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Renesas 7143SA35PF8
- Part No.:
- 7143SA35PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7143SA35PF8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,946
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Product details
Overview
7143SA35PF8 from IDT is a military-grade 2K × 16-bit dual-port static RAM configured as a SLAVE device in MASTER/SLAVE memory expansion systems, featuring 35ns maximum read cycle time, TTL-compatible 5V ±10% operation, and BUSY input functionality for hardware arbitration - used in real-time avionics data buffers requiring concurrent CPU and DSP access to shared memory.
For engineers reviewing the 7143SA35PF8 datasheet, 7143SA35PF8 pinout, 7143SA35PF8 application, or 7143SA35PF8 equivalent, this page delivers verified timing parameters (tRC = 35ns, tACE = 35ns), SLAVE-specific BUSY input behavior, 68-pin PLCC package mapping, and validated alternatives for width-expanded dual-port memory designs.
Technical Context
The 7143SA35PF8 operates as a SLAVE in IDT's MASTER/SLAVE dual-port architecture: its BUSY pin functions exclusively as an input to accept arbitration signals from a 7133SA MASTER, enabling synchronized 32-bit+ bus expansion without external logic. It lacks on-chip arbitration logic and does not drive BUSY output.
It supports fully asynchronous, independent read/write access on left and right ports with separate address (A0L–A10L / A0R–A10R), control (CEL/CER, R/WLUB/R/WRUB, OEL/OER), and 16-bit bidirectional I/O (I/O0L–I/O15L / I/O0R–I/O15R) - all compliant with TTL voltage levels under 5V ±10% supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16-bit (32,768 bits), organized as two independent 2K-word × 16-bit ports |
| Access Time (tRC) | 35ns max - defines minimum read cycle interval for guaranteed valid data at outputs |
| Supply Voltage | 5.0V ±10% (4.5V–5.5V) - single-rail TTL-compatible operation, no auxiliary supplies required |
| Operating Temperature | −55°C to +125°C - qualified per MIL-PRF-38535 QML for military embedded systems |
| Standby Current (ISB1) | 70mA max (both ports disabled, TTL-level inputs) - determines power budget during idle cycles |
| Dynamic Current (ICC) | 330mA max (both ports active, f = fMAX) - sets peak supply rail and decoupling requirements |
| Input Capacitance | 11pF max - constrains trace length and fanout in high-speed address/control routing |
Pinout & Package
7143SA35PF8 is packaged in a 68-pin PLCC (Plastic Leaded Chip Carrier), body size ≈ 0.95″ × 0.95″ × 0.17″, with dual-row gull-wing leads and pin 1 marked by corner notch. Both VCC and GND pins must be connected to ensure reliable operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low port selection; disables I/O drivers and reduces current to ISB1/ISB2 when HIGH |
| R/WLUB / R/WRUB | Upper Byte Read/Write Enable | Controls read/write direction for I/O8–I/O15 on respective port; enables byte-level granularity |
| R/WLLB / R/WRLB | Lower Byte Read/Write Enable | Controls read/write direction for I/O0–I/O7 on respective port; supports 8-bit sub-accesses |
| OEL / OER | Output Enable (Left / Right) | Tri-states I/O drivers independently of CE; allows shared bus contention management |
| BUSYL / BUSYR | Busy Input (Left / Right) | SLAVE-only function: asserts write inhibit when driven LOW by MASTER's open-drain BUSY output |
| A0L–A10L / A0R–A10R | Address Inputs (11-bit) | Selects one of 2K (2048) memory locations per port; no internal address latching |
| I/O0L–I/O15L / I/O0R–I/O15R | Data I/O (16-bit bidirectional) | True dual-port data path: simultaneous read on one port and write on the other is supported |
Key Features
| Feature | Design Value |
|---|---|
| SLAVE-only BUSY interface | Eliminates need for external arbitration logic when paired with 7133SA MASTER, reducing BOM count and PCB area in width-expanded systems |
| Independent byte-write control | Separate upper/lower byte enables per port allow partial-word writes without read-modify-write cycles, improving real-time deterministic latency |
| MIL-PRF-38535 QML compliance | Guarantees reliability and screening for flight-critical avionics, radar, and electronic warfare platforms operating across −55°C to +125°C |
| Asynchronous dual-port operation | Enables true concurrent access - e.g., CPU writes to left port while DSP reads same location from right port - with no clock domain synchronization overhead |
| Low-power standby modes | ISB3 = 4mA max (full CMOS standby) enables battery-backed retention in mission-critical holdover scenarios without external power management ICs |
Applications
| Avionics Data Buffering | Radar Signal Processing |
|---|---|
Use Scenario: Real-time buffering of sensor data between flight computer and display processor in MIL-STD-1553B-based aircraft systems. IC Role / Device Role / Timing Role: SLAVE dual-port RAM synchronizing data flow between dissimilar processors with independent timing domains. Use Value: 35ns tRC ensures sub-40ns latency for critical telemetry updates; BUSY input prevents corrupted writes during simultaneous access attempts. |
Use Scenario: Shared memory between radar front-end FPGA and signal analysis DSP in airborne pulse-Doppler radar. IC Role / Device Role / Timing Role: Width-expanded 32-bit memory node (with 7133SA MASTER) enabling parallel I/Q sample transfer. Use Value: Independent byte-write enables efficient packing of 12-bit ADC samples into 16-bit words without software overhead. |
| Electronic Warfare Memory | Military Communications Hub |
Use Scenario: Jamming waveform storage accessed concurrently by waveform generator and threat classifier in EW pods. IC Role / Device Role / Timing Role: SLAVE device in multi-chip 64-bit memory bank supporting deterministic low-latency read-after-write sequences. Use Value: −55°C to +125°C operation ensures reliability in uncooled pod environments; MIL-PRF-38535 screening validates radiation tolerance. |
Use Scenario: Secure key exchange buffer between crypto module and radio baseband processor in SATCOM terminals. IC Role / Device Role / Timing Role: Dual-port memory isolating cryptographic operations from RF scheduling logic via hardware-enforced access arbitration. Use Value: BUSY-driven write inhibition prevents key corruption during simultaneous encryption and channel handshaking operations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C133-35PC | 35ns access, 2K × 16, but lacks dedicated BUSY arbitration logic; requires external glue logic for MASTER/SLAVE expansion | Suitable for simpler dual-CPU systems without strict contention resolution requirements | Select when cost-sensitive designs can tolerate added board space and timing complexity for arbitration |
| IDT7133SA35PF8 | Same package and pinout, but MASTER variant with open-drain BUSY output and on-chip arbitration logic | Required as companion chip to enable 32-bit+ width expansion with 7143SA35PF8 SLAVE(s) | Must be used together with 7143SA35PF8 in any MASTER/SLAVE configuration; not interchangeable |
Compared with CY7C133-35PC, 7143SA35PF8 provides integrated hardware arbitration via BUSY input-eliminating external logic-and is MIL-qualified; compared with IDT7133SA35PF8, it serves only as SLAVE with no arbitration capability, enabling scalable, modular memory width expansion.
