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Product Detailed Parameters
- Description：IC SRAM 256KBIT PARALLEL 28DIP
- Series：-
- Mfr：Alliance Memory, Inc.
- Package：Tube
- Memory Type：Volatile
- Memory Format：SRAM
- Technology：SRAM - Single Port, Asynchronous
- Memory Size：256Kbit
- Memory Organization：32K x 8
- Memory Interface：Parallel
- Clock Frequency：-
- Write Cycle Time - Word, Page：15ns
- Voltage - Supply：2.7V ~ 5.5V
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Through Hole
- Package / Case：28-DIP (0.300", 7.62mm)
- Supplier Device Package：28-PDIP
- Access Time：15 ns
- Grade：-
- Qualification：-
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Overview
The AS7C256C-15PCN is a 256 Kbit (32K x 8) asynchronous static random-access memory manufactured by Alliance Memory. It features a parallel interface with a maximum access time of 15 ns. The device operates within a supply voltage range of 2.7 V to 5.5 V and draws a maximum current of 140 mA. Designed for commercial temperature applications, it functions between 0°C and +70°C. The component utilizes a 28-pin PDIP package suitable for through-hole mounting.
Feature Summary
- Asynchronous parallel SRAM architecture providing fast data access
- Wide operating voltage range supporting 2.7V to 5.5V systems
- Through-hole compatible 28-pin PDIP physical packaging
Applications
- Commercial electronic equipment requiring volatile data storage
- Industrial control systems operating in standard temperature environments
- Embedded memory solutions for microcontroller-based designs
Procurement Notes
Verify the specific suffix 'PCN' against official datasheets to confirm the 28-pin PDIP package and commercial temperature grade. Ensure the design supports the specified 2.7V to 5.5V supply range and 140mA current draw. Confirm that through-hole assembly methods are compatible with the PCB layout requirements for this component type.
Selection Notes
Select this component when a 32K x 8 organization is required with 15ns speed in a through-hole package. Compare against TSOP or SOJ variants if surface-mount technology is preferred. Consider the 2.7V minimum voltage requirement for low-power applications versus the 5V standard logic levels typically used in commercial circuits.
Part Context
This part belongs to the AS7C256C series of high-speed CMOS SRAMs from Alliance Memory. It shares architectural similarities with other members of the family but differs in package style and voltage specifications compared to lower-voltage or surface-mount alternatives like the AS7C256A series.
Replacement Considerations
Direct pin-compatible replacements may include other AS7C256C variants with different packages, such as TSOP or SOJ options, provided the voltage and speed requirements match. Verify electrical characteristics carefully when substituting.
