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Renesas 7143LA35J
- Part No.:
- 7143LA35J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
7143LA35J.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,946
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Product details
Overview
IDT7143LA35J from Integrated Device Technology (IDT) is a high-speed 2K × 16 dual-port static RAM configured as a SLAVE device in MASTER/SLAVE memory expansion systems, operating at 35 ns max access time across military temperature range (–55°C to +125°C), with 5 V ±10% supply, TTL-compatible I/O, and battery backup data retention down to 2 V. It enables error-free 32-bit-or-wider word width expansion without external logic in real-time embedded control and avionics systems.
For engineers reviewing the IDT7143LA35J datasheet, IDT7143LA35J pinout, IDT7143LA35J application, or IDT7143LA35J equivalent, key selection considerations include its SLAVE-only BUSY input behavior, 68-pin PLCC/PGA/flatpack package compatibility, low standby current (1 mA typ.), dual independent asynchronous ports, and military-grade reliability per MIL-PRF-38535 QML.
Technical Context
The IDT7143LA35J implements fully asynchronous dual-port operation with separate address, control, and bidirectional I/O buses for left and right ports - enabling concurrent read/write access to any memory location. Its SLAVE architecture eliminates on-chip arbitration logic and uses BUSYR/BUSYL as dedicated write-inhibit inputs, unlike the MASTER IDT7133 which provides open-drain BUSY outputs.
It supports byte-level write control via R/WLUB/R/WLLB and R/WRUB/R/WRLB, operates with single 5 V supply, retains data at 2 V (typ. 100 µA retention current), and enters ultra-low-power standby (<1 mA) when both chip enables (CEL/CER) are high. No internal port arbitration or automatic priority resolution is performed - all contention management is delegated to the MASTER device.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32,768 bits total); supports independent 16-bit accesses per port |
| Access Time (max) | 35 ns - defines minimum read cycle time (tRC) for military-grade timing compliance |
| Supply Voltage | 5.0 V ±10% - requires dual VCC pins tied to same 4.5–5.5 V rail for reliable operation |
| Standby Current | 1 mA (typ.) - achieved when both CEL and CER are high; enables battery-backed retention |
| Data Retention | 2 V minimum - sustains stored data during brownout; typical ICCDR = 100 µA at 2 V |
| Operating Temp | –55°C to +125°C - qualified per MIL-PRF-38535 QML for harsh-environment deployment |
| I/O Compatibility | TTL - interfaces directly with 5 V logic families without level translation |
Pinout & Package
Available in 68-pin PLCC (PLG68), ceramic PGA (GU68), flatpack (FP68), and 100-pin TQFP (PNG100). This part uses the standard 68-pin dual-port RAM pinout shared across IDT7133/7143 family variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A10L / A0R–A11R | Address Inputs (Left/Right) | 11-bit address per port; selects one of 2K locations independently |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data Bus | 16-bit parallel data path per port; high-impedance when OE inactive |
| CEL / CER | Chip Enable (Left/Right) | Active-low enable; gates port activity and controls power-down mode |
| R/WLUB / R/WRUB R/WLLB / R/WRLB | Byte Write Enables | Independent upper/lower byte write control per port - enables 8-bit granularity |
| OEL / OER | Output Enable (Left/Right) | Active-low; places I/O pins in high-Z when deasserted |
| BUSYL / BUSYR | Busy Input (SLAVE only) | Write-inhibit signals - must be driven HIGH for normal operation or LOW to block writes |
| VCC (×2) / GND (×2) | Power & Ground | Both VCC and GND pins must be connected; ensures signal integrity and thermal stability |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent asynchronous ports | Enables true concurrent CPU/DSP access to shared memory without software arbitration overhead |
| SLAVE-only BUSY interface | Eliminates need for external OR-gating or arbitration logic when paired with IDT7133 MASTER |
| 2 V data retention | Preserves memory contents during main power loss - critical for avionics black-box logging |
| Byte-selectable write control | Reduces bus contention and enables partial-word updates without read-modify-write cycles |
| MIL-PRF-38535 QML qualification | Guarantees screening, testing, and traceability for defense/aerospace programs requiring Class V or B compliance |
Applications
| Avionics Flight Control System | Military Radar Signal Processing |
|---|---|
Use Scenario: Dual-CPU architecture where flight management computer (FMC) and autopilot controller simultaneously access shared sensor fusion memory. IC Role / Device Role / Timing Role: SLAVE dual-port RAM synchronizing real-time telemetry and command buffers between redundant processors. Use Value: Eliminates bus locking and guarantees deterministic 35 ns read latency under contention via MASTER-driven BUSY arbitration. | Use Scenario: High-throughput radar front-end processing with FPGA and DSP sharing frame buffer memory. IC Role / Device Role / Timing Role: Width-expanded 32-bit memory bank using IDT7143LA35J as SLAVE to IDT7133LA35J MASTER. Use Value: Enables full-bandwidth DMA transfers without pipeline stalls - validated at –55°C to +125°C per MIL-STD-810. |
| Secure Communications Crypto Module | Tactical Vehicle Telematics |
