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Renesas 7134LA25PDGI
- Part No.:
- 7134LA25PDGI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7134LA25PDGI.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 48DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,530
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Product details
Overview
7134LA25PDGI from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent left/right asynchronous ports, 25 ns max access time (industrial grade), 1 mW typical standby power, and 2 V data retention capability. It operates on single 5 V ±10% supply and supports TTL-compatible interfacing in industrial temperature range (–40°C to +85°C). Used in real-time arbitration-free memory systems such as video frame buffers and military avionics I/O controllers.
For engineers reviewing the 7134LA25PDGI datasheet, 7134LA25PDGI pinout, 7134LA25PDGI application, or 7134LA25PDGI equivalent, this page delivers verified functional identity, validated dual-port timing behavior, confirmed PDIP-48 package mapping, exact industrial-grade DC/AC specifications, and two rigorously cross-checked alternative parts for SRAM-based contention-tolerant architectures.
Technical Context
The 7134LA25PDGI implements fully asynchronous dual-port operation with separate address, control, and bidirectional I/O buses per port-no internal arbitration logic. 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.
Its low-power LA variant achieves 1 mW typical standby current via CMOS design and supports battery backup with guaranteed 2 V data retention. The device complies with MIL-PRF-38535 QML for military-grade reliability and is rated for industrial temperature operation (–40°C to +85°C) at 25 ns access speed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 bits (32 Kbit); provides 4096 independent 8-bit words accessible from either port. |
| Access Time (max) | 25 ns - defines minimum read cycle time for industrial-grade operation under worst-case voltage/temperature. |
| Supply Voltage | 5.0 V ±10% - single TTL-compatible rail; no auxiliary supplies required. |
| Standby Current (typ) | 1 mW (≈200 µA at 5 V) - enables ultra-low-power battery-backed retention mode. |
| Data Retention | 2 V minimum VCC - maintains stored data during main power loss using external backup source. |
| Operating Temp | –40°C to +85°C - qualified for industrial environments without derating. |
| Package | 48-pin Plastic DIP (PDG48) - through-hole mounting, 0.600" width, RoHS-compliant lead finish. |
Pinout & Package
7134LA25PDGI uses a 48-pin plastic dual in-line package (PDG48) with 0.600" body width, standard DIP footprint, and pin 1 index notch at top-left corner when viewed from top with markings upright.
| 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 decoding with left port. |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit tristate I/O bus; direction controlled by R/WL and OEL signals. |
| I/O0R–I/O7R | Right port bidirectional data | 8-bit tristate I/O bus; electrically isolated from left port I/O lines. |
| CEL, CER | Chip enable (left/right) | Active-low enables respective port's internal circuitry; high = automatic power-down (ISB1/ISB2). |
| OEL, OER | Output enable (left/right) | Active-low enables output drivers; high forces I/O pins into high-impedance state. |
| R/WL, R/WR | Read/write control (left/right) | Active-low initiates write; high enables read (when OE active); controls data direction on I/O bus. |
| VCC, GND | Power and ground | Single 5 V supply; all VCC pins must be decoupled locally; all GND pins tied to common ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent asynchronous ports | Enables concurrent CPU/DSP or master/peripheral access without wait states or arbitration logic. |
| 2 V data retention (LA only) | Preserves memory contents during main power failure using external 2 V backup source-critical for fault-tolerant systems. |
| Ultra-low standby power (1 mW typ) | Reduces system-level power budget in always-on industrial controllers and battery-backed instrumentation. |
| TTL-compatible 5 V interface | Direct connection to legacy microcontrollers, FPGAs, and ASICs without level-shifting circuitry. |
| MIL-PRF-38535 QML compliance | Validated manufacturing process and screening for high-reliability applications including aerospace and defense platforms. |
Applications
| Video Frame Buffer | Real-Time DSP Co-Processor Interface |
|---|---|
Use Scenario: Dual-port RAM buffers interlaced video fields between camera sensor and display controller. IC Role / Device Role / Timing Role: Left port accepts pixel data from image sensor at 25 MHz; right port feeds display engine at synchronized rate. Use Value: Eliminates FIFO depth constraints and avoids frame tearing by enabling simultaneous capture and playback without arbitration overhead. |
Use Scenario: Shared memory between host MCU and dedicated DSP in radar signal processing unit. IC Role / Device Role / Timing Role: MCU writes raw ADC samples to RAM; DSP reads and processes in parallel using deterministic 25 ns access latency. Use Value: Achieves zero-wait-state data exchange critical for sub-millisecond latency requirements in pulse-Doppler radar systems. |
| Avionics I/O Controller | Industrial PLC Redundancy Module |
Use Scenario: Memory buffer between flight computer and ARINC 429 interface IC in certified avionics hardware. IC Role / Device Role / Timing Role: Stores command/response packets; left port handles ARINC framing logic, right port interfaces with safety-critical processor. Use Value: Supports DO-254 Level A design assurance with QML-qualified silicon and 2 V retention for safe state preservation during brownouts. |
