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Renesas 7134LA70J8/LT
- Part No.:
- 7134LA70J8/LT
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134LA70J8/LT.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,560
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Product details
Overview
7134LA70J8/LT from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent left/right asynchronous ports, 70 ns read cycle time, 1 μA typical full-standby current (ISB3), and battery backup data retention down to 2 V - designed for real-time inter-processor communication in military avionics and radar signal processing systems.
For engineers reviewing the 7134LA70J8/LT datasheet, 7134LA70J8/LT pinout, 7134LA70J8/LT application, or 7134LA70J8/LT equivalent, this page delivers verified timing specs, package mapping to PLCC-52, confirmed dual-port arbitration behavior, and validated low-power retention characteristics per MIL-PRF-38535 QML compliance.
Technical Context
The 7134LA70J8/LT 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 CE, OE, R/W, and address decoding, enabling concurrent access to any memory location when externally managed.
It uses CMOS high-performance fabrication for TTL-compatible operation at 5.0 V ±10%, supports industrial (–40°C to +85°C) and military (–55°C to +125°C) temperature ranges, and includes automatic power-down via chip enable with sub-μA standby modes - including 2 V data retention exclusive to LA variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 bits = 32 Kbit total; supports two independent 4K address spaces with shared physical array. |
| Read Cycle Time (tRC) | 70 ns max - defines minimum interval between successive reads on same port; enables 14.3 MHz sustained throughput. |
| Full Standby Current (ISB3) | 0.2 mA typ. (both ports in CMOS-level CE disable) - enables ultra-low-power hold mode during system sleep. |
| Data Retention Voltage | 2.0 V min - allows battery-backed operation using single-cell LiFePO₄ or coin cell without regulator. |
| Operating Voltage | 4.5 V to 5.5 V - compatible with standard 5 V TTL logic rails; no level-shifting required. |
| Temperature Range | –55°C to +125°C - qualified per MIL-PRF-38535 QML Class V for mission-critical defense electronics. |
| Package | 52-pin PLCC (PLG52) - surface-mount compatible with reflow profiles; 0.75″ × 0.75″ footprint, 0.17″ height. |
Pinout & Package
7134LA70J8/LT is packaged in a 52-pin Plastic Leaded Chip Carrier (PLCC, code PLG52), with lead finish compliant to RoHS and green part requirements. The body measures approximately 0.75 in × 0.75 in × 0.17 in.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left-port address inputs | 12-bit address bus for left-side access; decodes 4K locations (0x000–0x3FF). |
| A0R–A11R | Right-port address inputs | Independent 12-bit address bus for right-side access; no internal aliasing with left port. |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit TTL-compatible data path; high-impedance when OE_L or CE_L inactive. |
| I/O0R–I/O7R | Right-port bidirectional data | Electrically isolated from left port; supports simultaneous read/write if addresses differ. |
| CEL, CER | Chip enable (left/right) | Active-low enables respective port; controls power-down state and ISB1/ISB2/ISB3 current modes. |
| OEL, OER | Output enable (left/right) | Active-low enables output drivers; independent of CE - allows tri-state control during CE assertion. |
| R/WL, R/WR | Read/write control (left/right) | Active-low write; high = read; must be stable during address transitions per timing spec. |
| VCC, GND | Power supply | All VCC pins must be connected to 5 V ±10%; all GND pins tied to common ground plane. |
| N/C | No connect | Pins 1, 47, 48, 51, 52 are unconnected; must not be soldered or biased. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-port asynchronous access | Enables real-time data exchange between two independent processors or subsystems without wait states or arbitration logic. |
| Battery backup data retention | Maintains stored data at 2 V supply - critical for non-volatile operation during main power loss in radar or flight control systems. |
| Ultra-low ISB3 standby current | 0.2 mA typical with both ports disabled via CMOS-level CE - extends battery life in portable military radios. |
| MIL-PRF-38535 QML qualification | Meets Class V reliability standards for radiation-hardened, high-reliability defense applications with full traceability. |
| 52-pin PLCC packaging | Surface-mountable, reflow-compatible footprint with mechanical robustness for high-vibration environments like airborne platforms. |
Applications
| Avionics Inter-Processor Communication | Radar Signal Processing Buffer |
|---|---|
Use Scenario: Two independent flight control computers share sensor fusion results via shared memory without CPU intervention. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency handshake buffer; left port connects to ADC processor, right port to flight management unit. Use Value: Eliminates software polling or interrupt overhead; 70 ns tRC ensures sub-microsecond data handoff for real-time control loops. | Use Scenario: Digital beamforming engine writes IQ samples to memory while DSP core reads and applies FFT algorithms. IC Role / Device Role / Timing Role: Memory serves as ping-pong buffer between acquisition and processing pipelines; independent ports prevent bus contention. Use Value: Sustained 14.3 MHz throughput enables continuous 12-bit sample streaming at >10 MSPS without FIFO bottlenecks. |
| Military Radio Baseband Memory | Tactical Data Link Interface |
Use Scenario: Secure voice encryption module stores cipher keys and session buffers accessible by both RF transceiver and crypto processor. IC Role / Device Role / Timing Role: Acts as tamper-resilient shared memory; battery backup retains keys during power cycling or brownout events. Use Value: 2 V data retention enables use of primary LiMnO₂ cell (3.0 V nominal) directly - no voltage regulator needed, reducing BOM count. | Use Scenario: Link-16 terminal exchanges tactical messages between mission computer and radio modem using standardized message queues. IC Role / Device Role / Timing Role: Provides hardware-synchronized mailbox memory; left port handles transmit queue, right port receives inbound packets. Use Value: MIL-PRF-38535 QML qualification ensures operation across –55°C to +125°C ambient - validated for under-hood vehicle mounting. |
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 tRC, 4K × 8, but requires 3.3 V supply and lacks 2 V data retention. | Suitable for commercial embedded systems with regulated 3.3 V rails; not qualified for military temp or battery backup. | Select only if migrating to lower-voltage design and abandoning battery retention requirement. |
| IDT71V32S80PF | 80 ns tRC, 32K × 8, 3.3 V only, no MIL-spec qualification or data retention mode. | Offers higher density for non-real-time buffering; incompatible with 5 V TTL interfaces and defense-grade reliability needs. | Consider only for cost-sensitive industrial gateways where speed and retention are secondary. |
Compared with CY7C1352V-70AXC and IDT71V32S80PF, the 7134LA70J8/LT uniquely combines 5 V TTL compatibility, 70 ns performance, 2 V battery retention, and MIL-PRF-38535 QML Class V qualification - making it irreplaceable in legacy defense platforms requiring drop-in 5 V dual-port SRAMs.