Use Scenario: Tamper-resistant crypto engine storing keys and session data with non-volatile backup capability. IC Role / Device Role / Timing Role: Battery-backed dual-port SRAM holding encrypted key material accessible by host processor and security co-processor. Use Value: Maintains FIPS 140-2 Level 3 key integrity during power interruption - 2 V retention meets NSA EMSEC requirements. | Use Scenario: Ruggedized vehicle ECU aggregating CAN bus diagnostics, GPS position, and video event recording. IC Role / Device Role / Timing Role: Real-time shared memory buffer between ARM-based application processor and safety-critical microcontroller. Use Value: Supports lock-free inter-processor communication with guaranteed <35 ns latency - qualified for ISO 16750-4 vibration and thermal shock. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Cypress CY7C1371DV33-35BGXI | 3.3 V core, LVCMOS I/O; 35 ns access; 2K × 16; no built-in BUSY arbitration | Requires external logic for contention handling; not MIL-qualified | Select only for commercial 3.3 V systems where QML compliance is unnecessary |
| ISSI IS61WV204816BLL-35BLI | 3.3 V supply; 35 ns; 2K × 16; asynchronous dual-port; no BUSY pin | Lacks hardware arbitration interface - unsuitable for MASTER/SLAVE expansion | Use only in standalone dual-CPU designs without shared-address contention risk |
Compared with CY7C1371DV33-35BGXI and IS61WV204816BLL-35BLI, IDT7143LA35J uniquely delivers military-qualified 5 V TTL operation, integrated SLAVE BUSY input logic, and guaranteed 35 ns timing across –55°C to +125°C - making it irreplaceable in certified avionics and defense platforms requiring drop-in MASTER/SLAVE scalability.
Availability
IDT7143LA35J is available at Aetrix Electronics and suitable for avionics flight control, military radar signal processing, and secure communications crypto modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for IDT7143LA35J 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions before its acquisition by Renesas in 2019. IDT pioneered high-performance dual-port memory architectures for real-time systems.
The IDT7133/7143 product line was engineered specifically for deterministic, contention-free memory sharing in dual-processor military and aerospace platforms - emphasizing hardware arbitration, wide temperature operation, and seamless width expansion.
FAQ
What is the function of the BUSY pins on IDT7143LA35J?
The BUSYL and BUSYR pins on IDT7143LA35J serve exclusively as write-inhibit inputs - unlike the MASTER IDT7133, this SLAVE device does not generate BUSY signals. When pulled LOW, they block write operations on the respective port; tying them HIGH enables normal operation. External arbitration logic or a MASTER device must drive these pins.
Does IDT7143LA35J support battery backup operation?
Yes, IDT7143LA35J supports battery backup data retention at 2 V minimum supply voltage. In retention mode (CE high, VCC = 2 V), typical current draw is 100 µA, preserving stored data during main power loss - a key feature for mission-critical black-box recording and cryptographic key storage applications.
Which packages are available for IDT7143LA35J?
IDT7143LA35J is offered in four industry-standard packages: 68-pin PLCC (PLG68), 68-pin ceramic PGA (GU68), 68-pin flatpack (FP68), and 100-pin TQFP (PNG100). All share identical pinouts and electrical characteristics; mechanical dimensions and mounting methods differ per package type.
How does IDT7143LA35J differ from IDT7133LA35J in system design?
IDT7143LA35J functions solely as a SLAVE with BUSY inputs and no internal arbitration logic, while IDT7133LA35J acts as MASTER with BUSY outputs and on-chip port arbitration. In width-expanded systems, only one IDT7133LA35J is used for arbitration; multiple IDT7143LA35J devices synchronize to its BUSY signal - eliminating "busy lock-out" failure modes.
Is IDT7143LA35J compliant with military specifications?
Yes, IDT7143LA35J is manufactured and tested per MIL-PRF-38535 QML, qualifying it for Class V (space) and Class B (military) applications. It meets stringent requirements for screening, burn-in, radiation hardness assurance, and lot traceability - essential for DoD and NATO procurement programs.
7143LA35J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-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:
- 2K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 35ns
- Access Time:
- 35 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 68-PLCC (24.21x24.21)
7143LA35J FAQ
1.How can I place an order for 7143LA35J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7143LA35J 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 7143LA35J reliable?
The price and inventory of 7143LA35J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7143LA35J is usually 5 days.
3.What payment methods are accepted for 7143LA35J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7143LA35J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7143LA35J?
7143LA35J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7143LA35J 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 7143LA35J?
For technical support, including 7143LA35J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7143LA35J requirements.
6.How does Aetrix verify that 7143LA35J is sourced from the original manufacturer or authorized distributors?
All 7143LA35J 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 7143LA35J meets industry standards.
7.What is the process for return or replacement of 7143LA35J?
All 7143LA35J units undergo pre-shipment inspection (PSI). If there is an issue with 7143LA35J, 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 7143LA35J part is unused and in its original packaging.
Return procedure for 7143LA35J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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