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Renesas 5962-8855201UA
- Part No.:
- 5962-8855201UA
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 28-CDIP (0.300", 7.62mm)
- Datasheet:
-
5962-8855201UA.pdf
- Description:
- IC SRAM 256KBIT PARALLEL 28CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,047
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Product details
Overview
5962-8855201UA from Renesas Electronics is a 256K (32K × 8-bit) military-grade CMOS static RAM with 25ns access time, TTL-compatible I/O, and full MIL-STD-883 Class B compliance for operation from –55°C to +125°C. It features low-power standby (20mA), battery backup data retention at 2V, and is packaged in a 28-pin 600-mil ceramic DIP (CD28) for high-reliability avionics and defense systems.
For engineers reviewing the 5962-8855201UA datasheet, 5962-8855201UA pinout, 5962-8855201UA application, or 5962-8855201UA equivalent, key selection criteria include military temperature qualification, 25ns read cycle timing, CS-controlled standby entry, 2V data retention capability, and ceramic DIP packaging for hermetic reliability in harsh environments.
Technical Context
The 5962-8855201UA implements a fully decoded 15-bit address space (A0–A14) driving a 262,144-bit memory array with bidirectional 8-bit data I/O (I/O0–I/O7). Its control logic uses three independent active-low enables-CS, WE, and OE-with defined priority: CS gates both read and write operations, while OE enables output drivers only during reads and WE controls write latching.
Timing behavior is strictly defined per MIL-STD-883: tAA = 25ns max, tRC = 25ns, tACS = 25ns, and tCHZ = 11ns max under military conditions (–55°C to +125°C, VCC = 5.0V ±10%). Standby current ISB is guaranteed ≤20mA (S version) with CS > VIH, and full CMOS-level standby (ISB1) draws ≤20mA when CS > VHC and f = 0.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 32K × 8-bit (262,144 bits), single-port SRAM with byte-wide I/O |
| Access Time (tAA) | 25ns maximum at –55°C to +125°C - ensures deterministic timing in flight-critical systems |
| Supply Voltage | 5.0V ±10% - compatible with legacy 5V TTL/CMOS logic rails without level shifting |
| Operating Temperature | –55°C to +125°C - qualified per MIL-STD-883 Class B for extended environmental survivability |
| Data Retention | 2V minimum VCC - enables battery-backed operation during main power loss in mission-critical hold mode |
| Standby Current (ISB) | ≤20mA at VCC max - reduces system-level power draw during idle without disabling memory state |
| Package | 28-pin 600-mil ceramic DIP (CD28) - hermetically sealed, high-reliability package for aerospace use |
Pinout & Package
5962-8855201UA 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 screening requirements. The package provides hermetic sealing, low thermal resistance, and long-term stability under thermal cycling and humidity exposure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A14 | Address Inputs | 15-bit parallel address bus accepting TTL-compatible levels; fully decoded to select one of 32,768 locations |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit TTL-compatible I/O lines; high-impedance when CS HIGH or OE HIGH during reads, or WE HIGH during writes |
| CS | Chip Select | Active-low master enable: disables all internal functions and forces standby when HIGH; required LOW for any access |
| WE | Write Enable | Active-low write control: latches data on I/O bus into memory when CS and WE are both LOW |
| OE | Output Enable | Active-low output control: enables I/O drivers only during read cycles; no effect during writes |
| VCC | Power Supply | +5V ±10% supply input; powers core logic and I/O buffers; decoupling required per MIL-STD-1399 |
| GND | Ground Reference | Signal and power ground reference plane; must be connected to system common ground with low-inductance path |
Key Features
| Feature | Design Value |
|---|---|
| MIL-STD-883 Class B Qualification | Full screening including burn-in, temperature cycling, and hermeticity testing - certifies suitability for flight hardware |
| 2V Data Retention | Retains stored data with VCC as low as 2.0V - enables seamless transition to backup battery without volatile loss |
| TTL-Compatible I/O | VIH = 2.2V min, VIL = 0.8V max - interoperates directly with legacy 5V TTL microprocessors and peripherals |
| CS-Controlled Standby Mode | Automatically enters low-power state when CS goes HIGH - eliminates need for external power management logic |
| 25ns Military-Speed Timing | tAA/tRC = 25ns max across full –55°C to +125°C range - supports real-time processing in radar and telemetry subsystems |
Applications
| Avionics Flight Control Memory | Tactical Radios Buffer Storage |
|---|---|
|
Use Scenario: Storing real-time sensor fusion data and control command history in fly-by-wire flight computers. IC Role / Device Role / Timing Role: Nonvolatile shadow RAM holding critical state variables during processor reset or power interruption. Use Value: 2V data retention ensures zero data loss during transient brownouts; 25ns access supports 40MHz CPU bus synchronization. |
Use Scenario: Temporary packet buffering and encryption key storage in secure HF/VHF manpack radios operating in extreme desert or arctic conditions. IC Role / Device Role / Timing Role: High-reliability SRAM interfacing directly with TI C6000 DSPs via 8-bit parallel bus. Use Value: MIL-STD-883 Class B qualification guarantees operation at –55°C and +125°C; ceramic DIP prevents moisture ingress during field deployment. |
| Missile Guidance System Cache | Spacecraft Onboard Telemetry Buffer |
|
Use Scenario: Holding intermediate guidance calculations and inertial measurement unit (IMU) calibration coefficients during boost phase. IC Role / Device Role / Timing Role: Low-latency, radiation-tolerant memory supporting deterministic interrupt response in closed-loop guidance loops. Use Value: 25ns tAA enables sub-40ns worst-case instruction fetch latency; standby current ≤20mA extends battery life during coast phase. |
Use Scenario: Capturing and staging housekeeping telemetry before downlink transmission in LEO satellite payloads. IC Role / Device Role / Timing Role: Radiation-hardened-adjacent memory buffer interfaced to FPGA-based telemetry controllers. Use Value: Ceramic DIP package withstands 50,000+ thermal cycles; 2V retention allows safe hold during solar array eclipses lasting >90 minutes. |
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 and CD28 package, but rated for 35ns access (tAA = 35ns max) and wider voltage tolerance (4.5–5.5V) | Suitable for less timing-critical subsystems where 25ns is not required; lower cost due to relaxed speed binning | Select when system timing budget allows ≥35ns access and full MIL-STD-883 Class B is still mandatory |
| 5962-9213201MXA | 256K × 4-bit organization (two 256K×4 devices required for 8-bit bus), 28-pin SOJ package, 25ns speed, same temp range | Requires board-level redesign for 4-bit interface; SOJ offers smaller footprint but lower hermeticity than ceramic DIP | Choose only if PCB space constraints prohibit CD28 and dual-device routing is acceptable |
Compared with 5962-8855201UA, 5962-8957201XA trades 10ns of speed margin for cost efficiency in non-real-time modules, while 5962-9213201MXA sacrifices package robustness and increases component count to achieve footprint reduction - neither offers direct pin-to-pin replacement.
