdog functions. |
| TTL-compatible interface | Direct connection to legacy 5V logic families without level translation, simplifying integration into existing avionics backplanes. |
| MIL-PRF-38535 QML compliance | Qualified for Class V (space-level) reliability with lot traceability, radiation hardness assurance, and extended burn-in screening. |
Applications
| Avionics Flight Control Buffer | Real-Time Radar Signal Processor |
|---|---|
|
Use Scenario: Dual-CPU flight control unit sharing sensor fusion data with deterministic latency. IC Role / Device Role / Timing Role: Shared memory buffer between primary and backup flight computers; serves as non-blocking data exchange channel. Use Value: 35 ns read cycle ensures sub-microsecond response to attitude changes, meeting DO-254 Level A timing budgets. |
Use Scenario: High-speed radar front-end processing requiring simultaneous ADC capture and DSP readout. IC Role / Device Role / Timing Role: Real-time FIFO between analog acquisition and digital signal processing pipelines. Use Value: Independent left/right ports eliminate pipeline stalls during burst-mode sampling at >10 MSPS rates. |
| Military Communications Transceiver | Secure Crypto Engine Interface |
|
Use Scenario: Full-duplex HF/VHF radio with concurrent encryption/decryption and modulation/demodulation. IC Role / Device Role / Timing Role: Dual-port SRAM acting as shared key and packet buffer between crypto ASIC and baseband processor. Use Value: Asynchronous access prevents timing collisions during encrypted voice transmission bursts. |
Use Scenario: Tamper-resistant hardware security module exchanging keys with host processor under strict timing constraints. IC Role / Device Role / Timing Role: Secure memory conduit between trusted execution environment and external controller. Use Value: MIL-qualified operation ensures integrity during thermal shock events in vehicle-mounted cryptographic units. |
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-35AC | 35 ns access, 4K × 8, but commercial temp only (0°C to +70°C); uses 52-pin TQFP, not SB48. | Suitable for ground-based test equipment, not flight-certified systems. | Select only if MIL-temp qualification and ceramic DIP packaging are unnecessary. |
| IDT7134LA35CB | Same 35 ns speed and SB48 package, but LA variant offers 1 µA ISB3 standby vs. 1.0 mA for SA; no battery retention in SA. | Preferred where ultra-low standby current matters more than peak speed margin. | Choose IDT7134LA35CB if system duty cycle includes long idle periods powered by backup batteries. |
Compared with CY7C1352V-35AC and IDT7134LA35CB, the IDT7134SA35J uniquely combines military temperature range, sidebraze DIP reliability, and 35 ns deterministic latency - making it irreplaceable in certified airborne computing where environmental robustness and timing predictability are non-negotiable.
Availability
IDT7134SA35J is available at Aetrix Electronics and suitable for avionics flight control, radar signal processing, and secure military communications requiring stable component supply across extended product lifecycles.
Supply support for IDT7134SA35J 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and aerospace markets.
The IDT7134SA35J belongs to Renesas' legacy dual-port SRAM family, originally developed by Integrated Device Technology (IDT) and optimized for deterministic, high-reliability embedded systems demanding concurrent multi-processor memory access.
FAQ
What is the guaranteed maximum read cycle time for IDT7134SA35J across its full operating temperature range?
The IDT7134SA35J guarantees a maximum read cycle time of 35 ns over the full military temperature range of −55°C to +125°C. This value is production-tested and specified in the AC Electrical Characteristics table under "7134X35 Com'l & Military" conditions. It reflects worst-case timing including process variation and voltage tolerance (VCC = 4.5 V to 5.5 V), ensuring deterministic behavior in safety-critical applications without derating.
Does IDT7134SA35J support battery backup data retention like some LA variants?
No, IDT7134SA35J does not support battery backup data retention. That feature is exclusive to LA variants (e.g., IDT7134LA35CB), which specify VDR = 2.0 V minimum and ICCDR ≤ 4000 µA over military temperature. The SA suffix denotes standard power configuration optimized for speed, with standby current specified at 25 mA (ISB1) and 1.0 mA (ISB3), but no data retention below 4.5 V.
Which package types are available for IDT7134SA35J, and is SB48 the only military-grade option?
IDT7134SA35J is offered in SB48 (48-pin sidebraze ceramic DIP) and LC48 (48-pin LCC). Per the Ordering Information table, SB48 and LC48 are both qualified for military temperature grade (−55°C to +125°C) and comply with MIL-PRF-38535 QML. PLCC (PLG52) variants exist for SA55/SA70 but not for SA35 - confirming SB48 and LC48 as the only military-grade packages for IDT7134SA35J.
How does the CE-controlled standby mode function on IDT7134SA35J, and what are the relevant current values?
When CEL or CER is driven high, the corresponding port enters standby mode. IDT7134SA35J defines four standby states: ISB1 (both CE high, TTL inputs, 25 mA typ.), ISB2 (one CE low, one high, 75 mA typ.), ISB3 (both CE > VCC − 0.2 V, CMOS inputs, 1.0 mA typ.), and ISB4 (one CE in CMOS high state, 75 mA typ.). These values are measured at VCC = 5.0 V and TA = +25°C, with full-range specs provided in Table 06a.
Can IDT7134SA35J be used interchangeably with IDT7134LA35CB in the same PCB layout?
IDT7134SA35J and IDT7134LA35CB share identical pinout, package (SB48), timing (35 ns), and DC specifications - making them footprint- and signal-compatible. However, they differ in standby current (SA: 1.0 mA ISB3 vs. LA: 0.2 µA ISB3) and lack battery retention in SA. No PCB changes are required for substitution, but system-level power budgeting and retention requirements must be revalidated.
7134SA35J 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7134SA35J FAQ
1.How can I place an order for 7134SA35J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA35J 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 7134SA35J reliable?
The price and inventory of 7134SA35J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA35J is usually 5 days.
3.What payment methods are accepted for 7134SA35J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA35J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA35J?
7134SA35J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA35J 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 7134SA35J?
For technical support, including 7134SA35J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA35J requirements.
6.How does Aetrix verify that 7134SA35J is sourced from the original manufacturer or authorized distributors?
All 7134SA35J 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 7134SA35J meets industry standards.
7.What is the process for return or replacement of 7134SA35J?
All 7134SA35J units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA35J, 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 7134SA35J part is unused and in its original packaging.
Return procedure for 7134SA35J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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