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Renesas 5962-8855202XA
- Part No.:
- 5962-8855202XA
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 28-CDIP (0.600", 15.24mm)
- Datasheet:
-
5962-8855202XA.pdf
- Description:
- IC SRAM 256KBIT PARALLEL 28CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,271
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Product details
Overview
5962-8855202XA from Renesas Electronics is a military-grade 256K (32K × 8-bit) CMOS static RAM with 25ns access time, 5V ±10% supply, and MIL-STD-883 Class B compliance. It operates across –55°C to +125°C, features TTL-compatible I/O, and supports battery backup data retention at 2V. It serves as main memory or buffer in avionics, radar processors, and hardened embedded controllers.
For engineers reviewing the 5962-8855202XA datasheet, 5962-8855202XA pinout, 5962-8855202XA application, or 5962-8855202XA equivalent, key selection criteria include military temperature operation, 25ns read cycle timing, standby current of 20mA (S version), ceramic DIP packaging, and direct TTL interface compatibility without level-shifting.
Technical Context
The 5962-8855202XA implements a full CMOS static memory array with asynchronous parallel interface, using address decoding logic to select one of 32,768 8-bit words. Its control architecture relies on three independent enables - CS, WE, and OE - enabling flexible read/write gating and high-impedance bus management.
It supports two distinct power modes: active operation with dynamic current up to 135mA (at fMAX), and TTL-level standby (ISB = 20mA) triggered by CS HIGH. The device does not integrate refresh circuitry, write protection, or serial configuration - it is a pure parallel SRAM with deterministic, cycle-accurate timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 32K × 8-bit (262,144 bits), fixed parallel word width - no byte-select or partial-word access capability |
| Access Time (tAA) | 25ns max at –55°C to +125°C - defines minimum address-to-data valid delay under worst-case military thermal stress |
| Supply Voltage | 5V ±10% (4.5–5.5V) - requires stable regulated rail; no wide-VCC or dual-supply support |
| Operating Temperature | –55°C to +125°C - qualified per MIL-STD-883 Class B, including burn-in, hermeticity, and shock/vibe testing |
| Standby Current (ISB) | 20mA max when CS > VIH - enables system-level power gating without external regulators or sleep controllers |
| Input/Output Compatibility | TTL-compatible voltage thresholds (VIH = 2.2V min, VIL = 0.8V max) - interfaces directly with 5V TTL logic without buffers |
| Package Type | 28-pin 600-mil ceramic DIP (CD28) - hermetically sealed, leaded, through-hole mount for high-reliability board assembly |
Pinout & Package
5962-8855202XA is supplied in a 28-pin 600-mil ceramic dual in-line package (CD28), compliant with MIL-PRF-38535 and MIL-STD-883 Class B mechanical and environmental requirements. The package provides hermetic sealing, gold-plated leads, and thermal stability across extended military temperature excursions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A14 | Address Inputs | 15-bit binary address bus - selects one of 32,768 memory locations; no internal latching or address multiplexing |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel data path - high-impedance when CS or OE inactive; no separate input/output pins |
| CS | Chip Select | Active-low enable - places device in standby (high-Z I/O) when HIGH; primary power-gating signal |
| WE | Write Enable | Active-low write strobe - initiates write cycle only when CS and WE both LOW; controls data latch timing |
| OE | Output Enable | Active-low output gate - enables read data drive only when CS and OE both LOW; decouples read timing from CS |
| VCC | Power Supply | +5V ±10% supply pin - must be decoupled locally; no internal regulation or brown-out detection |
| GND | Ground Reference | Signal and power ground - single common reference for all inputs, outputs, and internal logic |
Key Features
| Feature | Design Value |
|---|---|
| MIL-STD-883 Class B qualification | Full screening including temperature cycling, mechanical shock, vibration, and hermeticity - required for flight-critical systems |
| 25ns military-grade access time | Guaranteed tAA ≤25ns over –55°C to +125°C - enables real-time buffering in radar pulse processing and telemetry acquisition |
| TTL-compatible I/O interface | VIH/VIL thresholds match legacy 5V TTL logic families - eliminates level translators in retrofitted or mixed-technology systems |
| Low-power standby mode | 20mA ISB at VCC max - reduces system power budget during idle intervals without requiring external power sequencing |
| Ceramic DIP packaging | 600-mil CD28 footprint - supports manual rework, high-reliability solder joints, and long-term storage stability in harsh environments |
Applications
| Avionics Flight Control Unit Memory | Radar Signal Processing Buffer |
|---|---|
Use Scenario: Stores real-time sensor fusion coefficients and actuator command tables in fly-by-wire computers operating in jet engine bays. IC Role / Device Role / Timing Role: Asynchronous SRAM providing deterministic 25ns read latency for closed-loop control loop execution at 40kHz. Use Value: MIL-STD-883 qualification ensures uninterrupted operation during extreme thermal transients and EMI exposure in aircraft bays. |
Use Scenario: Buffers digitized IF samples between ADC and FFT engine in airborne pulse-Doppler radar front ends. IC Role / Device Role / Timing Role: High-speed parallel memory staging raw 12-bit samples at 20MSPS with zero wait states. Use Value: 25ns tAA and 20ns tRC enable burst transfers aligned to radar PRF timing without pipeline stalls. |
| Tactical Radio Baseband Memory | Hardened Industrial PLC Data Log |
Use Scenario: Holds encryption keys, channel state tables, and protocol stacks in manpack radios deployed in desert or arctic conditions. IC Role / Device Role / Timing Role: Non-volatile-retention-capable SRAM (with external 2V backup) preserving critical crypto context during battery swaps. Use Value: Battery backup support down to 2V allows >10-year data retention in unattended field-deployed units. |
