AS6C4008-70SANTR

Overview

The AS6C4008-70SANTR is a 4 Mbit (512K x 8) asynchronous CMOS static random-access memory manufactured by Alliance Memory. It features a maximum access time of 70 ns and operates on a single power supply ranging from 2.7 V to 5.5 V. The device utilizes a 32-pin Thin Small Outline Package with a narrow profile (SOP). It supports TTL-compatible outputs, offers low standby current consumption, and includes data retention capabilities down to 1.5 V. The component is RoHS compliant and designed for industrial temperature ranges.

Feature Summary

• Low power CMOS technology providing reduced operating and standby currents
• Single voltage supply operation compatible with standard logic families
• Fully static operation with tri-state outputs for easy bus interfacing

Applications

• Industrial control systems requiring non-volatile-like data storage without refresh cycles
• Embedded applications in consumer electronics needing fast local data buffering
• Automotive electronic modules utilizing wide voltage tolerance

Procurement Notes

Verify the specific suffix 'SANTR' against official Alliance Memory documentation to confirm package dimensions and tape-and-reel specifications. Ensure the selected variant matches the required 70 ns speed grade and 32-pin SOP form factor. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer, as availability may vary by region.

Selection Notes

Select this component when a 512K x 8 organization is required with moderate 70 ns access speeds. It is suitable for designs needing a wide 2.7V to 5.5V input range, simplifying power supply design compared to fixed 3.3V parts. Consider the 32-pin SOP package constraints regarding PCB space and thermal dissipation requirements for the target application environment.

Part Context

This part belongs to the AS6C4008 family of low-power CMOS SRAMs. The family typically offers various speed grades and package options, including TSOP and TFBGA. The AS6C4008 series is widely used in general-purpose memory applications where data integrity and low power are prioritized over high-density storage found in DRAM technologies.

Replacement Considerations

Direct replacements include other AS6C4008 variants with different speed grades (e.g., AS6C4008-55) or packages, provided pin compatibility is maintained. Cross-brand equivalents should be verified for identical pinouts, voltage levels, and timing characteristics.