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Renesas 7164S100DB
- Part No.:
- 7164S100DB
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 28-CDIP (0.600", 15.24mm)
- Datasheet:
-
7164S100DB.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 28CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,444
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Product details
Overview
7164S100DB from Renesas Electronics is a 64K (8K × 8-bit) high-speed CMOS static RAM with 100ns maximum address access time, TTL-compatible I/O, single 5V supply operation, and three-state outputs. It features automatic low-power standby mode triggered by chip select logic and is designed for military-grade embedded systems requiring reliable data retention and deterministic timing in harsh environments.
For engineers reviewing the 7164S100DB datasheet, 7164S100DB pinout, 7164S100DB application, or 7164S100DB equivalent, this page delivers verified technical context, military-qualified timing behavior, package-specific pin mapping, real-world use cases in avionics and defense computing, and validated alternative parts for continuity planning.
Technical Context
The 7164S100DB implements fully static asynchronous architecture-no clocks or refresh required-and uses dual chip select (CS1/CS2) logic to enable precise power-down control: CS1 HIGH or CS2 LOW forces entry into low-power standby mode (ISB), reducing ICC to ≤2mA at 5V. Its memory array is organized as 8,192 × 8 bits, with address decoding covering A0–A12.
Input and output circuits are directly TTL-compatible (VIH = 2.2V min, VIL = 0.8V max), supporting seamless integration into legacy 5V logic systems. The device supports WE-controlled and CS-controlled write cycles, with guaranteed tWC = 100ns and tWR1 = 100ns across the full military temperature range (−55°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8-bit (65,536 bits), enabling byte-wide data bus interfacing without external multiplexing |
| Access Time (tAA) | 100ns max at VCC = 5.0V ±10%, TA = −55°C to +125°C - guarantees deterministic read latency in real-time military control loops |
| Supply Voltage | 4.5V to 5.5V - compatible with standard 5V regulated rails; no external voltage translation needed |
| Standby Current (ISB) | ≤2mA max - enables low-quiescent-power operation during idle states in battery-backed or power-constrained platforms |
| Operating Temperature | −55°C to +125°C - qualified per MIL-STD-883 Class B for deployment in airborne, ground vehicle, and missile guidance systems |
| I/O Interface | TTL-compatible inputs/outputs (VIH ≥2.2V, VIL ≤0.8V) - interoperable with 74LS, 74F, and other legacy 5V logic families |
| Package | 28-pin 600-mil CERDIP (CD28) - hermetically sealed ceramic package for high-reliability, moisture-resistant operation |
Pinout & Package
7164S100DB is supplied in a 28-pin 600-mil CERDIP (CD28) package - a hermetic ceramic dual in-line package rated for extended military temperature operation and high reliability in vibration-prone or high-humidity environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A12 | Address Inputs | 13-bit address bus accepting full 8K address space; no internal latching - requires stable address prior to CS activation |
| I/O0–I/O7 | Bidirectional Data Bus | Three-state TTL-compatible data lines; high-impedance when CS inactive or OE HIGH during reads |
| CS1, CS2 | Chip Select Inputs | Active-LOW CS1 and active-HIGH CS2 form dual-enable logic; CS2 LOW overrides CS1 to force standby (ISB) |
| WE | Write Enable | Active-LOW signal controlling write cycle initiation; overlaps with CS1/CS2 to define valid write window |
| OE | Output Enable | Active-LOW control for output drivers; disables outputs (high-Z) when deasserted, enabling bus sharing |
| VCC, GND | Power Supply | Single 5V supply with dedicated ground; decoupling required within 1 inch of pins per MIL-STD-883 layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Automatic Standby Mode | Enters low-power ISB state when CS1 = HIGH or CS2 = LOW - eliminates need for external power management logic |
| MIL-STD-883 Class B Compliance | Fully tested to military screening standards including thermal cycling, mechanical shock, and burn-in - suitable for flight-critical hardware |
| Three-State Outputs | Enables direct connection to shared data buses without external bus transceivers or isolation logic |
| TTL-Compatible I/O | Eliminates level-shifting components in mixed-logic systems using 74-series or microprocessor-native 5V peripherals |
| Static Asynchronous Operation | No clock, no refresh, no wait states - simplifies timing design and reduces system-level jitter in deterministic real-time applications |
Applications
| Avionics Flight Control Unit | Tactical Radio Baseband Processing |
|---|---|
|
Use Scenario: Real-time storage of sensor fusion coefficients and actuator command buffers in fly-by-wire ECUs operating at −55°C to +125°C. IC Role / Device Role / Timing Role: Primary working RAM for deterministic interrupt servicing and control loop execution on MIL-STD-1553 or ARINC 429 interface processors. Use Value: 100ns tAA ensures sub-microsecond memory access latency critical for 1kHz control loop deadlines; CERDIP packaging withstands aircraft vibration and thermal shock. |
Use Scenario: Buffering encrypted voice packets and protocol stack state in handheld SINCGARS radios deployed in desert and arctic environments. IC Role / Device Role / Timing Role: Non-refreshing SRAM for volatile packet staging between RF front-end and encryption ASIC, synchronized via discrete control signals. Use Value: Dual CS logic enables rapid power gating between transmit/receive bursts; MIL-qualified ISB current (<2mA) extends battery life in manpack configurations. |
| Missile Guidance Inertial Measurement Unit | Ground Vehicle Mission Computer |
|
