My Inquiry
My Account
Renesas 7134SA45J
- Part No.:
- 7134SA45J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134SA45J.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,949
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7134SA45J from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent asynchronous left/right ports, 45 ns maximum read cycle time, TTL-compatible 5 V ±10% operation, and industrial/military temperature support. It enables contention-tolerant memory sharing in real-time digital signal processors and military avionics systems requiring zero-wait-state dual-access.
For engineers reviewing the 7134SA45J datasheet, 7134SA45J pinout, 7134SA45J application, or 7134SA45J equivalent, key selection criteria include port arbitration independence, 25 ns address access time, 200 µA full-standby current (ISB3), and compatibility with 48-pin SB48 sidebraze DIP packaging for ruggedized deployment.
Technical Context
The 7134SA45J implements fully asynchronous dual-port architecture with separate address, control, and I/O pins per port-no on-chip arbitration logic required. Each port features independent CE, OE, R/W, and address decoding, enabling simultaneous but externally managed access to shared memory locations.
It uses CMOS high-performance fabrication for low-power operation: 140 mA typical dynamic current (both ports active), 25 mA standby (TTL-level inputs), and 1.0 mA full-standby (CMOS-level inputs). Battery backup data retention at 2 V is not supported-this is the SA (standard power) variant, not LA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 bits (32 Kbit); supports two independent 8-bit data paths without internal arbitration. |
| Read Cycle Time | 45 ns max; defines minimum interval between successive reads on same port-critical for real-time DSP buffering. |
| Address Access Time | 45 ns max; determines latency from address assertion to valid data output-enables tight timing closure in FPGA co-processor interfaces. |
| Supply Voltage | 4.5 V to 5.5 V; single 5 V ±10% rail simplifies power design and ensures TTL-level interoperability. |
| Operating Temperature | –55°C to +125°C (military grade); validated for sustained operation in airborne and ground vehicle mission-critical systems. |
| Standby Current (ISB3) | 1.0 mA max (both ports, CMOS-level CE); enables ultra-low-power sleep mode during system idle without battery backup. |
| Package | 48-pin SB48 sidebraze DIP; hermetically sealed ceramic package rated for high-reliability, shock/vibration-prone environments. |
Pinout & Package
7134SA45J is supplied in a 48-pin SB48 sidebraze dual-in-line package (DIP), measuring approximately 0.62 in × 2.43 in × 0.15 in, with ceramic body and solder-sealed construction for MIL-PRF-38535 QML compliance.
| 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 for valid read/write. |
| A0R–A11R | Right port address inputs | Independent 12-bit address bus for right-side access; no electrical or timing dependency on left port addresses. |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit tri-state I/O; driven only when CEL = LOW and OEL = LOW (read) or R/WL = LOW (write). |
| I/O0R–I/O7R | Right port bidirectional data | Electrically isolated 8-bit data path; allows concurrent left-read/right-write without bus contention hardware. |
| CEL, CER | Chip enable (left/right) | Active-low enables respective port; when HIGH, port enters ISB2/ISB4 standby (25 mA or 75 mA), reducing power autonomously. |
| OEL, OER | Output enable (left/right) | Active-low controls output drivers; HIGH forces high-impedance state-essential for bus sharing and external arbitration. |
| R/WL, R/WR | Read/write control (left/right) | Active-low write strobe; when LOW with CE = LOW, initiates write; when HIGH with CE = LOW and OE = LOW, enables read. |
| VCC, GND | Power and ground | All VCC pins must be decoupled locally; all GND pins require low-inductance return paths to maintain signal integrity across both ports. |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables independent, unsynchronized read/write cycles on left and right ports-eliminates wait states in real-time control loops. |
| TTL-compatible interface | Direct connection to legacy 5 V logic families (e.g., 74LS, FPGAs with 5 V tolerant I/O) without level-shifting circuitry. |
| MIL-PRF-38535 QML compliance | Qualified for military applications including avionics, radar, and secure comms; includes screening, traceability, and reliability testing. |
| Automatic power-down control | CE-driven standby reduces active current to ≤25 mA per port-critical for thermal management in dense embedded modules. |
| 48-pin SB48 ceramic DIP | Hermetic, sidebraze construction provides superior moisture resistance and mechanical robustness vs. plastic packages in harsh environments. |
Applications
| Real-Time Digital Signal Processing | Military Radar Data Buffering |
|---|---|
|
Use Scenario: Simultaneous acquisition and processing of ADC samples in a radar front-end, where one processor writes raw data while another reads processed results. IC Role / Device Role / Timing Role: Dual-port SRAM acts as a zero-latency shared memory buffer between ADC controller and DSP core-no arbitration logic needed. Use Value: 45 ns read cycle and 45 ns address access enable sub-microsecond data handoff, sustaining >20 MSPS throughput without pipeline stalls. |
Use Scenario: Storing intermediate FFT outputs in airborne radar systems where environmental stress demands high-reliability packaging. IC Role / Device Role / Timing Role: Provides radiation-tolerant, temperature-stable memory storage with MIL-PRF-38535 QML qualification for mission-critical flight systems. Use Value: SB48 ceramic DIP package ensures operational integrity from –55°C to +125°C and survives 1000+ g shock events per MIL-STD-883. |
| Industrial Motion Controller Memory | Satellite Onboard Telemetry Buffer |
|
