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Renesas 7134SA35CB
- Part No.:
- 7134SA35CB
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7134SA35CB.pdf
- Description:
- IC SRAM 32KBIT PARALLEL SB48
- Quantity:
- Payment:
- Shipping:
Inventory:2,768
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Product details
Overview
IDT7134SA35CB from Renesas Electronics is a military-grade, high-speed 4K × 8 dual-port static RAM with fully asynchronous operation from either port, 35 ns maximum read cycle time, TTL-compatible 5 V ±10% supply, and 48-pin sidebraze DIP (SB48) packaging. It enables deterministic memory access in real-time arbitration-free systems such as radar signal processors and avionics data buffers.
For engineers reviewing the 7134SA35CB datasheet, 7134SA35CB pinout, 7134SA35CB application, or 7134SA35CB equivalent, this page delivers verified military-qualified timing, dual-port power-down behavior, CE-controlled standby modes, and SB48 package-specific pin mapping - all confirmed against Renesas' official May 2021 datasheet revision.
Technical Context
The 7134SA35CB implements two independent, fully asynchronous ports (Left and Right), each with dedicated address (A0–A11), bidirectional I/O (I/O0–I/O7), chip enable (CEL/CER), output enable (OEL/OER), and read/write (R/WL/R/WR) controls. No on-chip arbitration logic is included - external hardware or software must resolve contention when both ports access the same address simultaneously.
It uses CMOS high-performance fabrication to achieve 700 mW typical active power and supports three standby modes: ISB1 (TTL-level CE high), ISB2 (one port active), and ISB3/ISB4 (CMOS-level CE high), with full standby current as low as 1.0 mA (SA version) at +25°C. Data retention is not supported - only the LA variant offers 2 V battery backup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 8 bits = 32 Kbit total; supports independent 8-bit parallel reads/writes per port |
| Max Read Cycle Time (tRC) | 35 ns - defines minimum interval between successive reads on same port; enables ≥28.6 MHz sustained throughput |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V) - single-rail TTL-compatible operation; no auxiliary supplies required |
| Operating Temperature | −55°C to +125°C - MIL-PRF-38535 QML-compliant military grade; qualified for airborne and space-qualified platforms |
| Active Current (ICC) | 150 mA typical (both ports active, f = fMAX) - determines thermal load and regulator sizing in sealed enclosures |
| Standby Current (ISB3) | 1.0 mA typical (both ports in CMOS-level standby) - enables low-quiescent-power sleep states in mission-critical hold modes |
| Package | 48-pin sidebraze DIP (SB48) - hermetically sealed ceramic package with 0.62″ × 2.43″ footprint; MIL-STD-883 qualified |
Pinout & Package
48-pin sidebraze DIP (SB48) package: ceramic body, hermetic seal, lead finish SnPb (obsolete except SB48), 0.62″ × 2.43″ × 0.15″ dimensions. All VCC pins require local decoupling; all GND pins must be connected to system ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left port address inputs | 12-bit address bus for left-side memory access; latched on CE/L transition |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit tristate I/O; direction controlled by R/WL and OEL; high-impedance when OEL = VIH |
| CEL, OEL, R/WL | Left port control signals | Chip Enable (active low), Output Enable (active low), Read/Write (low = write); asynchronous port activation |
| 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 8-bit bus; simultaneous read/write possible if addresses differ |
| CER, OER, R/WR | Right port control signals | Functionally identical to left-side controls; no internal synchronization between ports |
| VCC, GND | Power and ground | Multiple VCC (pins 24, 39) and GND (pins 1, 25, 48) pins - mandatory distributed decoupling required |
| N/C | No-connect | Pins 23 and 47 are unconnected; must remain floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port architecture | Enables zero-wait-state concurrent access from independent buses - critical for real-time DSP and FPGA co-processing |
| 35 ns military-grade access speed | Guaranteed tRC ≤ 35 ns across −55°C to +125°C - supports deterministic latency in hardened flight control systems |
| Three-tier standby power management | ISB1 (25 mA), ISB2 (75 mA), ISB3 (1.0 mA) modes allow granular power gating per port based on system activity |
| TTL-compatible 5 V interface | Direct connection to legacy 5 V microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
| MIL-PRF-38535 QML qualification | Manufactured under military screening flow - includes burn-in, temperature cycling, and lot traceability for aerospace use |
Applications
| Radar Signal Processing | Avionics Data Buffering |
|---|---|
|
Use Scenario: Real-time digitized IF data buffering between ADC and FFT engine in pulse-Doppler radar front-end. IC Role / Device Role / Timing Role: Dual-port SRAM acts as ping-pong memory: one port accepts streaming ADC samples while the other feeds pre-processed blocks to the FFT core. Use Value: 35 ns tRC ensures sub-30 ns memory latency, enabling >28 MHz sample-to-process throughput without pipeline stalls. |
Use Scenario: Cross-domain data exchange between flight computer (ARINC 429) and display management unit in integrated cockpit systems. IC Role / Device Role / Timing Role: Provides non-blocking shared memory for time-critical telemetry updates and status flags between dissimilar processors. Use Value: Asynchronous port independence eliminates arbitration logic, reducing BOM count and failure points in DO-254-certified designs. |
| Secure Communication Modems | Tactical Vehicle Control Units |
|
Use Scenario: Key scheduling and cipher block chaining buffer in Type 1 encrypted HF/VHF radio modems operating in extended temperature environments. IC Role / Device Role / Timing Role: Stores encryption keys and intermediate state vectors; left port handles crypto engine writes, right port serves key lookup reads. Use Value: −55°C to +125°C operation and MIL-PRF-38535 qualification ensure reliability in unheated vehicle-mounted radios exposed to desert or arctic conditions. |
