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Renesas 7134LA45J
- Part No.:
- 7134LA45J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134LA45J.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,349
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Product details
Overview
IDT7134LA45J from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent left/right asynchronous ports, 45 ns read cycle time (max), 2V data retention capability (LA only), and TTL-compatible 5V ±10% operation - used in real-time inter-processor communication, video frame buffers, and military-grade avionics arbitration systems.
For engineers reviewing the IDT7134LA45J datasheet, IDT7134LA45J pinout, IDT7134LA45J application, or IDT7134LA45J equivalent, key selection criteria include dual-port contention management, battery-backed data retention at 2V, industrial/military temperature support (–55°C to +125°C), and compatibility with 48-pin SB48 sidebraze DIP packaging.
Technical Context
The IDT7134LA45J implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port - enabling simultaneous read/write access 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 automatic power-down via CE-driven standby modes: ISB1 (TTL-level inputs, 70 mA max), ISB3 (CMOS-level inputs, 4.0 mA max), and full data retention at VCC = 2V (LA-specific). Fabricated in CMOS, it delivers 700 mW typical active power and 1 mW typical standby power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 bits (32 Kbit); supports two independent 4K address spaces for concurrent access. |
| Read Cycle Time | 45 ns (max); defines minimum interval between successive reads on same port - critical for real-time FIFO throughput. |
| Data Retention Voltage | 2.0 V (min); enables battery backup operation with external 2V source - preserves memory contents during main power loss. |
| Supply Voltage | 4.5 V to 5.5 V; single 5V ±10% rail eliminates need for auxiliary voltage regulation in legacy 5V systems. |
| Operating Temperature | –55°C to +125°C; qualified to MIL-PRF-38535 QML for sustained reliability in aerospace and defense platforms. |
| Standby Current | 4.0 mA (max, ISB3 mode); ultra-low CMOS-level standby draw enables long-term battery hold without rapid drain. |
| Package | 48-pin SB48 sidebraze ceramic DIP; hermetically sealed, leaded package suitable for high-reliability military PCB assembly. |
Pinout & Package
Package: 48-pin SB48 sidebraze ceramic dual-in-line package (DIP), body dimensions ≈ 0.62 in × 2.43 in × 0.15 in, RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left-port address inputs | 12-bit address bus for left-side memory access; supports full 4K addressing (0–4095). |
| 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 parallel data path; direction controlled by R/WL and OEL - no external transceivers required. |
| I/O0R–I/O7R | Right-port bidirectional data | Electrically isolated 8-bit data bus; enables true simultaneous read/write across ports. |
| CEL, CER | Chip enable (left/right) | Active-low enables respective port; when high, port enters low-power standby (ISB2/ISB4). |
| OEL, OER | Output enable (left/right) | Active-low enables output drivers; allows high-impedance tri-state control per port independent of CE. |
| R/WL, R/WR | Read/write control (left/right) | Active-low write signal; when high and OE low, enables read - no internal direction register needed. |
| VCC, GND | Power and ground | All VCC pins must be decoupled locally; all GND pins require low-inductance return paths to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-port arbitration-free operation | Eliminates need for external semaphore logic - simplifies PCB layout and reduces system latency in tightly coupled processors. |
| Battery backup data retention | Maintains stored data at 2V supply - enables seamless failover in mission-critical systems with backup batteries or supercaps. |
| TTL-compatible interface | Direct connection to legacy 5V microcontrollers and FPGAs without level-shifting circuitry or voltage translators. |
| MIL-PRF-38535 QML qualification | Meets stringent military screening, burn-in, and lot traceability requirements - certified for flight-critical hardware use. |
| Multiple package options | SB48 sidebraze DIP selected for this variant - provides superior thermal stability and hermetic sealing vs. plastic packages. |
Applications
| Avionics Data Buffering | Real-Time Inter-Processor Communication |
|---|---|
|
Use Scenario: Storing sensor fusion outputs and navigation state vectors between flight control and guidance processors in UAVs. IC Role / Device Role / Timing Role: Dual-port SRAM acts as a zero-wait-state shared memory buffer - left port writes telemetry from ADC subsystem, right port reads by flight controller MCU. Use Value: Enables deterministic 45 ns read access and simultaneous write without arbitration overhead - critical for sub-millisecond control loop timing. |
Use Scenario: Coordinating command handoff between redundant safety-critical CPUs in railway signaling systems. IC Role / Device Role / Timing Role: Serves as contention-managed shared memory where both CPUs monitor and update status flags and command queues. Use Value: Supports guaranteed 2V data retention during primary power interruption - maintains system state integrity during brownout recovery. |
| Military Radar Frame Memory | Industrial Motion Controller Buffer |
|
Use Scenario: Capturing and buffering digitized RF echo samples in phased-array radar front-ends before DSP processing. IC Role / Device Role / Timing Role: Left port receives high-speed ADC stream; right port feeds FFT engine - independent clocks and timing domains. Use Value: 48-pin SB48 package withstands thermal cycling and vibration in airborne radomes; –55°C to +125°C rating ensures operation at altitude. |