Availability
7143SA35PF8 is available at Aetrix Electronics and suitable for avionics data buffering, radar signal processing, and electronic warfare memory applications requiring stable component supply, long-term obsolescence management, and MIL-spec traceability.
Supply support for 7143SA35PF8 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
IDT (Integrated Device Technology) is a semiconductor company specializing in high-performance timing, memory, and interface solutions for aerospace, defense, and industrial markets.
The IDT7143 family was designed specifically as SLAVE dual-port SRAMs to pair with IDT7133 MASTER devices, enabling scalable, contention-free width expansion of 16-bit dual-port memory systems in mission-critical embedded platforms.
FAQ
What is the role of the BUSY pin on the 7143SA35PF8?
The BUSY pin on the 7143SA35PF8 functions exclusively as an input - unlike the MASTER 7133SA, which drives BUSY as an open-drain output. When pulled LOW by a 7133SA MASTER during address contention, it internally gates write signals to prevent conflicting writes. This makes the 7143SA35PF8 suitable only as a SLAVE in MASTER/SLAVE configurations.
Can the 7143SA35PF8 operate independently without a 7133SA MASTER?
Yes, the 7143SA35PF8 can operate as a standalone 2K × 16 dual-port SRAM without a MASTER. Its BUSY pins default to inactive (HIGH) when unused, allowing normal dual-port operation. However, hardware arbitration during simultaneous access to the same address requires external logic or firmware coordination - the built-in BUSY arbitration is only active when connected to a 7133SA MASTER.
What package type does the 7143SA35PF8 use, and are there thermal considerations?
The 7143SA35PF8 uses a 68-pin PLCC (Plastic Leaded Chip Carrier) package with dimensions approximately 0.95″ × 0.95″ × 0.17″. Its maximum power dissipation is 2.0W, and thermal design must account for ISB1 = 70mA (standby) and ICC = 330mA (active) under worst-case military temperature conditions (−55°C to +125°C), requiring adequate copper pour and airflow in sealed enclosures.
How does the 7143SA35PF8 differ from the LA version (e.g., 7143LA35PF8)?
The 7143SA35PF8 is the standard-power variant (active current ICC = 330mA max), while the 7143LA35PF8 is the low-power version optimized for battery backup - offering 2V data retention and ISB3 = 4µA typical full-standby current. The SA version prioritizes speed and drive strength; the LA version trades some performance for ultra-low quiescent power in holdover mode.
Is the 7143SA35PF8 pin-compatible with other IDT dual-port SRAMs like the 7133SA series?
Yes, the 7143SA35PF8 shares identical pinout and footprint with the 7133SA35PF8 and all other 7133/7143 variants in the same package (68-pin PLCC, PGA, Flatpack, or 100-pin TQFP). This allows direct PCB layout reuse across MASTER and SLAVE roles - only the part number and functional behavior (e.g., BUSY as input vs. output) differ.
7143SA35PF8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- 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:
- 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:
- 100-TQFP (14x14)
7143SA35PF8 FAQ
1.How can I place an order for 7143SA35PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7143SA35PF8 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 7143SA35PF8 reliable?
The price and inventory of 7143SA35PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7143SA35PF8 is usually 5 days.
3.What payment methods are accepted for 7143SA35PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7143SA35PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7143SA35PF8?
7143SA35PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7143SA35PF8 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 7143SA35PF8?
For technical support, including 7143SA35PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7143SA35PF8 requirements.
6.How does Aetrix verify that 7143SA35PF8 is sourced from the original manufacturer or authorized distributors?
All 7143SA35PF8 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 7143SA35PF8 meets industry standards.
7.What is the process for return or replacement of 7143SA35PF8?
All 7143SA35PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7143SA35PF8, 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 7143SA35PF8 part is unused and in its original packaging.
Return procedure for 7143SA35PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7143SA35PF8 Tags
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AT24C02C-XHM-T
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