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Renesas 7134LA55P
- Part No.:
- 7134LA55P
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7134LA55P.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 48DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,876
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Product details
Overview
IDT7134LA55P from Integrated Device Technology is a high-speed 4K × 8 dual-port static RAM with 55 ns maximum read cycle time, TTL-compatible 5 V ±10% operation, and 1 µA typical standby current per port. It supports fully asynchronous dual-port access with independent control/address/I/O on left and right sides, and enables battery-backed data retention down to 2 V - a feature exclusive to LA-grade variants. It is used in real-time inter-processor communication systems requiring zero-wait-state memory arbitration.
For engineers reviewing the IDT7134LA55P datasheet, IDT7134LA55P pinout, IDT7134LA55P application, or IDT7134LA55P equivalent, key selection considerations include dual-port contention management, 2 V data retention capability, 55 ns access timing under military/industrial temperature range (–55°C to +125°C), and compatibility with 48-pin plastic DIP packaging for legacy board designs.
Technical Context
The IDT7134LA55P implements two fully independent asynchronous memory ports sharing a single 4K × 8-bit SRAM array, each with dedicated CE, OE, R/W, address (A0–A11), and bidirectional I/O (I/O0–I/O7) signals. No internal arbitration logic is included - external hardware or software must resolve simultaneous access to the same address.
It uses CMOS process technology to achieve 700 mW typical active power and 1 µA typical full-standby current (ISB3) when both ports are disabled with CMOS-level inputs. The LA variant adds guaranteed 2 V data retention mode, enabling battery backup without volatile data loss during main power interruption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 8-bit (32 Kbit), dual-port architecture with separate left/right address and data buses |
| Access Time (tAA) | 55 ns max - defines minimum time from valid address to stable output data during read cycles |
| Data Retention Voltage | 2.0 V min - ensures nonvolatile data hold during main power loss; LA-specific capability |
| Standby Current (ISB3) | 0.2 µA typ. - ultra-low power consumption when both ports are disabled with CMOS-level CE inputs |
| Operating Voltage | 4.5 V to 5.5 V - single-supply TTL-compatible interface, no level-shifting required |
| Temperature Range | –55°C to +125°C - qualified per MIL-PRF-38535 QML for military-grade reliability |
| Input/Output Capacitance | 11 pF max - limits trace loading and signal integrity impact on high-speed bus designs |
Pinout & Package
Package: 48-pin plastic DIP (P48-1), 0.600-inch width, through-hole mounting compatible with legacy PCB layouts and socket-based test fixtures.
| 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 CEL assertion |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path; driven during write, tri-stated unless OEL = L and CEL = L |
| CEL | Left port chip enable | Active-low; disables left port and reduces current to ISB2/ISB3 levels when high |
| OEL | Left port output enable | Active-low; controls output drivers independently of CEL; allows read-only standby |
| R/WL | Left port read/write control | High = read, low = write; must be stable during address transitions per truth table |
| A0R–A11R | Right port address inputs | Independent 12-bit address bus; no electrical or timing dependency on left port |
| I/O0R–I/O7R | Right port bidirectional data | Electrically isolated from left I/O; requires external bus isolation if shared |
| CER, OER, R/WR | Right port control signals | Functionally identical to left-side counterparts but electrically separate |
| VCC, GND | Power and ground | All VCC pins must be decoupled locally; all GND pins tied to common ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Dual-port asynchronous operation | Enables concurrent CPU and DSP access to shared memory without clock synchronization or wait states |
| Battery backup data retention | Preserves stored data at 2 V supply - critical for fail-safe systems like avionics flight controllers |
| Ultra-low standby power (1 µA) | Reduces system-level quiescent current in always-on subsystems such as telemetry buffers |
| MIL-PRF-38535 QML qualification | Validates reliability for mission-critical applications including defense radar and satellite payload memory |
| 48-pin DIP package | Supports manual rework, socket-based validation, and backward compatibility with legacy industrial control boards |
Applications
| Avionics Data Buffering | Industrial PLC Dual-CPU Interface |
|---|---|
Use Scenario: Real-time exchange of sensor fusion data between flight management computer and navigation processor during power transition. IC Role / Device Role / Timing Role: Dual-port SRAM acting as contention-managed shared memory buffer with deterministic 55 ns read latency. Use Value: Eliminates arbitration logic overhead and guarantees sub-100 ns inter-processor data transfer even during brownout conditions via 2 V data retention. |
Use Scenario: Synchronized I/O state mirroring between safety-certified and non-safety-certified PLC CPUs in redundant control systems. IC Role / Device Role / Timing Role: Memory coherency bridge enabling lock-step execution verification without shared clock domain constraints. Use Value: Enables deterministic cross-checking of ladder logic outputs using fully asynchronous port access - no timing skew compensation required. |
| Military Radar Signal Processing | Legacy Test Equipment Memory Expansion |
Use Scenario: Storing digitized RF samples between ADC capture and FPGA-based FFT processing in airborne radar front-ends. IC Role / Device Role / Timing Role: High-reliability dual-port buffer supporting simultaneous streaming write (ADC side) and burst read (FPGA side). Use Value: MIL-spec temperature rating and QML qualification ensure uninterrupted operation at –55°C to +125°C under vibration and EMI stress. |