Use Scenario: Holding interpolated motion profiles and encoder feedback in CNC machine controllers with dual-axis synchronization. IC Role / Device Role / Timing Role: Acts as dual-access scratchpad - PLC writes trajectory data to left port; servo driver reads via right port with precise timing alignment. Use Value: Eliminates software-based semaphores and reduces jitter in position-loop updates - improves contouring accuracy in multi-axis machining. |
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-45AXI | 45 ns access, 4K × 8, but uses 3.3V core with 5V-tolerant I/O; no 2V data retention. | Suitable for commercial/industrial 3.3V systems; not qualified for military temp or battery backup. | Select if migrating to lower-voltage design with existing 5V peripheral interfaces. |
| IDT7133LA45J | Same 4K × 8, 45 ns, LA-series, but single-port architecture with separate I/O and address pins - no dual-port concurrency. | Used where memory sharing is handled externally (e.g., via bus arbiter), not direct port-to-port access. | Choose only if dual-port functionality is unnecessary and board space favors simpler single-port layout. |
Compared with CY7C1352V-45AXI and IDT7133LA45J, the IDT7134LA45J uniquely combines military-grade temperature range, 2V data retention, and true dual-port concurrency - making it irreplaceable in applications requiring simultaneous, arbitration-free access under extreme environmental conditions.
Availability
IDT7134LA45J is available at Aetrix Electronics and suitable for avionics data buffering, real-time inter-processor communication, and military radar frame memory requiring stable component supply across extended lifecycle programs.
Supply support for IDT7134LA45J 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 IDT7134LA45J belongs to Renesas' legacy dual-port SRAM product line - engineered specifically for high-reliability, zero-wait-state memory sharing in safety-critical embedded systems demanding MIL-qualified components.
FAQ
What is the maximum operating temperature range for the IDT7134LA45J?
The IDT7134LA45J is rated for –55°C to +125°C operation and complies with MIL-PRF-38535 QML specifications. This military-grade temperature range ensures reliable performance in avionics, missile guidance, and other harsh-environment applications where thermal extremes are routine. The IDT7134LA45J maintains full 45 ns read cycle timing and 2V data retention capability across this entire range.
Does the IDT7134LA45J support true simultaneous read/write between ports?
Yes - the IDT7134LA45J allows fully independent, asynchronous access from left and right ports. However, simultaneous access to the same memory location requires external arbitration to prevent data corruption. The IDT7134LA45J provides no on-chip arbitration logic; users must implement external semaphores or timing discipline to ensure data integrity during contention.
What package type is used for the IDT7134LA45J?
The IDT7134LA45J is supplied in a 48-pin SB48 sidebraze ceramic dual-in-line package. This hermetically sealed, leaded package meets military reliability standards and offers superior thermal and mechanical stability compared to plastic DIP or PLCC variants - essential for high-vibration or high-altitude deployment scenarios.
Can the IDT7134LA45J retain data during main power loss?
Yes - the "LA" suffix denotes low-power capability including 2V data retention. When VCC drops to ≥2.0 V, the IDT7134LA45J maintains stored memory contents using an external backup source (e.g., coin cell or supercapacitor). This feature is exclusive to LA versions and is not available in SA-series parts like IDT7134SA45J.
Is the IDT7134LA45J pin-compatible with other speed grades in the same family?
Yes - all IDT7134LA variants (e.g., IDT7134LA20J, IDT7134LA25J, IDT7134LA45J) share identical pinouts and package footprints within the same package type (e.g., SB48). This allows drop-in replacement for timing optimization or qualification retesting without PCB redesign - provided the target speed grade meets system timing margins.
7134LA45J 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:
- 45ns
- Access Time:
- 45 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)
7134LA45J FAQ
1.How can I place an order for 7134LA45J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA45J 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 7134LA45J reliable?
The price and inventory of 7134LA45J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA45J is usually 5 days.
3.What payment methods are accepted for 7134LA45J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA45J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA45J?
7134LA45J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA45J 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 7134LA45J?
For technical support, including 7134LA45J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA45J requirements.
6.How does Aetrix verify that 7134LA45J is sourced from the original manufacturer or authorized distributors?
All 7134LA45J 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 7134LA45J meets industry standards.
7.What is the process for return or replacement of 7134LA45J?
All 7134LA45J units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA45J, 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 7134LA45J part is unused and in its original packaging.
Return procedure for 7134LA45J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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