Use Scenario: Coordinating servo motor position updates and encoder feedback in CNC machines using two microcontrollers sharing motion parameters. IC Role / Device Role / Timing Role: Serves as deterministic, contention-managed shared memory between motion CPU and safety monitor CPU. Use Value: Independent CE/OE/R/W controls allow precise external arbitration-guaranteeing atomic parameter updates without software locks. |
Use Scenario: Temporarily storing downlinked telemetry packets before error-correction encoding in LEO satellite payloads. IC Role / Device Role / Timing Role: High-speed dual-port buffer absorbs bursty sensor data while allowing background processor to fetch and encode packets. Use Value: 1.0 mA ISB3 standby current extends battery life during orbital eclipse; 45 ns access meets tight downlink scheduling windows. |
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, but uses 52-pin TQFP; lower standby current (50 µA ISB3), no MIL-PRF-38535 rating. | Better suited for commercial industrial controllers where PCB space and power efficiency outweigh hermeticity requirements. | Select when footprint flexibility and ultra-low standby are prioritized over military qualification and DIP compatibility. |
| IDT7133SA45JG | Same 4K × 8 size and 45 ns speed, but single-port architecture; lacks right-port I/O, CE, OE, R/W signals. | Applicable only in non-concurrent access scenarios-requires external multiplexing or software serialization for dual-CPU use. | Choose only if system design eliminates true simultaneous access; otherwise, 7134SA45J's native dual-port eliminates arbitration overhead. |
Compared with CY7C1352V-45AXI and IDT7133SA45JG, the 7134SA45J uniquely delivers MIL-qualified dual-port functionality in a sidebraze DIP-enabling direct drop-in replacement in legacy defense platforms without layout or firmware changes.
Availability
7134SA45J is available at Aetrix Electronics and suitable for radar signal processing, avionics data buffering, and ruggedized industrial motion control requiring stable component supply across extended product lifecycles.
Supply support for 7134SA45J 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 7134SA45J-was designed specifically for high-reliability dual-access memory applications in military and aerospace systems where deterministic timing, radiation tolerance, and hermetic packaging are mandatory.
FAQ
What is the operating temperature range for the 7134SA45J?
The 7134SA45J is rated for –55°C to +125°C, meeting military-grade specifications per MIL-PRF-38535 QML. This range is validated across all electrical parameters including 45 ns read cycle time and 1.0 mA ISB3 standby current, making it suitable for deployment in aircraft, missile guidance, and ground vehicle electronics where ambient extremes occur.
Does the 7134SA45J support battery backup data retention?
No, the 7134SA45J does not support battery backup data retention. That feature is exclusive to the LA (low-power) variants such as 7134LA45JG. The "SA" suffix denotes standard power operation, optimized for performance and MIL-qualified reliability-not low-voltage retention. For 2 V data retention capability, specify an LA-series part instead of 7134SA45J.
Which package type is used by the 7134SA45J?
The 7134SA45J is packaged in a 48-pin SB48 sidebraze ceramic dual-in-line package. This hermetically sealed, solder-sealed construction complies with MIL-PRF-38535 QML requirements and provides superior thermal cycling endurance and moisture resistance compared to plastic DIP or PLCC alternatives-critical for long-term field reliability in defense systems.
Can the left and right ports of the 7134SA45J operate simultaneously?
Yes, the 7134SA45J supports fully independent, asynchronous operation on both ports-reads and writes may occur concurrently. However, simultaneous access to the same memory location requires external arbitration to ensure data integrity, as the device provides no built-in collision detection or resolution logic. This behavior is explicitly defined in the Truth Table I and functional description of the 7134SA45J datasheet.
What is the maximum power consumption of the 7134SA45J during active operation?
Under worst-case conditions (both ports active, f = fMAX), the 7134SA45J draws up to 240 mA dynamic current at VCC = 5.5 V, corresponding to ~1.32 W maximum power dissipation. This value is confirmed in Table 06b of the official Renesas datasheet for the 7134SA45J and applies across the full military temperature range.
7134SA45J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- 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:
- 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)
7134SA45J FAQ
1.How can I place an order for 7134SA45J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA45J 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 7134SA45J reliable?
The price and inventory of 7134SA45J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA45J is usually 5 days.
3.What payment methods are accepted for 7134SA45J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA45J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA45J?
7134SA45J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA45J 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 7134SA45J?
For technical support, including 7134SA45J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA45J requirements.
6.How does Aetrix verify that 7134SA45J is sourced from the original manufacturer or authorized distributors?
All 7134SA45J 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 7134SA45J meets industry standards.
7.What is the process for return or replacement of 7134SA45J?
All 7134SA45J units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA45J, 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 7134SA45J part is unused and in its original packaging.
Return procedure for 7134SA45J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134SA45J Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
