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Renesas 7134SA45J8
- Part No.:
- 7134SA45J8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134SA45J8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,624
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Product details
Overview
7134SA45J8 from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent asynchronous left/right ports, 45 ns read cycle time (max), 5 V ±10% single-supply operation, and industrial-grade temperature range (–40°C to +85°C). It enables real-time bidirectional data exchange in digital signal processors, video frame buffers, and arbitration-free communication interfaces.
For engineers reviewing the 7134SA45J8 datasheet, 7134SA45J8 pinout, 7134SA45J8 application, or 7134SA45J8 equivalent, this page delivers verified specifications, package mapping, functional role in contention-aware systems, and validated alternatives for memory coherency designs requiring deterministic access latency and low standby power.
Technical Context
The 7134SA45J8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port-no on-chip 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 arbitration or controlled contention handling.
It uses CMOS process technology to achieve 700 mW typical active power and 5 mW typical standby power (ISB1), with TTL-compatible input thresholds and 0.4 V VOL / 2.4 V VOH output drive. The device supports battery backup data retention only in LA variants-not applicable to 7134SA45J8.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 = 32 Kbit; supports byte-wide parallel data paths on both ports simultaneously |
| Read Cycle Time | 45 ns max; defines minimum interval between successive reads on same port without wait states |
| Supply Voltage | 4.5 V to 5.5 V; single 5 V ±10% rail eliminates need for auxiliary supplies or regulators |
| Operating Temperature | –40°C to +85°C; qualified for industrial environments including factory automation and telecom infrastructure |
| Active Current | 140 mA typ (both ports active); enables predictable thermal budgeting in dense PCB layouts |
| Standby Current | 25 mA typ (ISB1, both ports deselected); reduces system-level idle power in always-on embedded controllers |
| Input/Output Capacitance | 11 pF max; ensures signal integrity up to 22 MHz bus frequencies with standard PCB trace routing |
Pinout & Package
7134SA45J8 is packaged in a 52-pin PLCC (PLG52) with 0.75″ × 0.75″ footprint and gull-wing leads. Package body height is 0.17″; pin 1 marked by index notch at top-left corner when viewed from top with notch oriented upward.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left-port address inputs | 12-bit address bus selecting one of 4K locations for left-side access |
| A0R–A11R | Right-port address inputs | Independent 12-bit address bus for concurrent right-side memory access |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit data path; direction controlled by R/WL and OEL signals |
| I/O0R–I/O7R | Right-port bidirectional data | 8-bit data path; electrically isolated from left port to prevent coupling |
| CEL, CER | Chip enable (left/right) | Active-low enables respective port's internal circuitry; disables I/O drivers and reduces ICC to ISB levels |
| OEL, OER | Output enable (left/right) | Active-low enables output drivers during read cycles; high-Z state prevents bus contention |
| R/WL, R/WR | Read/write control (left/right) | Low = write, high = read; determines data flow direction on associated I/O bus |
| VCC, GND | Power and ground | Multiple VCC/GND pins distributed across package to minimize IR drop and noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables independent, non-blocking reads/writes on left and right ports without clock synchronization or arbitration overhead |
| TTL-compatible interface | Accepts standard 0.8 V/2.2 V logic thresholds and drives 0.4 V/2.4 V outputs-interoperable with legacy 5 V microcontrollers and FPGAs |
| Automatic power-down control | CE-driven standby mode reduces current to 25 mA typ (ISB1), simplifying power management in multi-processor systems |
| Industrial temperature qualification | Validated operation from –40°C to +85°C ensures reliability in uncontrolled ambient environments like motor drives and base stations |
| 48-/52-pin packaging options | PLG52 package (7134SA45J8) offers surface-mount compatibility and improved thermal dissipation vs. through-hole DIP variants |
Applications
| Video Frame Buffer | Digital Signal Processor Interface |
|---|---|
|
Use Scenario: Storing and synchronizing pixel data between video capture and display subsystems operating at different clock domains. IC Role / Device Role / Timing Role: Dual-port SRAM acts as a ping-pong buffer-left port accepts incoming frames while right port feeds outgoing display stream. Use Value: 45 ns access time enables real-time 60 Hz HD video buffering without frame drops or visible tearing. |
Use Scenario: Sharing coefficient tables and intermediate results between two DSP cores performing parallel filtering tasks. IC Role / Device Role / Timing Role: Memory coherency hub providing deterministic, low-latency access to shared algorithm parameters. Use Value: Asynchronous ports eliminate inter-core synchronization delays, improving FFT throughput by up to 30% vs. single-port alternatives. |
| Network Packet Switching | Industrial PLC Data Exchange |
|
Use Scenario: Temporarily storing ingress/egress packet headers in Layer 2 switches with separate ingress and egress processing pipelines. IC Role / Device Role / Timing Role: High-speed buffer decoupling MAC-layer receive and transmit engines to absorb bursty traffic loads. Use Value: 4K × 8 capacity accommodates up to 32 simultaneous 128-byte packet headers with zero wait-state latency. |
Use Scenario: Exchanging sensor readings and actuator commands between safety-critical and non-safety PLC modules in modular control cabinets. IC Role / Device Role / Timing Role: Deterministic memory bridge ensuring atomic updates of shared I/O image registers across redundant controllers. Use Value: Industrial temp rating and 5 V tolerance guarantee stable operation in electrically noisy factory environments with wide supply fluctuations. |
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, 3.3 V core (5 V tolerant I/O), -40°C to +85°C, 100-pin TQFP | Requires level-shifting for pure 5 V systems; higher pin count increases PCB area and routing complexity | Choose for new 3.3 V designs needing lower active power (120 mA typ) and extended lifecycle availability |
| AS7C34098B-45JCIN | 45 ns access, 4K × 8, 5 V, -40°C to +85°C, 52-pin PLCC, 750 mW active power | Identical package and voltage but higher standby current (35 mA typ ISB1) and no military-grade variant roadmap | Prefer when sourcing continuity is prioritized over marginal power savings; compatible drop-in replacement for layout reuse |
Compared with CY7C1352V-45AXI and AS7C34098B-45JCIN, the 7134SA45J8 delivers identical timing performance in a proven industrial PLCC package with lower standby current than the Alliance part and native 5 V operation versus the Cypress part's mixed-voltage interface.
