CY27C256-70JC Overview
The CY27C256-70JC is a high-performance 256K-bit (32K x 8-bit) CMOS Static Random Access Memory (SRAM) designed for fast and reliable data storage in industrial and embedded applications. Featuring a 70ns access time, this memory device offers rapid data retrieval ideal for system memory buffers, cache memory, and microprocessor support. Its low power consumption and stable operation under various conditions make it a preferred choice among engineers requiring durable and efficient SRAM solutions. Available in a JEDEC-standard 28-pin dual in-line package (DIP), this SRAM supports single 5V power supply operation, aligning with common system voltage requirements. For detailed sourcing and support, visit IC Manufacturer.
CY27C256-70JC Technical Specifications
| Parameter | Specification |
|---|---|
| Memory Size | 256K-bit (32,768 x 8-bit) |
| Access Time | 70 ns |
| Operating Voltage | 5 V ?? 10% |
| Package Type | 28-pin DIP |
| Power Supply Current (Operating) | 35 mA (typical) |
| Standby Current | 100 ??A (max) |
| Data Retention Voltage | 2 V (min) |
| Operating Temperature Range | 0??C to +70??C |
| Input/Output Configuration | TTL compatible I/O |
CY27C256-70JC Key Features
- Fast 70 ns access time: Enables rapid data read/write cycles, improving overall system throughput in timing-critical applications.
- Low power consumption: Minimizes power usage during active and standby modes, extending device longevity and reducing thermal load.
- Stable CMOS technology: Ensures high noise immunity and reliable operation across a wide temperature range, enhancing system robustness.
- JEDEC-standard 28-pin DIP package: Facilitates easy integration and replacement in existing designs without requiring specialized mounting hardware.
CY27C256-70JC Advantages vs Typical Alternatives
This SRAM device offers competitive advantages such as lower power consumption and faster access times compared to conventional bipolar SRAMs. Its CMOS design increases reliability and reduces heat generation, making it suitable for industrial applications where stability and efficiency are critical. Additionally, the 5 V single supply operation simplifies power management compared to multi-voltage alternatives.
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Typical Applications
- Cache memory for microprocessors: Provides high-speed temporary storage to improve CPU data access and system performance in embedded systems.
- Buffer memory in communication devices: Supports efficient data flow management in routers, switches, and other network equipment.
- Industrial control systems: Offers reliable non-volatile data storage for programmable logic controllers (PLCs) and automation devices.
- Data acquisition systems: Enables fast sampling and storage of sensor data in measurement instruments and test equipment.
CY27C256-70JC Brand Info
The CY27C256-70JC is part of a well-established series of SRAM products known for their quality and reliability in industrial and commercial electronics. Manufactured under stringent quality control processes, this memory module adheres to JEDEC standards ensuring consistent performance and compatibility. The brand emphasizes durability, ease of integration, and broad application support, making the CY27C256-70JC a trusted choice for engineers and sourcing professionals worldwide.
FAQ
What is the typical power consumption of this SRAM during operation?
The device typically consumes around 35 mA during active operation, which is relatively low for SRAMs of this density and speed. This low power consumption helps reduce thermal stress and extends the operational life of the device in continuous-use environments.
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Is the CY27C256-70JC compatible with TTL logic levels?
Yes, the input and output pins of the SRAM are TTL compatible, allowing seamless interfacing with standard TTL logic circuits commonly found in industrial and embedded systems.
What package types are available for this SRAM?
This model is available in the 28-pin Dual In-line Package (DIP), following JEDEC standards. This package facilitates straightforward installation on through-hole PCBs and is ideal for prototyping or applications requiring socketable memory modules.




