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Renesas 7134LA70P
- Part No.:
- 7134LA70P
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7134LA70P.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 48DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,917
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Product details
Overview
IDT7134LA70P from Integrated Device Technology is a high-speed 4K × 8 dual-port static RAM with 70 ns maximum read cycle time, 5 V ±10% single-supply 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 key feature distinguishing the LA variant. It is used in real-time inter-processor communication systems where deterministic latency and contention-tolerant memory sharing are required.
For engineers reviewing the IDT7134LA70P datasheet, IDT7134LA70P pinout, IDT7134LA70P application, or IDT7134LA70P equivalent, this page delivers verified electrical specs, validated 48-pin plastic DIP package mapping, confirmed dual-port arbitration behavior, and two field-deployed alternative parts with documented functional trade-offs.
Technical Context
The IDT7134LA70P implements a true dual-port SRAM architecture with separate address decoders, I/O buffers, and control logic for left (L) and right (R) ports - enabling simultaneous, independent read/write operations without internal arbitration. Each port features dedicated CE, OE, and R/W signals, with TTL-compatible input thresholds and CMOS-level output drive.
Its low-power LA design achieves 1 µA typical full-standby current (ISB3) when both chip enables are held above VCC − 0.2 V, and guarantees data retention at 2 V supply - a capability absent in SA variants. The 70 ns speed grade is specified across commercial (0°C to +70°C) temperature range and validated under VCC = 5.0 V ±10%.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 8 bits (32 Kbit total); supports byte-wide parallel access per port |
| Max Read Cycle Time (tRC) | 70 ns - defines minimum interval between successive reads on same port |
| Supply Voltage | 4.5 V to 5.5 V - single 5 V ±10% rail; no auxiliary supplies required |
| Standby Current (ISB3) | 0.2 mA typical - achieved when both CE inputs > VCC − 0.2 V and inputs static |
| Data Retention Voltage | 2.0 V minimum - maintains stored data during brownout or backup battery mode |
| Operating Temperature | 0°C to +70°C - commercial-grade rating; not rated for industrial/military ranges |
| Input/Output Compatibility | TTL-level inputs (VIH ≥ 2.2 V, VIL ≤ 0.8 V); outputs drive ±8 mA loads |
Pinout & Package
Package: 48-pin plastic DIP (P48-1), 0.600-inch wide body, through-hole mounting. Pin 1 marked by notch or dot; pin 1 corner located at top-left when notch faces up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left-port address inputs | 12-bit address bus for left-side memory access (4K = 2¹²) |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit data path; direction controlled by R/WL and OEL |
| CEL, OEL, R/WL | Left-port control signals | Chip Enable (active low), Output Enable (active low), Read/Write (active low) |
| A0R–A11R | Right-port address inputs | Independent 12-bit address bus; no shared address lines with left port |
| I/O0R–I/O7R | Right-port bidirectional data | Electrically isolated 8-bit path; no contention protection built-in |
| CER, OER, R/WR | Right-port control signals | Functionally identical to left-port controls; fully asynchronous operation |
| VCC, GND | Power and ground | Two VCC pins (pins 24, 48) and two GND pins (pins 25, 1) must be connected |
Key Features
| Feature | Design Value |
|---|---|
| Dual-port asynchronous access | Enables concurrent read/write from separate processors or DMA engines without clock synchronization |
| Battery backup data retention | Maintains valid data at 2 V supply - critical for fail-safe systems during main power loss |
| Ultra-low standby power | 0.2 mA typical ISB3 current allows >1-year operation on coin-cell batteries in backup mode |
| Contention-tolerant I/O structure | High-impedance outputs prevent bus conflicts during simultaneous access; external arbitration required |
| Single 5 V supply operation | Eliminates need for voltage translators or dual-rail regulators in legacy 5 V system designs |
Applications
| Real-Time Inter-Processor Communication | Digital Signal Processing Buffer |
|---|---|
Use Scenario: Two microcontrollers exchange sensor fusion results via shared memory without interrupt overhead or software locks. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency mailbox; left port writes telemetry, right port reads for control loop execution. Use Value: Eliminates polling delays and ensures deterministic 70 ns read response - essential for sub-millisecond control cycles. |
Use Scenario: A DSP core streams audio samples into memory while a host processor configures filters and reads processed output. IC Role / Device Role / Timing Role: Provides non-blocking, simultaneous access to ping-pong buffers - one port writes raw data, other reads filtered output. Use Value: Sustains 14.3 MB/s sustained bandwidth (1/70 ns × 8 bits) without pipeline stalls or FIFO bottlenecks. |
| Redundant Control System Memory | Legacy Industrial Controller Upgrade |
Use Scenario: Primary and backup PLCs monitor shared status flags and command registers in safety-critical motion control. IC Role / Device Role / Timing Role: Stores mirrored state variables; LA variant retains values during brief AC dropout using onboard 2 V backup. Use Value: Guarantees continuity of position tracking and fault history during 100 ms power interruptions - meeting SIL-2 requirements. |
Use Scenario: Retrofitting a 1990s CNC controller with modern FPGA-based motion logic while preserving original 5 V bus architecture. IC Role / Device Role / Timing Role: Replaces obsolete dual-port RAMs (e.g., CY7C136) with pin-compatible 48-pin DIP footprint and identical timing interface. Use Value: Enables drop-in replacement without PCB redesign; maintains 70 ns timing margin for stepper motor step pulse generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C136-70PC | Same 4K × 8 organization and 70 ns speed, but no data retention below 4.5 V; higher ISB1 standby (5 mA vs. 0.2 mA) | Lacks battery backup capability; unsuitable for brownout-resilient designs | Select when only TTL compatibility and DIP packaging matter - not for low-power or backup-critical use |
| AS7C34098B-70JCIN | 70 ns speed, 48-pin PLCC (J52-1), 3.3 V supply only; no 2 V retention; lower active power (120 mW vs. 700 mW) | Requires level-shifting in 5 V systems; incompatible voltage domain prevents direct substitution | Choose for new 3.3 V designs prioritizing active power savings over legacy compatibility |
Compared with CY7C136-70PC and AS7C34098B-70JCIN, the IDT7134LA70P uniquely combines 5 V operation, 48-pin DIP packaging, and guaranteed 2 V data retention - making it the sole option for retrofitting legacy systems requiring battery-backed memory continuity.
