AS6C4008-70SAN

Memory IC Overview

The AS6C4008-70SAN is a 4 Mbit (512K x 8) asynchronous static random access memory manufactured by Alliance Memory. It operates on a single power supply ranging from 2.7 V to 5.5 V with a maximum access time of 70 ns. The device utilizes a parallel interface and is housed in a 32-pin Small Outline Package (SOP). It supports standard TTL-compatible outputs and features fully static operation for reliable data retention.

Memory IC Feature Summary

• Low power CMOS technology ensures stable standby current across operating temperatures.
• Fully static operation eliminates the need for external clock signals during read/write cycles.
• TTL-compatible outputs facilitate direct interfacing with standard logic families.

Memory IC Applications

• Embedded systems requiring non-volatile-like persistent storage without battery backup.
• Industrial control units utilizing microcontrollers with limited internal RAM.
• Communication equipment buffer memory for asynchronous data transfer.

Memory IC Procurement Notes

Verify the specific suffix 'SAN' against official Alliance Memory documentation, as it denotes the SOP package variant. Confirm RoHS compliance status and humidity sensitivity handling requirements prior to assembly. Check for end-of-life notices or restricted availability through authorized distributors.

Memory IC Selection Notes

Select this component when a 512K x 8 organization is required with a 70 ns speed grade. Ensure the design accommodates the 2.7 V to 5.5 V voltage range. Compare against TSOP or BGA packages if board space constraints differ from the SOP footprint.

Memory IC Part Context

This part belongs to the AS6C4008 series of low-power CMOS SRAMs. It shares architectural similarities with other variants like the AS6C4008-55 but offers a slower 70 ns access time. The series is designed for general-purpose memory applications where cost-effective parallel access is prioritized over high-speed performance.

Memory IC Replacement Considerations

Direct pin-to-pin replacements include the AS6C4008-55BIN and AS6C4008-55PCN, which offer faster 55 ns access times. Verify that the lower power consumption of these alternatives does not conflict with existing power budget calculations.