Use Scenario: Sensor fusion memory in armored vehicle engine control units interfacing analog sensor arrays and digital actuator drivers. IC Role / Device Role / Timing Role: Buffers raw CAN-sourced sensor data (port A) while feeding filtered values to PWM controllers (port B) with deterministic timing. Use Value: 48-pin SB48 package withstands mechanical shock/vibration; 35 ns access supports 10 kHz closed-loop control cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 7134SA45CB | Slower 45 ns max tRC; otherwise identical SB48 package, military temp, and pinout | Suitable where 22 MHz sustained throughput suffices; lower power draw in ISB modes due to relaxed timing | Select when system timing budget allows margin; reduces EMI and thermal stress in conduction-cooled modules |
| 7134SA35L48B | Same 35 ns speed and military grade, but in 48-pin LCC (LC48) ceramic package instead of SB48 | LCC offers smaller footprint (0.57″ × 0.57″) and better high-frequency signal integrity; requires different PCB land pattern | Choose for space-constrained layouts or RF-dense environments where DIP lead inductance is problematic |
Compared with 7134SA45CB and 7134SA35L48B, the 7134SA35CB delivers the fastest guaranteed access within the military-qualified SB48 form factor - making it optimal for latency-critical radar and EW subsystems where board area and legacy DIP compatibility are prioritized over minimal power savings or RF performance.
Availability
7134SA35CB is available at Aetrix Electronics and suitable for radar signal processing, avionics data buffering, and secure communication modems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 7134SA35CB 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 is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.
The IDT7134 family was originally developed by Integrated Device Technology (acquired by Renesas in 2019) to serve high-reliability dual-port memory needs in defense and aerospace systems - emphasizing MIL-qualified timing, hermetic packaging, and contention-tolerant architecture.
FAQ
What is the guaranteed maximum read cycle time for 7134SA35CB across its full military temperature range?
The 7134SA35CB guarantees a maximum read cycle time (tRC) of 35 ns over the full −55°C to +125°C operating range, as specified in Renesas' May 2021 datasheet Table 09a. This value is production-tested and applies to both ports under worst-case voltage (4.5 V) and temperature conditions, ensuring deterministic latency in hardened systems.
Does 7134SA35CB support battery backup data retention like some LA variants?
No, the 7134SA35CB does not support battery backup data retention. Only the LA suffix variants (e.g., 7134LA35CB) include the 2 V data retention feature. The SA version is optimized for standard power operation with 700 mW typical active power and 1.0 mA ISB3 standby current - no VDR specification applies to 7134SA35CB.
Which package type and pin count does 7134SA35CB use, and is it hermetically sealed?
The 7134SA35CB uses a 48-pin sidebraze DIP (SB48) package - a ceramic, hermetically sealed housing measuring 0.62″ × 2.43″ × 0.15″. It complies with MIL-STD-883 requirements and is explicitly qualified under MIL-PRF-38535 QML for military applications, distinguishing it from plastic DIP or PLCC alternatives.
How does port arbitration work on 7134SA35CB, and what happens during simultaneous access to the same address?
The 7134SA35CB provides no internal arbitration logic. When both ports access the same memory location simultaneously, contention occurs - the resulting data is undefined and may be corrupted. System designers must implement external hardware (e.g., semaphores) or software protocols to prevent concurrent writes. Truth Table I in the datasheet defines valid non-contention states for 7134SA35CB operation.
What are the key differences between 7134SA35CB and 7134SA35L48B beyond package type?
Beyond the SB48 DIP versus LC48 LCC packaging, 7134SA35CB and 7134SA35L48B share identical speed (35 ns), military temperature rating, pin functions, and electrical specifications. The primary design impact is mechanical: SB48 offers through-hole mounting and higher vibration tolerance, while LC48 enables denser layouts and superior high-frequency signal integrity due to shorter leads and ground-plane proximity.
7134SA35CB 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:
- 35ns
- Access Time:
- 35 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 48-SIDE BRAZED
7134SA35CB FAQ
1.How can I place an order for 7134SA35CB through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA35CB 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 7134SA35CB reliable?
The price and inventory of 7134SA35CB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA35CB is usually 5 days.
3.What payment methods are accepted for 7134SA35CB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA35CB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA35CB?
7134SA35CB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA35CB 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 7134SA35CB?
For technical support, including 7134SA35CB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA35CB requirements.
6.How does Aetrix verify that 7134SA35CB is sourced from the original manufacturer or authorized distributors?
All 7134SA35CB 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 7134SA35CB meets industry standards.
7.What is the process for return or replacement of 7134SA35CB?
All 7134SA35CB units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA35CB, 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 7134SA35CB part is unused and in its original packaging.
Return procedure for 7134SA35CB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134SA35CB Tags
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