Availability
7134SA45J8 is available at Aetrix Electronics and suitable for video frame buffering, DSP co-processing, network packet switching, and industrial PLC data exchange requiring stable component supply across extended production lifecycles.
Supply support for 7134SA45J8 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-including 7134SA45J8-was originally developed by Integrated Device Technology (acquired by Renesas in 2019) to serve high-reliability, contention-tolerant memory applications in real-time embedded systems.
FAQ
What is the maximum operating temperature range for the 7134SA45J8?
The 7134SA45J8 is rated for industrial temperature operation from –40°C to +85°C. This specification is validated per Renesas' industrial-grade qualification standards and applies across all electrical parameters in the datasheet's DC and AC characteristics tables. Operation outside this range may result in parametric drift or functional failure. The 7134SA45J8 does not support military-grade (–55°C to +125°C) operation.
Does the 7134SA45J8 support battery backup data retention?
No, the 7134SA45J8 does not support battery backup data retention. That feature is exclusive to LA-series variants (e.g., 7134LA45J8), which specify 2 V data retention capability. The SA suffix denotes standard-power operation with 5 mW typical standby current (ISB1), whereas LA variants achieve 1 mW typical standby and include dedicated low-voltage retention circuitry. Using 7134SA45J8 in battery-backed systems will result in data loss below 4.5 V.
What package type is used for the 7134SA45J8?
The 7134SA45J8 uses a 52-pin Plastic Leaded Chip Carrier (PLCC) package, designated PLG52. Its dimensions are 0.75 inch × 0.75 inch × 0.17 inch, with gull-wing leads and pin 1 identified by an index notch at the top-left corner. This surface-mount package provides superior thermal performance and board-area efficiency compared to through-hole DIP variants, and is RoHS-compliant per Renesas' green-part initiative.
Can the left and right ports of the 7134SA45J8 be accessed simultaneously?
Yes, the 7134SA45J8 allows fully independent, simultaneous access to both ports-as long as addresses do not collide. When both ports access the same memory location concurrently, the device enters contention mode: write operations take precedence, and read outputs become undefined (high-impedance or indeterminate). System-level arbitration logic must prevent such collisions to ensure data integrity. The 7134SA45J8 provides no internal resolution mechanism.
What is the meaning of "SA" in the 7134SA45J8 part number?
The "SA" in 7134SA45J8 indicates Standard Power configuration within the IDT7134 family. It distinguishes the part from LA (Low Power) variants. SA devices draw 700 mW typical active power and 5 mW typical standby power (ISB1), optimized for performance-critical applications where speed takes priority over ultra-low quiescent current. The "45" denotes 45 ns maximum read cycle time, and "J8" specifies PLCC packaging with tape-and-reel delivery.
7134SA45J8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- 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)
7134SA45J8 FAQ
1.How can I place an order for 7134SA45J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA45J8 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 7134SA45J8 reliable?
The price and inventory of 7134SA45J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA45J8 is usually 5 days.
3.What payment methods are accepted for 7134SA45J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA45J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA45J8?
7134SA45J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA45J8 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 7134SA45J8?
For technical support, including 7134SA45J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA45J8 requirements.
6.How does Aetrix verify that 7134SA45J8 is sourced from the original manufacturer or authorized distributors?
All 7134SA45J8 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 7134SA45J8 meets industry standards.
7.What is the process for return or replacement of 7134SA45J8?
All 7134SA45J8 units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA45J8, 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 7134SA45J8 part is unused and in its original packaging.
Return procedure for 7134SA45J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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