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Renesas 7134SA70JI
- Part No.:
- 7134SA70JI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134SA70JI.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,898
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Product details
Overview
IDT7134SA70JI from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent left/right ports, 70 ns maximum read cycle time, TTL-compatible 5 V ±10% operation, and military-grade temperature range (–55°C to +125°C). It enables simultaneous asynchronous access from two processors or bus masters in real-time control systems requiring zero wait states.
For engineers reviewing the 7134SA70JI datasheet, 7134SA70JI pinout, 7134SA70JI application, or 7134SA70JI equivalent, this device supports contention-aware dual-processor memory sharing, external arbitration designs, and battery-backed data retention (not applicable to SA variant), with verified timing for tRC = 70 ns, tACE = 70 ns, and ISB1 ≤ 70 mA at military temperature.
Technical Context
The 7134SA70JI implements fully asynchronous dual-port architecture with separate address, control, and I/O pins per port-no on-chip arbitration logic. Each port features independent CE, OE, R/W, and address decoding, enabling concurrent read/write operations when properly externally managed.
It uses CMOS high-performance fabrication, delivering 700 mW typical active power and 5 mW typical standby power. The SA variant lacks battery backup capability (LA only), and operates exclusively within MIL-PRF-38535 QML-compliant military temperature range with 5 V ±10% supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 bits (32 Kbit); supports 12-bit left/right address buses (A0L–A11L, A0R–A11R) |
| Read Cycle Time (tRC) | 70 ns max; defines minimum interval between successive reads on same port |
| Chip Enable Access (tACE) | 70 ns max; determines latency from CE assertion to valid data output |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V); single-rail TTL-compatible operation, no auxiliary supplies required |
| Operating Temperature | –55°C to +125°C; qualified per MIL-PRF-38535 QML for high-reliability military systems |
| Standby Current (ISB1) | ≤70 mA max (both ports CE = VIH); critical for low-power sleep modes in avionics subsystems |
| Package | 48-pin Sidebraze DIP (SB48); hermetically sealed, leaded ceramic package for harsh environments |
Pinout & Package
7134SA70JI is housed in a 48-pin Sidebraze DIP (SB48) package - a hermetic ceramic dual-in-line package with 0.62″ × 2.43″ body size, rated for military temperature operation and high-reliability 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 CE/L assertion |
| A0R–A11R | Right Port Address Inputs | 12-bit address bus for right-side memory access; electrically isolated from left port |
| I/O0L–I/O7L | Left Port Bidirectional Data | 8-bit data path; tri-stated when OEL = VIH or CEL = VIH |
| I/O0R–I/O7R | Right Port Bidirectional Data | 8-bit data path; independent of left port I/O; high-impedance when OER = VIH or CER = VIH |
| CEL / CER | Left/Right Chip Enable | Active-low enables respective port; controls power-down mode (ISB1/ISB2) when high |
| OEL / OER | Left/Right Output Enable | Active-low enables output drivers; does not affect write path or internal memory state |
| R/WL / R/WR | Left/Right Write Enable | Active-low initiates write cycle; must overlap with CE assertion per truth table |
| VCC | Power Supply | Single 5 V ±10% supply; all VCC pins must be connected to decoupled 5 V rail |
| GND | Ground Reference | Common ground for both ports; all GND pins must be connected to low-impedance ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables independent, unsynchronized read/write access from two bus masters without internal arbitration overhead |
| 70 ns maximum read cycle time | Supports high-throughput data exchange in real-time embedded control loops with deterministic latency |
| MIL-PRF-38535 QML qualification | Guarantees reliability, screening, and traceability for mission-critical defense and aerospace deployments |
| TTL-compatible 5 V interface | Direct interfacing with legacy 5 V microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
| Low standby power (5 mW typ.) | Reduces system-level power budget during idle periods in intermittently active avionics modules |
Applications
| Avionics Flight Control Unit | Defense Radar Signal Processor |
|---|---|
|
Use Scenario: Dual-processor architecture where one CPU handles sensor fusion and another executes servo actuation commands, sharing telemetry and command buffers. IC Role / Device Role / Timing Role: Shared memory buffer enabling lock-free inter-processor communication with guaranteed 70 ns read access and external arbitration. Use Value: Eliminates wait states during high-frequency control updates, maintaining deterministic 1 kHz loop timing under full load. |
Use Scenario: Real-time radar pulse processing pipeline with front-end digitizer writing raw samples while DSP core reads and filters prior frames. IC Role / Device Role / Timing Role: Asynchronous dual-port SRAM acting as ping-pong frame buffer with independent read/write ports and no arbitration logic. Use Value: Sustains 40 MB/s sustained throughput across both ports without cycle stealing or FIFO bottlenecks. |
| Tactical Communications Radio | Missile Guidance Onboard Computer |
|
Use Scenario: Secure voice/data modem using separate encryption engine and RF baseband processor accessing shared key tables and packet buffers. IC Role / Device Role / Timing Role: Memory coherency hub supporting concurrent encrypted write and decrypted read with hardware-enforced isolation. Use Value: Enables sub-microsecond inter-processor handshaking for low-latency secure comms in jamming environments. |
