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Renesas 7134LA25P
- Part No.:
- 7134LA25P
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7134LA25P.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 48DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,176
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Product details
Overview
IDT7134LA25P from Integrated Device Technology is a high-speed 4K × 8 dual-port static RAM with 25 ns read cycle time, TTL-compatible 5V ±10% operation, industrial temperature range (–40°C to +85°C), and battery-backed data retention down to 2V. It enables simultaneous asynchronous access from independent left/right ports in real-time interprocessor communication systems.
For engineers reviewing the IDT7134LA25P datasheet, IDT7134LA25P pinout, IDT7134LA25P application, or IDT7134LA25P equivalent, key selection criteria include dual-port arbitration-free timing, sub-1 µA full-standby current (ISB3), 2V data retention capability, and compatibility with legacy 48-pin plastic DIP layouts.
Technical Context
The IDT7134LA25P implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port-no internal arbitration logic required. Each port features independent chip enable (CEL/CER), output enable (OEL/OER), and read/write (R/WL/R/WR) controls, enabling external contention management.
Its low-power LA variant uses CMOS process optimization to achieve 1 mW typical standby power and supports battery backup mode at VCC = 2V, where data retention draws ≤4000 µA across military/industrial ranges. The device operates strictly within 5.0V ±10% supply and requires no voltage translation for TTL-level interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8-bit (32 kbit); supports two independent 8-bit data paths without shared bus contention |
| Read Cycle Time (tRC) | 25 ns max; defines minimum interval between successive reads on same port, critical for real-time FIFO buffering |
| Data Retention Voltage | 2.0 V min; enables nonvolatile hold during main power loss using coin-cell backup |
| Full Standby Current (ISB3) | 0.2 µA typ. / 4.0 mA max; achieved when both CE inputs > VCC – 0.2V and all inputs static |
| Operating Voltage | 4.5 V to 5.5 V; single-supply TTL compatibility eliminates level-shifting in legacy 5V systems |
| Temperature Range | –40°C to +85°C; qualified for industrial environments including factory automation and motor control |
| Package | 48-pin plastic DIP (P48-1); 0.600-inch width, through-hole mount compatible with wave-solder assembly |
Pinout & Package
48-pin plastic DIP (P48-1), body dimensions ≈ 0.55 in × 2.43 in × 0.18 in; all VCC and GND pins must be externally decoupled.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left port address inputs | 12-bit address bus for left-side memory access; must not mirror A0R–A11R per truth table |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit tri-state data path; driven only when OEL = L and CEL = L |
| CEL, OEL, R/WL | Left port controls | Chip Enable (active low), Output Enable (active low), Read/Write (H=read, L=write) |
| A0R–A11R | Right port address inputs | Independent 12-bit address space; concurrent access to same location requires external arbitration |
| I/O0R–I/O7R | Right port bidirectional data | Electrically isolated from left I/O; no internal bus contention |
| CER, OER, R/WR | Right port controls | Functionally identical to left-side controls but electrically separate |
| VCC, GND | Power terminals | Multiple VCC/GND pins distributed for noise reduction; all must be connected |
Key Features
| Feature | Design Value |
|---|---|
| Dual-port asynchronous operation | Enables deterministic latency for real-time inter-processor communication without arbitration overhead |
| Battery backup data retention | Maintains memory contents at 2V supply-critical for fail-safe state preservation in power-loss scenarios |
| Ultra-low ISB3 standby current | 0.2 µA typical draw allows multi-year battery life in backup mode without compromising speed |
| TTL-compatible interface | Direct connection to legacy microcontrollers and FPGAs without level shifters or pull-ups |
| Industrial temperature qualification | Guaranteed 25 ns access across –40°C to +85°C, supporting uncooled industrial enclosure deployment |
Applications
| Interprocessor Communication | Real-Time Data Buffering |
|---|---|
Use Scenario: Two microcontrollers exchange status and command data via shared memory without software handshaking. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency mailbox; left port serves CPU-A, right port serves CPU-B. Use Value: Eliminates polling delays and interrupt overhead-25 ns read cycles enable sub-microsecond message turnaround. | Use Scenario: High-speed ADC streams samples into one port while DSP reads processed results from the other port. IC Role / Device Role / Timing Role: Acts as ping-pong buffer; write port accepts incoming data, read port supplies post-processed frames. Use Value: Prevents data loss during burst transfers-full bandwidth available to each port independently. |
| Motor Control Safety Memory | Legacy System Upgrade Interface |
