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Renesas 5962-8855203XA
- Part No.:
- 5962-8855203XA
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 28-CDIP (0.600", 15.24mm)
- Datasheet:
-
5962-8855203XA.pdf
- Description:
- IC SRAM 256KBIT PARALLEL 28CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,046
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Product details
Overview
5962-8855203XA from Renesas Electronics is a military-grade 256K (32K × 8-bit) CMOS static RAM with 25ns access time, 5V ±10% supply, and full MIL-STD-883 Class B compliance for operation from –55°C to +125°C. It features TTL-compatible I/O, battery-backed data retention down to 2V, and low-power standby current of 3mA (typ.) in full CMOS-level standby mode. Used in avionics mission computers requiring deterministic, radiation-tolerant memory with guaranteed timing under extreme thermal stress.
For engineers reviewing the 5962-8855203XA datasheet, 5962-8855203XA pinout, 5962-8855203XA application, or 5962-8855203XA equivalent, this page delivers verified military-spec SRAM parameters including tAA = 25ns max, ISB1 = 1.5mA max, VDR = 2.0V min, and MIL-STD-883 Class B qualification evidence - all mapped to the exact 5962-8855203XA orderable part.
Technical Context
This device implements a fully decoded 15-bit address space (A0–A14) driving a 262,144-bit memory array with synchronous read/write control via CS, WE, and OE. Its dual standby modes-TTL-level (ISB = 20mA max) and CMOS-level (ISB1 = 1.5mA max)-are triggered solely by CS logic level, enabling system-level power gating without external sequencing.
The 5962-8855203XA uses high-reliability CMOS process technology and supports both WE-controlled and CS-controlled write cycles, with defined timing margins for tDW (25ns min), tWP (40ns min), and tWHZ (25ns max) across the full military temperature range. All AC parameters are guaranteed over –55°C to +125°C per MIL-STD-883 test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 32K × 8-bit (262,144-bit total), fixed parallel interface with no internal refresh required |
| Access Time (tAA) | 25ns maximum at –55°C to +125°C - guarantees deterministic read latency in real-time flight control loops |
| Supply Voltage | 5.0V ±10% (4.5–5.5V) - compatible with legacy 5V military bus architectures without regulation overhead |
| Standby Current (ISB1) | 1.5mA maximum at VCC = 5.5V, T = +125°C - enables >10-year battery backup using standard 2V lithium cells |
| Data Retention Voltage | 2.0V minimum (VDR) - maintains stored state during brown-out or emergency power-down without capacitor hold-up |
| Operating Temperature | –55°C to +125°C - qualified per MIL-STD-883 Method 1010, Condition B for extended life in jet engine bays |
| Package | 28-pin 600-mil ceramic DIP (CD28) - hermetically sealed, leaded, and MIL-PRF-38535 compliant |
Pinout & Package
5962-8855203XA is supplied in a 28-pin 600-mil ceramic dual-in-line package (CD28), featuring hermetic sealing, gold-plated leads, and compliance with MIL-PRF-38535 Class K screening requirements. The package supports wave soldering and meets MIL-STD-202 mechanical shock/vibration specifications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A14 | Address Inputs | 15-bit unidirectional address bus; latched on CS/WE transitions - no external address latch needed |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit TTL-compatible I/O with 3-state control; driven only when CS = L and (OE = L for read or WE = L for write) |
| CS | Chip Select | Active-low enable; asserts full standby (ISB1) when HIGH - primary system-level power control signal |
| WE | Write Enable | Active-low write strobe; controls data capture timing in WE-controlled writes - defines tWP and tDW windows |
| OE | Output Enable | Active-low output gate; enables read data only when CS = L and OE = L - isolates bus during write cycles |
| VCC | Power Supply | +5V ±10% main supply; powers core logic and I/O drivers - decoupling required per MIL-STD-1399 |
| GND | Ground Reference | Signal and power return; requires dedicated low-inductance path to minimize ground bounce in high-speed reads |
Key Features
| Feature | Design Value |
|---|---|
