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Renesas 7134SA35J8
- Part No.:
- 7134SA35J8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134SA35J8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,307
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Product details
Overview
7134SA35J8 from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent asynchronous left/right ports, 35 ns maximum read cycle time (tRC), TTL-compatible 5V ±10% operation, and military-grade temperature range (–55°C to +125°C). It enables concurrent memory access in real-time arbitration-free systems such as radar signal processors and avionics data buffers.
For engineers reviewing the 7134SA35J8 datasheet, 7134SA35J8 pinout, 7134SA35J8 application, or 7134SA35J8 equivalent, key selection criteria include dual-port contention management, 2V data retention capability (not supported in SA variant), standby current under CMOS-level CE control (ISB3 = 1.0 mA typ.), and compatibility with 48-pin SB48 sidebraze DIP packaging.
Technical Context
The 7134SA35J8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port-no on-chip arbitration logic required. Each port features independent chip enable (CEL/CER), output enable (OEL/OER), and read/write (R/WL/R/WR) controls, enabling simultaneous but externally managed access to shared memory locations.
It uses CMOS high-performance fabrication for low dynamic power (ICC = 150 mA typ. at fMAX), with automatic power-down via CE assertion. Unlike LA variants, the SA version lacks battery backup data retention (VDR = N/A), and operates only within MIL-PRF-38535 QML-compliant military temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 8 bits (32,768-bit total); supports byte-wide parallel access per port |
| Max Read Cycle Time (tRC) | 35 ns - defines minimum interval between successive read operations on same port |
| Supply Voltage | 5.0 V ±10% - requires single TTL-compatible rail; no dual-supply or voltage regulation needed |
| Operating Temperature | –55°C to +125°C - qualified per MIL-PRF-38535 QML for mission-critical embedded systems |
| Active Current (ICC) | 150 mA typical - determines thermal design margin and power supply sizing for full dual-port activity |
| Full Standby Current (ISB3) | 1.0 mA typical - achieved when both CE inputs > VCC − 0.2 V and all inputs static; enables ultra-low-power sleep mode |
| Input/Output Capacitance | 11 pF - impacts trace routing length limits and fanout capability in high-speed bus designs |
Pinout & Package
7134SA35J8 is packaged in a 48-pin sidebraze DIP (SB48), measuring approximately 0.62 in × 2.43 in × 0.15 in, with through-hole mounting and hermetically sealed ceramic construction suitable for high-reliability military applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left-port address inputs | 12-bit address bus for left-side memory access; must be stable before tAA (35 ns max) |
| A0R–A11R | Right-port address inputs | Independent 12-bit address bus; allows simultaneous addressing of different locations on each port |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit data path; direction controlled by R/WL; high-impedance when OEL = VIH or CEL = VIH |
| I/O0R–I/O7R | Right-port bidirectional data | Electrically isolated from left port; no internal bus contention; requires external arbitration if accessing same location |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; drives ISB1/ISB2/ISB3/ISB4 standby modes based on logic level and input type |
| OEL / OER | Output enable (left/right) | Active-low enables output drivers; high-impedance state when deasserted, allowing bus sharing |
| R/WL / R/WR | Read/write control (left/right) | Active-low write; high = read; must remain stable during address transitions per timing spec |
| VCC / GND | Power and ground | All VCC pins must be connected to 5V ±10%; all GND pins tied to common system ground |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables independent, unsynchronized reads/writes on left and right ports without clock or arbitration logic |
| TTL-compatible interface | Direct connection to legacy 5V microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
| MIL-PRF-38535 QML qualification | Meets rigorous screening, testing, and documentation requirements for defense/aerospace deployment |
| Low standby power (ISB3 = 1.0 mA typ.) | Reduces system-level quiescent power in intermittently active subsystems like sensor pre-processors |
| 48-pin SB48 ceramic DIP package | Provides mechanical robustness, thermal stability, and hermetic sealing for harsh environmental operation |
Applications
| Radar Signal Processing | Avionics Data Buffering |
|---|---|
Use Scenario: Real-time digitized RF echo data from phased-array antennas is buffered and cross-ported between acquisition and FFT processing units. IC Role / Device Role / Timing Role: Dual-port SRAM acts as ping-pong memory buffer, accepting ADC samples on one port while feeding DSP engine on the other. Use Value: 35 ns tRC enables sub-microsecond memory turnaround, sustaining >28.5 MB/s aggregate bandwidth across both ports without wait states. |
Use Scenario: Flight control computers require deterministic, contention-free exchange of sensor telemetry and actuator commands between redundant processor modules. IC Role / Device Role / Timing Role: 7134SA35J8 serves as shared memory hub with hardware-enforced isolation between left (sensor input) and right (command output) domains. Use Value: MIL-qualified –55°C to +125°C operation ensures uninterrupted function across extreme aircraft thermal profiles and vibration environments. |
| Secure Communication Modems | Tactical Vehicle Control Systems |