Use Scenario: Storing gyro/accelerometer calibration tables and navigation filter state variables in high-G launch environments. IC Role / Device Role / Timing Role: Radiation-tolerant, non-volatile-retention SRAM used for mission-critical runtime data where EEPROM wear-out or DRAM refresh failure is unacceptable. Use Value: Hermetic CD28 package prevents moisture ingress during rapid altitude changes; 100ns access supports Kalman filter updates at ≥200Hz. |
Use Scenario: Supporting legacy 80C86/80C186-based mission computers in armored vehicles undergoing thermal soak testing from −40°C to +85°C. IC Role / Device Role / Timing Role: Drop-in replacement for obsolete 28-pin SRAMs in fielded systems requiring zero PCB redesign and proven long-term supply. Use Value: Pin-identical compatibility with industry-standard 8K×8 SRAM footprints; TTL I/O eliminates adapter logic during sustainment upgrades. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62167EV30LL-100BAXI | 16M-bit (2M×8) density, 100ns access, 3.3V core (with 5V-tolerant I/O), SOIC-32 package | Higher density and lower voltage; not MIL-qualified; unsuitable for hermetic or −55°C operation | Select only for commercial/industrial upgrades where board space allows SOIC-32 and 3.3V infrastructure exists |
| AS6C1008-10TCIN | 64K×8, 100ns, 5V, industrial temp (−40°C to +85°C), 28-pin SOJ, non-MIL screened | Lacks MIL-STD-883 Class B qualification and extended −55°C rating; lower cost but reduced reliability assurance | Acceptable for non-safety-critical ground systems where full military screening is not mandated |
Compared with CY62167EV30LL-100BAXI and AS6C1008-10TCIN, the 7164S100DB uniquely delivers hermetic CERDIP packaging, −55°C capability, and MIL-STD-883 Class B compliance - making it irreplaceable in flight-qualified and weapon-system applications where environmental robustness is non-negotiable.
Availability
7164S100DB is available at Aetrix Electronics and suitable for avionics, tactical communications, and missile guidance systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 7164S100DB 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 delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.
The 7164S100DB belongs to Renesas' legacy high-reliability SRAM product line, engineered specifically for military and aerospace applications demanding guaranteed performance across extreme temperatures and mechanical stress conditions.
FAQ
What is the maximum operating temperature range for the 7164S100DB?
The 7164S100DB is rated for operation from −55°C to +125°C and is fully qualified to MIL-STD-883 Class B. This specification is confirmed in the Absolute Maximum Ratings table and Operating Temperature section of the Renesas datasheet revision Jul.30.20. No derating is required within this range, and the 100ns access time is guaranteed across the full span.
Does the 7164S100DB support battery backup operation?
No, the 7164S100DB does not support battery backup data retention. Only the 'L' variant (e.g., 7164L100DB) provides 2V data retention capability. The 'S' suffix denotes standard power operation without low-voltage retention - confirmed in the Features section and Ordering Information tables of the datasheet.
Is the 7164S100DB pin-compatible with other 28-pin 8K×8 SRAMs?
Yes, the 7164S100DB uses the industry-standard 28-pin 600-mil CERDIP (CD28) footprint and pinout defined for 8K×8 SRAMs, including identical A0–A12, I/O0–I/O7, CS1, CS2, WE, OE, VCC, and GND assignments. This enables direct substitution in legacy designs originally using IDT7164S or compatible parts.
What is the standby current consumption of the 7164S100DB?
The 7164S100DB draws ≤2mA typical standby current (ISB) when in low-power mode - activated by CS1 HIGH or CS2 LOW - at VCC = 5.0V and TA = +25°C. At maximum military temperature (+125°C), ISB remains ≤3mA, as specified in the DC Electrical Characteristics table under "ISB - Power Down Current".
Which package type does the 7164S100DB use, and is it hermetically sealed?
The 7164S100DB is packaged in a 28-pin 600-mil CERDIP (CD28), a ceramic dual in-line package with glass-sealed leads. It is hermetically sealed per MIL-STD-883 requirements, providing immunity to moisture ingress and long-term reliability in high-humidity or corrosive environments - explicitly stated in the Pin Configurations and Ordering Information sections.
7164S100DB 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:
- 64Kbit
- Memory Organization:
- 8K 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
7164S100DB FAQ
1.How can I place an order for 7164S100DB through Aetrix?
Please submit a Request for Quotation (RFQ) for 7164S100DB 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 7164S100DB reliable?
The price and inventory of 7164S100DB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7164S100DB is usually 5 days.
3.What payment methods are accepted for 7164S100DB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7164S100DB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7164S100DB?
7164S100DB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7164S100DB 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 7164S100DB?
For technical support, including 7164S100DB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7164S100DB requirements.
6.How does Aetrix verify that 7164S100DB is sourced from the original manufacturer or authorized distributors?
All 7164S100DB 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 7164S100DB meets industry standards.
7.What is the process for return or replacement of 7164S100DB?
All 7164S100DB units undergo pre-shipment inspection (PSI). If there is an issue with 7164S100DB, 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 7164S100DB part is unused and in its original packaging.
Return procedure for 7164S100DB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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