AS7C256A-20TCN

$1.98

Description：IC SRAM 256KBIT PAR 28TSOP I
Series：-
Mfr：Alliance Memory, Inc.
Package：Tray

SKU:41702ae1c6a0 Category: Memory IC Brand: Alliance Memory, Inc.

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Product introduction

Product Detailed Parameters

Description：IC SRAM 256KBIT PAR 28TSOP I
Series：-
Mfr：Alliance Memory, Inc.
Package：Tray
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：20ns
Voltage - Supply：4.5V ~ 5.5V
Operating Temperature：0°C ~ 70°C (TA)
Mounting Type：Surface Mount
Package / Case：28-TSSOP (0.465", 11.80mm Width)
Supplier Device Package：28-TSOP I
Access Time：20 ns
Grade：-
Qualification：-

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AS7C256A-20TCN

Overview

The AS7C256A-20TCN is a 256 Kbit (32K x 8) asynchronous static random access memory manufactured by Alliance Memory. It operates within a voltage range of 4.5 V to 5.5 V, with a maximum supply current of 65 mA. The device features a 20 ns access time and supports parallel interface communication. Designed for commercial temperature applications, it functions between 0°C and +70°C. The component is housed in a 28-pin TSOP I surface-mount package.

Feature Summary

Asynchronous SRAM architecture providing fast data access without clock synchronization requirements
Parallel interface supporting standard memory bus connections for microprocessor systems
Commercial-grade operational temperature range suitable for general-purpose electronic equipment

Applications

Microcontroller system memory expansion
Embedded storage for industrial control units
General-purpose data buffering in consumer electronics

Procurement Notes

Verify the specific suffix TCN confirms the 28-pin TSOP I package and commercial temperature rating against official datasheets. Confirm RoHS compliance status and moisture sensitivity level prior to assembly planning. Ensure voltage supply matches the 4.5V to 5.5V requirement to prevent device malfunction or damage during operation.

Selection Notes

Select this component when a 256 Kbit capacity is required with 20 ns speed in a compact surface-mount form factor. It is appropriate for designs operating at 5V logic levels within commercial temperature environments. Consider alternative packages if through-hole mounting or industrial temperature ranges are necessary for the specific application constraints.

Part Context

This part belongs to the AS7C256A series of CMOS static random access memories from Alliance Memory. The series offers various speed grades and packaging options to accommodate different design requirements. The AS7C256A-20 variant specifically targets applications needing moderate speed performance in a cost-effective commercial grade configuration.

Replacement Considerations

Compatible substitutes include AS7C256A-10TCN for faster access times and AS7C256A-15TCN for intermediate speeds, provided pin compatibility and voltage specifications remain consistent.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.