Availability
5962-8855201UA is available at Aetrix Electronics and suitable for avionics flight control memory, missile guidance system cache, and spacecraft onboard telemetry buffer applications requiring stable component supply across extended military lifecycle programs.
Supply support for 5962-8855201UA 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 markets.
The 5962-8855201UA belongs to Renesas' legacy high-reliability SRAM product line, engineered specifically for defense and space applications demanding MIL-STD-883 qualification, hermetic packaging, and guaranteed performance across extreme temperature ranges.
FAQ
What is the maximum operating temperature range certified for 5962-8855201UA?
The 5962-8855201UA is fully qualified per MIL-STD-883 Class B for continuous operation from –55°C to +125°C. This rating is verified through temperature cycling, steady-state bias, and parametric testing across the full range - not extrapolated. All AC and DC specifications in the Renesas datasheet (Rev. Aug.06.20) apply within this envelope. The 5962-8855201UA maintains tAA ≤25ns and ISB ≤20mA throughout this span.
Does 5962-8855201UA support true battery backup operation below 5V?
Yes - the 5962-8855201UA supports guaranteed data retention at VCC = 2.0V minimum, as specified in Table 11 (Data Retention Characteristics). In this mode, ICCDR is ≤500μA (military grade), enabling operation from primary lithium or NiCd backup cells without regulation. The 5962-8855201UA retains full memory contents indefinitely at 2V as long as ambient temperature remains within –55°C to +125°C and no write cycles occur.
Is 5962-8855201UA pin-compatible with commercial-grade IDT71256L25DB?
No - although both share the same CD28 package and 28-pin layout, the 5962-8855201UA incorporates additional MIL-STD-883 screening, tighter parameter tolerances (e.g., tCHZ = 11ns vs. 15ns), and enhanced process controls that preclude guaranteed interchangeability. The 5962-8855201UA is a distinct QML-V qualified part; substituting it for IDT71256L25DB requires requalification per DO-254 or MIL-HDBK-217.
What is the meaning of "S" suffix in 5962-8855201UA's ordering code?
The "S" in 5962-8855201UA denotes the standard-power variant of the 71256 family, distinguishing it from the low-power "L" variant (e.g., 5962-8855201LA). The "S" version draws ≤135mA dynamic current (ICC) and ≤20mA standby current (ISB), optimized for systems where speed takes precedence over ultra-low quiescent power. The 5962-8855201UA uses the same die as IDT71256S25DB but undergoes full QML-V flow.
Can 5962-8855201UA be used with 3.3V logic interfaces?
No - the 5962-8855201UA is strictly a 5V-only device. Its input thresholds (VIH = 2.2V min, VIL = 0.8V max) and output drive (VOH ≥2.4V at –4mA, VOL ≤0.4V at 8mA) are specified only for VCC = 4.5–5.5V. Interfacing with 3.3V systems requires level translation; the 5962-8855201UA does not support mixed-voltage operation or I/O tolerance outside its 5V rail.
5962-8855201UA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 28-CDIP (0.300", 7.62mm)
- 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:
- 100ns
- Access Time:
- 100 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
5962-8855201UA FAQ
1.How can I place an order for 5962-8855201UA through Aetrix?
Please submit a Request for Quotation (RFQ) for 5962-8855201UA 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 5962-8855201UA reliable?
The price and inventory of 5962-8855201UA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5962-8855201UA is usually 5 days.
3.What payment methods are accepted for 5962-8855201UA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5962-8855201UA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5962-8855201UA?
5962-8855201UA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5962-8855201UA 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 5962-8855201UA?
For technical support, including 5962-8855201UA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5962-8855201UA requirements.
6.How does Aetrix verify that 5962-8855201UA is sourced from the original manufacturer or authorized distributors?
All 5962-8855201UA 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 5962-8855201UA meets industry standards.
7.What is the process for return or replacement of 5962-8855201UA?
All 5962-8855201UA units undergo pre-shipment inspection (PSI). If there is an issue with 5962-8855201UA, 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 5962-8855201UA part is unused and in its original packaging.
Return procedure for 5962-8855201UA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5962-8855201UA Tags
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