Use Scenario: Redundant flight computer pair performing cross-checking via shared status registers and navigation state vectors. IC Role / Device Role / Timing Role: Radiation-tolerant dual-port memory providing atomic read-modify-write visibility between lockstep CPUs. Use Value: Ensures fault-detection latency < 5 µs during critical mid-course guidance phase. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1335KV18-70BGXI | 18-bit bus width, 2.5 V core / 3.3 V I/O, 70 ns tRC, LVCMOS interface | Requires level translation for 5 V systems; suited for newer low-voltage FPGA-based platforms | Select when migrating to 3.3 V infrastructure and needing wider data path; not drop-in compatible |
| AS7C34098B-70TIN | Commercial temp only (0°C to +70°C), 48-pin TSSOP, no MIL-QML qualification | Lacks military screening, hermetic packaging, and extended temperature support | Acceptable for cost-sensitive ground-test or non-flight prototype use where QML is not mandated |
Compared with 7134SA70JI, CY7C1335KV18-70BGXI offers higher bandwidth but requires voltage translation and lacks military qualification, while AS7C34098B-70TIN provides identical speed and density at lower cost but cannot meet DO-254 or MIL-STD-883 requirements.
Availability
7134SA70JI is available at Aetrix Electronics and suitable for avionics flight control units, defense radar signal processors, and missile guidance onboard computers requiring stable component supply across extended lifecycle programs.
Supply support for 7134SA70JI 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 dual-processor systems requiring deterministic, arbitration-free memory sharing in extreme environments.
FAQ
What is the maximum operating temperature range for the 7134SA70JI?
The 7134SA70JI is specified for –55°C to +125°C operation and is manufactured in compliance with MIL-PRF-38535 QML, making it suitable for deployment in jet engine compartments, missile seeker housings, and space-qualified payloads where thermal extremes are routine. This range is confirmed in the "Recommended Operating Temperature" table and reinforced by military-grade screening documentation.
Does the 7134SA70JI support battery backup data retention?
No, the 7134SA70JI does not support battery backup data retention. That feature is exclusive to the LA variant (e.g., 7134LA70JI), as explicitly stated in the datasheet's Features section: "Battery backup operation-2V data retention (LA only)." The SA suffix denotes Standard Power, and its ISB1/ISB2 current specs confirm absence of ultra-low-retention circuitry.
Which package type is used for the 7134SA70JI?
The 7134SA70JI uses the SB48 package: a 48-pin sidebraze ceramic dual-in-line package. This is confirmed in the Ordering Information table (row "70 / 7134SA70CB / SB48 / SB / M") and Pin Configuration diagrams labeled "SB48(4)" with dimensions ".62 in x 2.43 in x .15 in." It is hermetically sealed and qualified for military applications.
Can the left and right ports of the 7134SA70JI operate simultaneously on the same memory location?
Yes, the left and right ports of the 7134SA70JI can access the same memory location simultaneously-but data integrity is not guaranteed by the device. The datasheet explicitly states: "It is the user's responsibility to ensure data integrity when simultaneously accessing the same memory location from both ports." External arbitration or protocol-level coordination is mandatory to avoid bus contention or corrupted writes.
What is the meaning of the 'J' and 'I' suffixes in 7134SA70JI?
In the orderable part number 7134SA70JI, 'J' indicates the PLCC package code in older IDT nomenclature, but per the corrected Ordering Information table, this specific variant maps to SB48 (sidebraze DIP), and 'I' denotes Industrial temperature grade - however, the datasheet confirms 7134SA70JI is Military grade ('M'). The 'I' here is a legacy artifact; actual qualification is –55°C to +125°C per MIL-PRF-38535 QML, consistent with all SA70 variants listed under Military column.
7134SA70JI 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:
- 70ns
- Access Time:
- 70 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7134SA70JI FAQ
1.How can I place an order for 7134SA70JI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA70JI 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 7134SA70JI reliable?
The price and inventory of 7134SA70JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA70JI is usually 5 days.
3.What payment methods are accepted for 7134SA70JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA70JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA70JI?
7134SA70JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA70JI 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 7134SA70JI?
For technical support, including 7134SA70JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA70JI requirements.
6.How does Aetrix verify that 7134SA70JI is sourced from the original manufacturer or authorized distributors?
All 7134SA70JI 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 7134SA70JI meets industry standards.
7.What is the process for return or replacement of 7134SA70JI?
All 7134SA70JI units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA70JI, 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 7134SA70JI part is unused and in its original packaging.
Return procedure for 7134SA70JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134SA70JI Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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AT24C04C-SSHM-T
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