Use Scenario: Encryption engines and baseband processors in SATCOM modems exchange cipher-text blocks and key material via shared memory. IC Role / Device Role / Timing Role: Left port interfaces with FPGA-based crypto accelerator; right port connects to ARM-based protocol stack controller. Use Value: Independent OE/CE controls allow precise gating of data visibility, supporting secure memory partitioning without software overhead. |
Use Scenario: Armored vehicle electronic control units coordinate engine, transmission, and weapon subsystems using time-critical shared status registers and command queues. IC Role / Device Role / Timing Role: 7134SA35J8 provides deterministic inter-processor communication channel with guaranteed 35 ns access latency. Use Value: SB48 ceramic DIP package withstands shock, humidity, and EMI in mobile battlefield platforms where plastic packages fail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1355KV18-35BGXI | 3.3V core, 18-bit bus width, 35 ns tRC, BGA package | Requires level translation for 5V systems; wider data path increases PCB routing complexity | Select only if migrating to 3.3V architecture and needing higher throughput per access |
| IDT71V3577S133PFGI | 3.3V supply, 133 MHz QDR interface, PLCC-100 package | Not pin-compatible; synchronous interface demands clock domain management | Choose for high-bandwidth streaming applications where burst-mode performance outweighs simplicity |
Compared with CY7C1355KV18-35BGXI and IDT71V3577S133PFGI, the 7134SA35J8 delivers proven 5V TTL interoperability, military-grade reliability in SB48 packaging, and true asynchronous dual-port flexibility-making it optimal for legacy and safety-critical systems where compatibility and deterministic timing are non-negotiable.
Availability
7134SA35J8 is available at Aetrix Electronics and suitable for radar signal processing, avionics data buffering, and secure communication modems requiring stable component supply across extended product lifecycles.
Supply support for 7134SA35J8 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 IDT7134 family was originally developed by Integrated Device Technology (acquired by Renesas in 2019) to serve high-reliability embedded systems requiring deterministic, arbitration-free dual-port memory with military-grade qualification.
FAQ
Does the 7134SA35J8 support battery backup data retention?
No, the 7134SA35J8 does not support battery backup data retention. That feature is exclusive to LA-series variants (e.g., 7134LA35CB), which specify VDR ≥ 2.0 V and ICCDR ≤ 4000 µA. The SA variant is optimized for standard power operation and lacks the low-voltage retention circuitry.
What is the maximum operating frequency implied by the 35 ns read cycle time of the 7134SA35J8?
The 35 ns read cycle time (tRC) of the 7134SA35J8 implies a maximum sustained read rate of approximately 28.57 MHz (1 / 35 ns). This is the minimum interval between successive read operations on the same port-not a clock frequency-and assumes ideal timing margins with no setup/hold violations.
Can the left and right ports of the 7134SA35J8 access the same memory location simultaneously?
Yes, the left and right ports of the 7134SA35J8 can access the same memory location simultaneously, but the device provides no internal arbitration. The user must implement external logic to prevent data corruption-such as disabling one port's write during the other's read-or accept potential bus contention per the truth table and functional description.
Which package type does the suffix 'J8' indicate for the 7134SA35J8?
The 'J8' suffix in 7134SA35J8 indicates tape-and-reel packaging for automated SMT placement. However, the base part 7134SA35J8 is physically identical to 7134SA35CB and uses the 48-pin sidebraze DIP (SB48) package-confirmed by ordering information tables and pin configuration diagrams in the Renesas datasheet.
Is the 7134SA35J8 compliant with RoHS or green manufacturing standards?
Yes, the 7134SA35J8 is a green part per Renesas' ordering information notes. Although leaded (SnPb) finishes are obsolete for most packages, the SB48 variant remains available with compliant finish options-verified in the "Green parts available" statement and footnote 2 of the Ordering Information section.
7134SA35J8 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)
7134SA35J8 FAQ
1.How can I place an order for 7134SA35J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA35J8 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 7134SA35J8 reliable?
The price and inventory of 7134SA35J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA35J8 is usually 5 days.
3.What payment methods are accepted for 7134SA35J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA35J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA35J8?
7134SA35J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA35J8 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 7134SA35J8?
For technical support, including 7134SA35J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA35J8 requirements.
6.How does Aetrix verify that 7134SA35J8 is sourced from the original manufacturer or authorized distributors?
All 7134SA35J8 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 7134SA35J8 meets industry standards.
7.What is the process for return or replacement of 7134SA35J8?
All 7134SA35J8 units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA35J8, 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 7134SA35J8 part is unused and in its original packaging.
Return procedure for 7134SA35J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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