AS6C6264A-70SCNTR

Overview

The AS6C6264A-70SCNTR is an asynchronous static random-access memory (SRAM) manufactured by Alliance Memory. It features a storage capacity of 64 kbit, organized as 8K x 8 bits. The device operates with a supply voltage range of 4.5V to 5.5V and provides a typical access time of 70 ns. It utilizes CMOS technology for low power consumption, with a typical operating supply current of 10 mA and standby current below 2 μA at temperatures up to 70 °C. The component is available in a SOP-28 surface-mount package.

Feature Summary

• Low power CMOS construction with automatic power dissipation reduction during long read or write cycles
• TTL and CMOS compatible logic levels for broad interface compatibility
• Three-state outputs for efficient bus sharing and system integration
• High ESD protection exceeding 2000 V and latch-up immunity greater than 100 mA

Applications

• Embedded systems requiring non-volatile-like data retention without battery backup
• Industrial control units operating within commercial or extended temperature ranges
• Communication equipment utilizing parallel SRAM interfaces
• Consumer electronics devices powered by standard 5V logic supplies

Procurement Notes

Verify the specific suffix SCNTR indicates tape-and-reel packaging when sourcing components. Confirm the manufacturer designation as Alliance Memory, as previous documentation may reference All Sensors due to corporate history. Ensure the voltage range matches the 4.5V to 5.5V specification rather than wider 2.7V variants found in other series members. Check RoHS compliance status for environmental regulations.

Selection Notes

Select this part when a 70 ns access speed is sufficient for the application timing requirements. Choose the SOP-28 package for surface-mount assembly constraints. Verify that the 4.5V minimum supply voltage aligns with the system power rail, as lower voltage options exist in the broader AS6C6264 family. Consider the 10 mA active current draw against total system power budgets.

Part Context

This component belongs to the AS6C6264A family of 64-kbit CMOS SRAMs. It shares architectural similarities with faster variants like the 55 ns version but offers cost-effective performance for less timing-critical applications. The device complements larger capacity parts like the 256-kbit AS6C62256A within the same product line, providing scalable memory solutions for embedded designs.

Replacement Considerations

AS6C6264A-70SCN is the tube-packaged equivalent of this reel-delivered component. AS6C6264-55SCNTR offers faster 55 ns access times with a wider 2.7V to 5.5V voltage range. AS6C6264-55PIN provides a through-hole PDIP-28 option for legacy board designs.