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Product Detailed Parameters
- Description：IC SRAM 256KBIT PARALLEL 28SOJ
- Series：-
- Mfr：Alliance Memory, Inc.
- Package：Tape & Reel (TR)
- Memory Type：Volatile
- Memory Format：SRAM
- Technology：SRAM - Asynchronous
- Memory Size：256Kbit
- Memory Organization：32K x 8
- Memory Interface：Parallel
- Clock Frequency：-
- Write Cycle Time - Word, Page：15ns
- Voltage - Supply：4.5V ~ 5.5V
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：28-BSOJ (0.300", 7.62mm Width)
- Supplier Device Package：28-SOJ
- Access Time：15 ns
- Grade：-
- Qualification：-
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Overview
The AS7C256A-15JINTR is a 256 Kbit (32K x 8) asynchronous static random-access memory (SRAM) manufactured by Alliance Memory, Inc. It operates with a supply voltage range of 4.5 V to 5.5 V and features a maximum access time of 15 ns. The device utilizes a parallel interface and is housed in a 28-pin Small Outline J-Lead (SOJ) package designed for surface-mount technology. It supports single-data-rate operation and is rated for an industrial temperature range from -40°C to +85°C. Maximum power consumption is specified at 90 mA.
Feature Summary
- Asynchronous parallel SRAM architecture providing fast data access without external clock synchronization
- Industrial-grade operational capability ensuring reliability across extended temperature environments
- Surface-mount SOJ-28 packaging optimized for automated assembly processes
Applications
- Industrial control systems requiring robust memory solutions
- Embedded applications operating within wide temperature ranges
- Data acquisition hardware utilizing parallel bus interfaces
Procurement Notes
Verify the specific suffix 'IN' confirms the Industrial temperature grade (-40°C to +85°C) and 'TR' indicates Tape & Reel packaging. Confirm RoHS compliance status directly with the manufacturer datasheet. Ensure design compatibility with 5V logic levels and 15 ns timing requirements before integration into final assemblies.
Selection Notes
Select this component when industrial temperature stability and surface-mount form factors are required. Compare against TSOP or PDIP variants if leaded or commercial-grade options suffice. Verify that the 15 ns access speed meets system latency constraints and that the 5V supply voltage aligns with existing power rails.
Part Context
This part belongs to the AS7C256A family of 256 Kbit SRAM devices. It shares architectural similarities with other members like the AS7C256A-15TCN but differs in package type and temperature rating. The series provides non-volatile-like retention characteristics typical of SRAM technology.
Replacement Considerations
AS7C256A-15JIN serves as a tube-packaged equivalent within the same electrical specifications. Cross-reference with AS7C256A-15TIN for TSOP alternatives if pinout compatibility allows.