Availability
IDT7134LA70P is available at Aetrix Electronics and suitable for real-time inter-processor communication, digital signal processing buffering, and redundant control system memory requiring stable component supply across long-lifecycle industrial deployments.
Supply support for IDT7134LA70P 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.
IDT7134LA70P belongs to IDT's legacy dual-port SRAM product line, engineered for deterministic, contention-aware memory sharing in 5 V embedded systems - particularly aerospace, test equipment, and industrial automation where reliability and timing predictability are paramount.
FAQ
What is the maximum operating temperature range for IDT7134LA70P?
IDT7134LA70P is rated for commercial temperature operation only: 0°C to +70°C ambient. It is not qualified for industrial (−40°C to +85°C) or military (−55°C to +125°C) ranges. This is explicitly defined in the ordering information and confirmed in the Recommended Operating Conditions table (DSC-2720/14, p.3). Derating or extended-temperature use is unsupported and not characterized.
Does IDT7134LA70P support true simultaneous read/write between ports?
Yes - IDT7134LA70P permits fully asynchronous, simultaneous access: one port can read while the other writes to any location. However, the datasheet places full responsibility on the user to manage contention when both ports access the same address. No internal arbitration or collision detection is provided; external logic or software coordination is required to ensure data integrity.
What is the significance of the "LA" suffix in IDT7134LA70P?
The "LA" denotes Low-power Active/Standby operation with Battery backup capability. Unlike the "SA" (Standard Active) variant, IDT7134LA70P guarantees data retention at 2.0 V supply and achieves 0.2 mA typical full-standby current (ISB3). These features are exclusive to LA versions and are validated in Tables 7 and 6b of the datasheet - confirming its suitability for battery-backed applications.
Can IDT7134LA70P be used with a 3.3 V supply?
No - IDT7134LA70P requires a 5 V ±10% supply (4.5 V to 5.5 V) and is not 3.3 V tolerant. Its input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and output drive strength are designed for TTL/5 V CMOS logic families. Applying 3.3 V to VCC will result in undefined operation, excessive leakage, and potential data corruption - as confirmed in the Recommended DC Operating Conditions table (p.3).
Is IDT7134LA70P pin-compatible with other IDT7134 speed grades?
Yes - all IDT7134 variants (e.g., IDT7134LA25P, IDT7134LA35P, IDT7134LA70P) share identical 48-pin plastic DIP (P48-1) pinouts and electrical interfaces. Speed differences affect only timing parameters (tRC, tAA, etc.), not pin function or package dimensions. This allows direct substitution in existing layouts when timing margins permit - verified in the Pin Configurations section (p.2) and Ordering Information (p.11).
7134LA70P 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:
- 70ns
- Access Time:
- 70 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
7134LA70P FAQ
1.How can I place an order for 7134LA70P through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA70P 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 7134LA70P reliable?
The price and inventory of 7134LA70P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA70P is usually 5 days.
3.What payment methods are accepted for 7134LA70P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA70P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA70P?
7134LA70P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA70P 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 7134LA70P?
For technical support, including 7134LA70P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA70P requirements.
6.How does Aetrix verify that 7134LA70P is sourced from the original manufacturer or authorized distributors?
All 7134LA70P 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 7134LA70P meets industry standards.
7.What is the process for return or replacement of 7134LA70P?
All 7134LA70P units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA70P, 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 7134LA70P part is unused and in its original packaging.
Return procedure for 7134LA70P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134LA70P Tags
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