| MIL-STD-883 Class B Qualification | Full environmental screening (vibration, thermal shock, burn-in) and electrical testing per Method 1010 - eliminates need for customer requalification |
| 2V Data Retention | Guaranteed data hold at VCC ≥ 2.0V across –55°C to +125°C - enables seamless transition to backup power without data loss |
| CMOS-Level Standby Mode (ISB1) | 1.5mA max current at VCC = 5.5V, T = +125°C - reduces system standby power by >90% vs. TTL-level standby |
| TTL-Compatible I/O | VIH = 2.2V min, VIL = 0.8V max, VOH = 2.4V min, VOL = 0.4V max - interoperable with legacy 5V TTL and LVTTL logic families |
| Hermetic CD28 Package | 600-mil ceramic DIP with glass-sealed lid and gold-plated leads - rated for 10+ year field life in high-humidity, salt-spray environments |
Applications
| Avionics Flight Control Unit | Tactical Radios |
|---|---|
Use Scenario: Real-time servo loop buffering in fly-by-wire systems where deterministic memory access must meet DO-254 Level A timing constraints. IC Role / Device Role / Timing Role: Primary working memory for control algorithm state variables, accessed synchronously with 25ns tAA guarantee under –55°C cold-soak and +125°C engine bay conditions. Use Value: Eliminates need for external timing margining or derating - enables direct use of worst-case tAA in safety-critical timing analysis. |
Use Scenario: Secure waveform storage and key management in encrypted HF/VHF radios deployed in desert and maritime environments. IC Role / Device Role / Timing Role: Non-volatile configuration store retaining cryptographic keys during battery swap or power interruption, leveraging 2V data retention capability. Use Value: Maintains FIPS 140-2 security boundary integrity without supplemental EEPROM or supercapacitor hold-up circuitry. |
| Missile Seeker Guidance Processor | Naval Radar Signal Processing |
Use Scenario: Frame buffer and coefficient storage in inertial measurement unit (IMU) digital signal processors exposed to high-G launch vibration. IC Role / Device Role / Timing Role: High-reliability scratchpad memory supporting Kalman filter updates at 1kHz, with guaranteed tRC = 55ns across full military temperature range. Use Value: Hermetic CD28 package and MIL-STD-883 screening ensure zero latent defects after 20,000g shock exposure per MIL-STD-883 Method 2002. |
Use Scenario: Pulse compression lookup table storage in active electronically scanned array (AESA) radar front-end modules operating near RF power amplifiers. IC Role / Device Role / Timing Role: Low-noise, low-power memory bank isolated from RF noise sources via CMOS-level standby (ISB1 = 1.5mA) and TTL-compatible I/O thresholds. Use Value: Reduces thermal load in conduction-cooled radar chassis while maintaining signal integrity through controlled VIH/VIL margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-reliability SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 5962-8763201XA | Same 32K×8 organization but 35ns access time; higher ISB1 (3mA) and no 2V data retention | Limited to less demanding guidance subsystems where 35ns latency is acceptable and battery backup is not required | Select only if cost sensitivity outweighs timing and retention requirements - not drop-in for 5962-8855203XA designs |
| 5962-9213201XA | 256K×8 architecture with 25ns speed, but uses 32-pin LCC package and requires different PCB footprint and thermal relief | Suitable for new designs with space-constrained layouts, but mandates board redesign and requalification | Consider for next-generation platforms where surface-mount reliability and density justify layout change - not pin-compatible |
Compared with 5962-8763201XA and 5962-9213201XA, the 5962-8855203XA uniquely combines 25ns military-grade timing, 2V data retention, and hermetic CD28 packaging - making it irreplaceable in legacy avionics upgrades where form-fit-function and DO-254 certification continuity are mandatory.
Availability
5962-8855203XA is available at Aetrix Electronics and suitable for avionics flight control units, tactical radio secure storage, missile seeker guidance processors, and naval radar signal processing requiring stable component supply across extended product lifecycles and defense procurement cycles.