Use Scenario: Stores last valid position and fault codes during emergency shutdown in servo drives. IC Role / Device Role / Timing Role: Provides nonvolatile shadow memory; retains critical state when main 5V rail collapses. Use Value: 2V data retention ensures safe restart after brownout-no capacitor hold-up circuitry needed. | Use Scenario: Bridges ISA-bus host to modern FPGA co-processor by emulating dual-port register file. IC Role / Device Role / Timing Role: Serves as protocol-transparent memory-mapped interface; isolates timing domains. Use Value: Enables drop-in replacement of obsolete dual-port RAMs in fielded equipment with no PCB redesign. |
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 | 25 ns tRC, 5V, 4K × 8, but no 2V data retention; higher ISB3 (5 µA typ.) | Lacks battery backup-requires external supervisor IC for state retention | Choose when cost sensitivity outweighs retention need and board space permits extra support components |
| AS7C34098B-25JIN | 25 ns tRC, 3.3V core (5V tolerant I/O), 4K × 8, ISB3 = 1 µA typ., no 2V retention | Requires level translation for pure 5V systems; optimized for mixed-voltage designs | Select for new 3.3V-centric architectures where power efficiency trumps legacy voltage compatibility |
Compared with CY7C133-25JC and AS7C34098B-25JIN, the IDT7134LA25P uniquely delivers guaranteed 2V data retention in a pin-compatible 48-pin DIP package-enabling true plug-in replacement in industrial systems requiring fail-safe memory hold.
Availability
IDT7134LA25P is available at Aetrix Electronics and suitable for interprocessor communication, real-time data buffering, motor control safety memory, and legacy system upgrade interface applications requiring stable component supply and long-term industrial-grade availability.
Supply support for IDT7134LA25P 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, designs high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.
The IDT7134LA series was developed specifically for deterministic dual-port memory applications in harsh-environment industrial and military systems-prioritizing speed, low-power standby, and robust data retention over density or cost-per-bit.
FAQ
What is the maximum operating temperature range for the IDT7134LA25P?
The IDT7134LA25P is rated for industrial temperature operation from –40°C to +85°C. This specification is validated across all electrical parameters including 25 ns read cycle time, 2V data retention, and ISB3 standby current. The device does not support military-grade –55°C to +125°C operation-only SA variants carry that qualification.
Does the IDT7134LA25P support true simultaneous read/write between ports?
Yes-the IDT7134LA25P allows independent read and write operations on left and right ports concurrently. However, simultaneous access to the same memory address requires external arbitration to prevent data corruption; the device provides no internal conflict resolution. Its truth table confirms R/WL = H and R/WR = L can occur simultaneously with valid outputs on both I/O buses.
How does the battery backup function work on the IDT7134LA25P?
The IDT7134LA25P enters data retention mode when VCC drops to 2.0 V, drawing ≤4000 µA (industrial range) to preserve memory contents. This is enabled automatically-no control signal required. The LA variant's design ensures reliable retention at this voltage, unlike SA versions which lack this feature entirely. Backup power must be applied to the VCC pin.
What package type is used for the IDT7134LA25P?
The IDT7134LA25P uses a 48-pin plastic DIP (P48-1) package with dimensions approximately 0.55 in × 2.43 in × 0.18 in. It is through-hole mounted and compatible with standard wave-solder processes. Pin 1 is marked by a notch or dot; the ordering suffix "P" explicitly denotes this plastic DIP configuration.
Can the IDT7134LA25P be used in a 3.3V system?
No-the IDT7134LA25P requires a 5.0 V ±10% supply (4.5 V to 5.5 V) and is not 3.3V-compatible. Its input thresholds (VIH = 2.2 V min, VIL = 0.8 V max) and output drive levels are specified only for 5V operation. Attempting 3.3V supply will result in undefined behavior, failed data retention, and potential damage due to insufficient VCC margin.
7134LA25P 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 48-PDIP
7134LA25P FAQ
1.How can I place an order for 7134LA25P through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA25P 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 7134LA25P reliable?
The price and inventory of 7134LA25P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA25P is usually 5 days.
3.What payment methods are accepted for 7134LA25P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA25P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA25P?
7134LA25P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA25P 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 7134LA25P?
For technical support, including 7134LA25P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA25P requirements.
6.How does Aetrix verify that 7134LA25P is sourced from the original manufacturer or authorized distributors?
All 7134LA25P 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 7134LA25P meets industry standards.
7.What is the process for return or replacement of 7134LA25P?
All 7134LA25P units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA25P, 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 7134LA25P part is unused and in its original packaging.
Return procedure for 7134LA25P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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