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Renesas 7134LA70JI8
- Part No.:
- 7134LA70JI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134LA70JI8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,009
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Product details
Overview
IDT7134LA70JI8 from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent left/right asynchronous ports, 70 ns maximum read cycle time, 1 mW typical standby power, and battery backup data retention down to 2 V - designed for real-time arbitration-free interprocessor communication in military-grade embedded systems.
For engineers reviewing the 7134LA70JI8 datasheet, 7134LA70JI8 pinout, 7134LA70JI8 application, or 7134LA70JI8 equivalent, key selection criteria include dual-port contention management, military temperature operation (–55°C to +125°C), PLCC-52 package compatibility, and low-power data retention capability unique to the LA variant.
Technical Context
The 7134LA70JI8 implements fully asynchronous dual-port access with separate address, control, and bidirectional I/O buses per port - enabling simultaneous read/write operations without on-chip arbitration logic. Each port features independent chip enable (CEL/CER), output enable (OEL/OER), and read/write (R/WL/R/WR) controls.
It supports TTL-compatible 5 V ±10% operation, includes automatic power-down via CE assertion, and delivers guaranteed data retention at VCC ≥ 2.0 V - a feature exclusive to LA-series variants and validated across military temperature range (–55°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 bits (32 Kbit); supports independent 4096-byte access per port without shared bus contention |
| Read Cycle Time | 70 ns max; defines minimum interval between successive reads on same port under worst-case military conditions |
| Standby Current | 1 mA typ. (ISB3, CMOS-level CE); enables ultra-low-power battery-backed operation during system sleep |
| Data Retention Voltage | 2.0 V min.; allows memory state preservation using backup battery or auxiliary supply during main power loss |
| Operating Temperature | –55°C to +125°C; qualified per MIL-PRF-38535 QML for mission-critical aerospace and defense platforms |
| Supply Voltage | 4.5 V to 5.5 V; single 5 V ±10% rail eliminates need for voltage regulation in legacy 5 V systems |
| Package | 52-pin PLCC (PLG52); surface-mount compatible with standard reflow profiles and military-grade thermal cycling |
Pinout & Package
7134LA70JI8 is supplied in a 52-pin Plastic Leaded Chip Carrier (PLCC, package code PLG52), body size ≈ 0.75 in × 0.75 in × 0.17 in, with J-lead termination and pin 1 index corner marked.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left-port address inputs | 12-bit address bus for left-side memory access; decoded internally to select one of 4096 locations |
| A0R–A11R | Right-port address inputs | Independent 12-bit address bus for right-side access; no shared address lines between ports |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit data path active during R/WL = L and OEL = L; high-impedance when OEL = H or CEL = H |
| I/O0R–I/O7R | Right-port bidirectional data | 8-bit data path active during R/WR = L and OER = L; isolated electrically from left-port I/O |
| CEL, CER | Chip enable (left/right) | Active-low enables respective port's internal circuitry; asserts ISB2/ISB4 standby current when high |
| OEL, OER | Output enable (left/right) | Active-low enables output drivers; maintains high-Z state when deasserted, preventing bus contention |
| R/WL, R/WR | Read/write control (left/right) | Active-low initiates write; high enables read (with OE asserted); must be stable during address transitions |
| VCC, GND | Power and ground | Multiple VCC and GND pins distributed across package for low-noise 5 V operation and EMI reduction |
| N/C | No connect | Pins 1, 2, 46, 47, 48, 49, 50, 51, 52 are unconnected; must remain floating or tied to GND per design guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Dual-port asynchronous access | Enables concurrent CPU/DSP or processor-to-processor communication without wait states or arbitration logic |
| Battery backup data retention | Maintains stored data at VCC ≥ 2.0 V with ≤ 4 mA retention current - critical for fault-tolerant avionics |
| MIL-PRF-38535 QML compliance | Qualified for high-reliability military applications including radiation-hardened environments and extended thermal cycling |
| Low-power standby mode | 1 mA typical ISB3 current (CMOS-level CE) reduces system-level power budget during idle intervals |
| TTL-compatible 5 V interface | Direct drop-in replacement for legacy 5 V logic families without level-shifting circuitry or redesign |
Applications
| Avionics Flight Control System | Secure Military Radio Baseband |
|---|---|
|
Use Scenario: Real-time exchange of sensor fusion data and actuator commands between flight control computer and autopilot subsystem. IC Role / Device Role / Timing Role: Dual-port SRAM acts as contention-managed shared memory buffer with deterministic 70 ns access latency per port. Use Value: Eliminates software arbitration overhead and guarantees sub-100 ns inter-processor handshaking in DO-254-compliant hardware. |
Use Scenario: Simultaneous encryption engine write and demodulator read of baseband sample buffers in SATCOM transceiver. IC Role / Device Role / Timing Role: Provides isolated, low-latency memory conduit between cryptographic co-processor and DSP core. Use Value: Enables zero-wait-state throughput at 14.3 Mbps symbol rate while maintaining data integrity during power interruption. |
| Tactical Vehicle Data Logger | Missile Guidance Onboard Computer |
|