Use Scenario: Upgrading memory capacity in discontinued automated test equipment using existing 48-pin DIP sockets and hand-soldered layouts. IC Role / Device Role / Timing Role: Pin-compatible drop-in replacement for obsolete dual-port SRAMs in maintenance spares inventory. Use Value: Maintains original timing margins (55 ns) and voltage compliance (5 V ±10%) without PCB redesign or firmware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C134-55JC | 55 ns access, 5 V, 4K × 8, but no 2 V data retention; commercial temp only (0°C to +70°C) | Suitable for cost-sensitive non-military benchtop instruments where battery backup is unnecessary | Select when MIL-spec qualification and extended temperature support are not required |
| IDT7133LA55J | Same LA family, 55 ns, but 52-pin PLCC package - different footprint and thermal profile | Preferred for surface-mount production where DIP sockets are prohibited and higher I/O density is needed | Choose for new SMT designs requiring same electrical behavior but improved manufacturability |
Compared with CY7C134-55JC and IDT7133LA55J, the IDT7134LA55P uniquely combines military temperature range, 2 V data retention, and 48-pin DIP packaging - making it irreplaceable in field-deployed avionics and ruggedized industrial controllers requiring socket-based serviceability.
Availability
IDT7134LA55P is available at Aetrix Electronics and suitable for avionics data buffering, industrial PLC dual-CPU interface, and military radar signal processing requiring stable component supply across extended lifecycle programs.
Supply support for IDT7134LA55P 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
Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, and RF solutions for communications and computing infrastructure.
IDT7134LA55P belongs to IDT's legacy dual-port SRAM product line, engineered for high-reliability embedded systems demanding deterministic memory access, zero-wait-state performance, and extended environmental tolerance.
FAQ
What is the maximum operating temperature range for the IDT7134LA55P?
The IDT7134LA55P is qualified for operation from –55°C to +125°C and complies with MIL-PRF-38535 QML Class V requirements. This military-grade temperature range is confirmed in the Absolute Maximum Ratings table and supported by DC/AC characterization across the full span, making IDT7134LA55P suitable for deployment in engine-mounted avionics and battlefield electronics where ambient extremes are routine.
Does the IDT7134LA55P support true simultaneous read/write operations on both ports?
The IDT7134LA55P permits fully asynchronous access from both ports, but true simultaneous read/write to the same memory location is not guaranteed safe. The datasheet explicitly states that "it is the user's responsibility to ensure data integrity" during contention. IDT7134LA55P provides no internal arbitration - external semaphore logic or software protocols must prevent conflicting accesses to avoid bus contention or metastability.
What is the significance of the 'LA' suffix in IDT7134LA55P?
The 'LA' suffix denotes the low-power variant of the IDT7134 family, distinguished by 1 µA typical standby current (ISB3) and guaranteed 2 V data retention capability. This is confirmed in the Features section and DC Electrical Characteristics tables. The 'SA' variant lacks data retention and draws 5 µA typical in standby. IDT7134LA55P is the only version supporting battery backup operation.
Can the IDT7134LA55P be used with a 3.3 V system?
No - the IDT7134LA55P is strictly a 5 V ±10% device, with VIH minimum of 2.2 V and VIL maximum of 0.8 V. Its input thresholds and output drive strength are specified only for 5 V operation, and the Absolute Maximum Ratings cap terminal voltage at +7.0 V. Using IDT7134LA55P in a 3.3 V system would violate its DC operating conditions and risk functional failure or accelerated wear-out.
Is the 55 ns access time for IDT7134LA55P guaranteed across the full military temperature range?
Yes - the 55 ns maximum access time (tAA and tRC) is specified for the military temperature range (–55°C to +125°C) in Table 09b of the datasheet. This value is validated under worst-case VCC (4.5 V) and temperature conditions, and applies to both commercial/military speed grades. IDT7134LA55P delivers deterministic 55 ns performance without derating in harsh environments.
7134LA55P 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:
- 55ns
- Access Time:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 48-PDIP
7134LA55P FAQ
1.How can I place an order for 7134LA55P through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA55P 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 7134LA55P reliable?
The price and inventory of 7134LA55P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA55P is usually 5 days.
3.What payment methods are accepted for 7134LA55P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA55P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA55P?
7134LA55P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA55P 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 7134LA55P?
For technical support, including 7134LA55P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA55P requirements.
6.How does Aetrix verify that 7134LA55P is sourced from the original manufacturer or authorized distributors?
All 7134LA55P 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 7134LA55P meets industry standards.
7.What is the process for return or replacement of 7134LA55P?
All 7134LA55P units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA55P, 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 7134LA55P part is unused and in its original packaging.
Return procedure for 7134LA55P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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