Use Scenario: Records process alarms and sensor timestamps in oil refinery control cabinets exposed to ambient swings from –40°C to +85°C. IC Role / Device Role / Timing Role: Deterministic write-cycle memory interfaced to microcontroller GPIOs for cyclic logging without DMA or cache coherency overhead. Use Value: Ceramic DIP package withstands decades of thermal cycling and sulfur-laden industrial atmospheres without solder joint fatigue. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-reliability SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 5962-8957201XA | Same 32K×8 organization, but 35ns access time and 600-mil CERDIP; lower screening grade (Class S vs Class B) | Suitable for non-flight-critical subsystems where 10ns timing margin is acceptable and full Class B isn't mandated | Select when cost reduction is prioritized over maximum speed and highest reliability tier |
| 5962-9213201XA | 256K×4 organization (two 256K×4 devices required for 32K×8 width); 25ns access; SOJ package | Requires PCB redesign for 28-pin SOJ footprint and dual-device data bus routing; lacks hermetic DIP robustness | Choose only if board space constraints prohibit DIP and SOJ assembly infrastructure is already in place |
Compared with 5962-8855202XA, 5962-8957201XA trades 10ns speed and Class B qualification for lower acquisition cost, while 5962-9213201XA sacrifices package ruggedness and simplifies width matching at the expense of layout redesign and reduced thermal reliability.
Availability
5962-8855202XA is available at Aetrix Electronics and suitable for avionics, radar signal processing, and tactical communications systems requiring stable component supply across extended military temperature ranges and long product lifecycles.
Supply support for 5962-8855202XA 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 specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and aerospace markets.
The 5962-8855202XA belongs to Renesas' legacy high-reliability SRAM product line, designed specifically for defense and aerospace applications demanding MIL-STD-883 qualification, extended temperature operation, and hermetic packaging.
FAQ
What is the guaranteed maximum access time for 5962-8855202XA over its full military temperature range?
The 5962-8855202XA guarantees a maximum address access time (tAA) of 25ns across its full operating temperature range of –55°C to +125°C, as verified per MIL-STD-883 test methods. This value is production-tested and applies to all units shipped under this part number, with no derating required at temperature extremes.
Does 5962-8855202XA support battery backup data retention, and what voltage is required?
No - the 5962-8855202XA is the standard-power "S" variant and does not support battery backup data retention. That feature is exclusive to the "L" (low-power) variants such as 5962-8855201XA. The 5962-8855202XA requires continuous VCC ≥4.5V to maintain data integrity.
Which package type is used for 5962-8855202XA, and is it hermetically sealed?
The 5962-8855202XA uses the 28-pin 600-mil ceramic dual in-line package (CD28), which is fully hermetically sealed per MIL-STD-883 requirements. This construction prevents moisture ingress and ensures long-term reliability in high-humidity or corrosive environments typical of military platforms.
Can 5962-8855202XA be interfaced directly with 5V TTL logic without level shifters?
Yes - the 5962-8855202XA features TTL-compatible input thresholds (VIH ≥2.2V, VIL ≤0.8V) and output drive capability (VOL ≤0.4V at 8mA, VOH ≥2.4V at –4mA), allowing direct connection to standard 5V TTL families such as 74LS and 74ALS without external translation circuitry.
What is the maximum allowable supply voltage for 5962-8855202XA, and what happens above that limit?
The absolute maximum supply voltage (VTERM) for 5962-8855202XA is +7.0V referenced to GND. Operation above 5.5V (the upper limit of recommended VCC = 5V ±10%) risks accelerated parametric drift and potential permanent damage. Sustained exposure to >7.0V violates absolute maximum ratings and may cause immediate functional failure.
5962-8855202XA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 28-CDIP (0.600", 15.24mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 256Kbit
- Memory Organization:
- 32K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 28-CDIP
5962-8855202XA FAQ
1.How can I place an order for 5962-8855202XA through Aetrix?
Please submit a Request for Quotation (RFQ) for 5962-8855202XA 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 5962-8855202XA reliable?
The price and inventory of 5962-8855202XA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5962-8855202XA is usually 5 days.
3.What payment methods are accepted for 5962-8855202XA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5962-8855202XA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5962-8855202XA?
5962-8855202XA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5962-8855202XA 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 5962-8855202XA?
For technical support, including 5962-8855202XA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5962-8855202XA requirements.
6.How does Aetrix verify that 5962-8855202XA is sourced from the original manufacturer or authorized distributors?
All 5962-8855202XA 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 5962-8855202XA meets industry standards.
7.What is the process for return or replacement of 5962-8855202XA?
All 5962-8855202XA units undergo pre-shipment inspection (PSI). If there is an issue with 5962-8855202XA, 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 5962-8855202XA part is unused and in its original packaging.
Return procedure for 5962-8855202XA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5962-8855202XA Tags
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