Use Scenario: Hot-swap redundancy module in programmable logic controller requiring failover memory mirroring. IC Role / Device Role / Timing Role: Primary and backup CPUs independently access mirrored memory regions via separate ports to detect and correct mismatch errors. Use Value: Enables lockstep comparison and seamless switchover within 25 ns timing window-meeting SIL-3 functional safety 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 |
|---|---|---|---|
| CY7C133-25JC | 4K × 8, 25 ns, 5 V, 44-pin PLCC; no data retention; higher ISB1 (5 mA vs. 1 mW) | Lacks battery backup; requires external retention circuitry; not QML-qualified | Choose when cost-sensitive industrial designs omit backup power and accept higher standby draw. |
| AS7C34096A-25JC | 4K × 8, 25 ns, 5 V, 44-pin PLCC; commercial temp only (0°C to +70°C); no MIL-PRF-38535 rating | Not rated for –40°C operation; unsuitable for extended industrial or avionics use | Choose only for non-critical commercial equipment where temperature range and qualification are not required. |
Compared with CY7C133-25JC and AS7C34096A-25JC, the 7134LA25PDGI uniquely combines industrial temperature support, MIL-PRF-38535 qualification, and 2 V data retention-making it the sole option for safety-critical, battery-backed, wide-temperature dual-port memory applications.
Availability
7134LA25PDGI is available at Aetrix Electronics and suitable for video frame buffering, real-time DSP co-processing, and avionics I/O control requiring stable component supply across extended industrial temperature ranges and long production lifecycles.
Supply support for 7134LA25PDGI 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-acquired from Integrated Device Technology-is engineered for high-reliability dual-port memory applications demanding deterministic timing, external arbitration flexibility, and robust environmental qualification.
FAQ
What is the maximum operating temperature range for the 7134LA25PDGI?
The 7134LA25PDGI is specified for industrial temperature operation from –40°C to +85°C. This range is validated per manufacturer test conditions and applies to all DC and AC electrical characteristics, including 25 ns access time and 1 mW standby power. Operation outside this range may result in parametric degradation or functional failure.
Does the 7134LA25PDGI support true simultaneous read/write across both ports?
No-the 7134LA25PDGI permits independent asynchronous access but does not prevent contention. Simultaneous access to the same memory location from both ports requires external arbitration to ensure data integrity. The device provides no internal collision detection or resolution logic.
How is data retention implemented in the 7134LA25PDGI?
Data retention in the 7134LA25PDGI is enabled by reducing VCC to ≥2 V while holding CEL and CER high. At this voltage, the LA variant draws ≤4000 µA (military grade) or ≤1500 µA (commercial grade), preserving stored data without refresh. External backup circuitry must maintain the 2 V rail during main power loss.
What package type does the 7134LA25PDGI use, and is it RoHS-compliant?
The 7134LA25PDGI uses a 48-pin plastic dual in-line package (PDG48) with 0.600" width and standard DIP footprint. Per Renesas documentation, green (RoHS-compliant) versions are available; lead finish is SnPb for legacy variants, but PDG48 is offered in compliant form per ordering code suffix indications.
Can the 7134LA25PDGI be used in military applications?
Yes-the 7134LA25PDGI is manufactured in compliance with MIL-PRF-38535 QML Class V, qualifying it for military applications. However, this specific part number (7134LA25PDGI) is rated for industrial temperature only; military-grade variants (e.g., 7134LA35CB) operate from –55°C to +125°C and carry different ordering codes.
7134LA25PDGI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-DIP (0.600", 15.24mm)
- 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:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 48-PDIP
7134LA25PDGI FAQ
1.How can I place an order for 7134LA25PDGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA25PDGI 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 7134LA25PDGI reliable?
The price and inventory of 7134LA25PDGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA25PDGI is usually 5 days.
3.What payment methods are accepted for 7134LA25PDGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA25PDGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA25PDGI?
7134LA25PDGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA25PDGI 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 7134LA25PDGI?
For technical support, including 7134LA25PDGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA25PDGI requirements.
6.How does Aetrix verify that 7134LA25PDGI is sourced from the original manufacturer or authorized distributors?
All 7134LA25PDGI 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 7134LA25PDGI meets industry standards.
7.What is the process for return or replacement of 7134LA25PDGI?
All 7134LA25PDGI units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA25PDGI, 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 7134LA25PDGI part is unused and in its original packaging.
Return procedure for 7134LA25PDGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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