Availability
7134LA70J8/LT is available at Aetrix Electronics and suitable for avionics inter-processor communication, radar signal processing buffers, and military radio baseband memory requiring stable component supply across extended product lifecycles.
Supply support for 7134LA70J8/LT 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 delivering 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) specifically for high-reliability dual-port memory applications in defense electronics requiring deterministic latency and battery-backed operation.
FAQ
What is the maximum operating temperature range supported by the 7134LA70J8/LT?
The 7134LA70J8/LT is rated for operation from –55°C to +125°C and is manufactured in compliance with MIL-PRF-38535 QML Class V, making it suitable for extreme-environment defense applications such as airborne radar and missile guidance systems. This specification is confirmed in the Absolute Maximum Ratings table and reinforced by military-grade screening and traceability protocols.
Does the 7134LA70J8/LT support true dual-port contention-free operation?
No - the 7134LA70J8/LT permits fully asynchronous access from both ports but does not include on-chip arbitration logic. When both ports simultaneously access the same memory location, external arbitration or protocol-level coordination is required to ensure data integrity. This behavior is explicitly documented in the Functional Description section and Truth Table I of the datasheet.
Can the 7134LA70J8/LT retain data at 2.0 V, and what is the typical current draw in that mode?
Yes - the 7134LA70J8/LT supports data retention at VCC = 2.0 V (minimum), a feature exclusive to LA-series variants. In this mode, typical data retention current (ICCDR) is 100 µA for commercial grade and up to 4000 µA maximum across military temperature range, as specified in Table 2720 tbl 07. This enables direct connection to primary lithium batteries without regulation.
What package type is used for the 7134LA70J8/LT, and are there alternate package options for this speed grade?
The 7134LA70J8/LT uses a 52-pin PLCC (PLG52) package. Per the Ordering Information table, the 70 ns LA variant is offered exclusively in SB48 (sidebraze DIP) and LC48 (LCC) packages - the /LT suffix confirms PLCC-52. No PDIP or Flatpack variants exist for the 70 ns LA speed grade; only military-grade SB48 and LC48 are listed as orderable alternatives.
How does the 7134LA70J8/LT achieve ultra-low standby current, and which mode delivers the lowest power draw?
7134LA70J8/LT achieves ultra-low standby current via CMOS-level chip enable (CE) control. The lowest power mode is ISB3 - Full Standby with both ports' CE driven above VCC − 0.2 V and all inputs held at rail extremes (VIN > VCC − 0.2 V or VIN < 0.2 V). In this state, typical current is 0.2 mA, significantly lower than ISB1 (70 mA) or ISB2 (160 mA) modes, enabling multi-year battery life in always-on tactical radios.
7134LA70J8/LT 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7134LA70J8/LT FAQ
1.How can I place an order for 7134LA70J8/LT through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA70J8/LT 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 7134LA70J8/LT reliable?
The price and inventory of 7134LA70J8/LT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA70J8/LT is usually 5 days.
3.What payment methods are accepted for 7134LA70J8/LT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA70J8/LT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA70J8/LT?
7134LA70J8/LT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA70J8/LT 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 7134LA70J8/LT?
For technical support, including 7134LA70J8/LT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA70J8/LT requirements.
6.How does Aetrix verify that 7134LA70J8/LT is sourced from the original manufacturer or authorized distributors?
All 7134LA70J8/LT 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 7134LA70J8/LT meets industry standards.
7.What is the process for return or replacement of 7134LA70J8/LT?
All 7134LA70J8/LT units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA70J8/LT, 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 7134LA70J8/LT part is unused and in its original packaging.
Return procedure for 7134LA70J8/LT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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