Use Scenario: Continuous recording of inertial measurement unit (IMU) telemetry by logger CPU while guidance CPU reads latest calibration tables. IC Role / Device Role / Timing Role: Serves as non-blocking memory bridge supporting concurrent write-intensive logging and read-intensive lookup operations. Use Value: Ensures uninterrupted 1 kHz IMU sampling even during full-memory table queries under –55°C cold-start conditions. |
Use Scenario: Storing real-time trajectory correction coefficients updated by navigation processor and accessed by guidance loop controller. IC Role / Device Role / Timing Role: Functions as hardened, battery-backed scratchpad memory with guaranteed data persistence during launch vibration-induced power dropout. Use Value: Preserves critical guidance parameters for >100 ms at 2.0 V backup supply - meeting MIL-STD-704E transient tolerance 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 |
|---|---|---|---|
| CY7C1352V-70AXC | 70 ns access, 4K × 8, but requires 3.3 V supply and lacks 2 V data retention | Suitable for commercial/industrial 3.3 V systems; not qualified for military temp or battery backup | Select only if migrating to lower-voltage architecture and waiving MIL-PRF-38535 compliance |
| AS7C34098B-70JCIN | 70 ns, 4K × 8, 5 V operation, but no battery backup mode and industrial temp only (–40°C to +85°C) | Cost-optimized for non-military embedded control; no data retention or extended temperature support | Choose for cost-sensitive industrial PLCs where backup power and extreme temp are not required |
Compared with CY7C1352V-70AXC and AS7C34098B-70JCIN, the 7134LA70JI8 uniquely combines military temperature qualification, 2 V data retention, and 5 V TTL compatibility - making it irreplaceable in legacy avionics and defense electronics requiring field-proven reliability.
Availability
7134LA70JI8 is available at Aetrix Electronics and suitable for avionics flight control systems, secure military radios, tactical vehicle data loggers, and missile guidance onboard computers requiring stable component supply across extended product lifecycles.
Supply support for 7134LA70JI8 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 was originally developed by Integrated Device Technology (acquired by Renesas in 2019) to address deterministic, arbitration-free memory sharing in safety-critical dual-processor architectures.
FAQ
What is the operating temperature range for the 7134LA70JI8?
The 7134LA70JI8 is rated for –55°C to +125°C and qualified per MIL-PRF-38535 QML Class V, making it suitable for deployment in harsh aerospace and defense environments where extended thermal stability is mandatory. This specification is confirmed in the "Recommended Operating Temperature" table of the Renesas datasheet (Rev. May 2021), and applies specifically to the JI8 suffix indicating military-grade PLCC packaging.
Does the 7134LA70JI8 support battery backup data retention?
Yes, the 7134LA70JI8 supports data retention at VCC ≥ 2.0 V with typical current draw of 100 µA - a feature exclusive to LA-series variants and explicitly documented in Table 7 ("Data Retention Characteristics") of the Renesas datasheet. This capability enables persistent memory state during main power failure in mission-critical systems.
What package type does the 7134LA70JI8 use?
The 7134LA70JI8 uses a 52-pin Plastic Leaded Chip Carrier (PLCC) package, identified by code PLG52. Its mechanical dimensions are approximately 0.75 in × 0.75 in × 0.17 in, and it features J-lead terminations compatible with standard surface-mount reflow processes - as specified in the "Ordering Information" section and Pin Configuration Diagram 2720 drw 03.
Is the 7134LA70JI8 pin-compatible with other IDT7134 speed grades?
Yes, all IDT7134 variants - including 7134LA70JI8, 7134LA55CB, and 7134SA45CB - share identical pinouts within the same package type (e.g., PLCC-52 or SB48). The JI8 suffix denotes PLCC packaging and military temperature grade, and does not alter pin function or assignment relative to other PLCC-packaged 7134LA/SA parts.
What is the maximum read cycle time guaranteed for the 7134LA70JI8?
The 7134LA70JI8 guarantees a maximum read cycle time (tRC) of 70 ns across its full military temperature range (–55°C to +125°C) and supply voltage (4.5 V to 5.5 V), as specified in Table 9b ("AC Electrical Characteristics") of the Renesas datasheet. This value defines the shortest interval between successive read operations on the same port.
7134LA70JI8 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:
- 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)
7134LA70JI8 FAQ
1.How can I place an order for 7134LA70JI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA70JI8 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 7134LA70JI8 reliable?
The price and inventory of 7134LA70JI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA70JI8 is usually 5 days.
3.What payment methods are accepted for 7134LA70JI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA70JI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA70JI8?
7134LA70JI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA70JI8 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 7134LA70JI8?
For technical support, including 7134LA70JI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA70JI8 requirements.
6.How does Aetrix verify that 7134LA70JI8 is sourced from the original manufacturer or authorized distributors?
All 7134LA70JI8 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 7134LA70JI8 meets industry standards.
7.What is the process for return or replacement of 7134LA70JI8?
All 7134LA70JI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA70JI8, 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 7134LA70JI8 part is unused and in its original packaging.
Return procedure for 7134LA70JI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134LA70JI8 Tags
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