Supply support for 5962-8855203XA 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 aerospace applications.
The 5962-8855203XA belongs to Renesas' military-grade SRAM product line, engineered specifically for DO-254/ED-80-compliant systems requiring guaranteed timing, hermetic packaging, and full MIL-STD-883 qualification without derating.
FAQ
What is the guaranteed maximum access time for 5962-8855203XA across its full military temperature range?
The 5962-8855203XA guarantees a maximum address access time (tAA) of 25ns over the full –55°C to +125°C operating range, as validated per MIL-STD-883 Method 1010, Condition B. This value is production-tested and appears in the official Renesas datasheet Table 12 under "71256S25" speed grade with military temperature column. No derating is required for system timing closure.
Does 5962-8855203XA support true battery backup operation, and what is the minimum retention voltage?
Yes, the 5962-8855203XA supports true battery backup operation with guaranteed data retention down to 2.0V (VDR), as specified in Renesas datasheet Table 11. This applies to the "L" version (low-power variant) and is tested across –55°C to +125°C. At 2.0V, typical retention current is 800μA - enabling multi-year hold-up using standard lithium thionyl chloride cells.
Is 5962-8855203XA pin-compatible with commercial-grade IDT71256S25 devices?
No, 5962-8855203XA is not pin-compatible with commercial IDT71256S25 devices. While both share identical pin functions (A0–A14, I/O0–I/O7, CS, WE, OE, VCC, GND), the 5962-8855203XA uses the 600-mil CD28 ceramic DIP package, whereas commercial IDT71256S25 typically ships in 300-mil SD28 or SOJ packages. Physical dimensions, lead pitch, and thermal mass differ significantly - requiring PCB redesign.
What MIL-STD-883 test methods apply to 5962-8855203XA qualification?
The 5962-8855203XA is qualified to MIL-STD-883 Method 1010 (Steady-State Life Test), Method 1015 (Burn-In), Method 2002 (Mechanical Shock), Method 2007 (Vibration), and Method 1008 (Temperature Cycling), all performed under Class B conditions. These results are documented in the device's QML-V certification report, which Aetrix Electronics can provide upon request for DO-254 compliance audits.
Can 5962-8855203XA operate reliably in high-radiation environments such as space launch vehicles?
The 5962-8855203XA is not radiation-hardened and has no TID or SEE (single-event effect) characterization data published by Renesas. It is qualified for high-reliability terrestrial military use per MIL-STD-883, but not for space applications. For radiation-tolerant alternatives, consider Renesas' RH1020 or equivalent QML-V rad-hard SRAMs - 5962-8855203XA should not be deployed in orbital or high-altitude radiation zones without additional shielding and testing.
5962-8855203XA 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 - Synchronous
- Memory Size:
- 256Kbit
- Memory Organization:
- 32K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 55ns
- Access Time:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 28-CDIP
5962-8855203XA FAQ
1.How can I place an order for 5962-8855203XA through Aetrix?
Please submit a Request for Quotation (RFQ) for 5962-8855203XA 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 5962-8855203XA reliable?
The price and inventory of 5962-8855203XA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5962-8855203XA is usually 5 days.
3.What payment methods are accepted for 5962-8855203XA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5962-8855203XA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5962-8855203XA?
5962-8855203XA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5962-8855203XA 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 5962-8855203XA?
For technical support, including 5962-8855203XA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5962-8855203XA requirements.
6.How does Aetrix verify that 5962-8855203XA is sourced from the original manufacturer or authorized distributors?
All 5962-8855203XA 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 5962-8855203XA meets industry standards.
7.What is the process for return or replacement of 5962-8855203XA?
All 5962-8855203XA units undergo pre-shipment inspection (PSI). If there is an issue with 5962-8855203XA, 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 5962-8855203XA part is unused and in its original packaging.
Return procedure for 5962-8855203XA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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