NMC27C64QE150

Memory IC Overview

The NMC27C64QE150 is a 64 Kbit (8K x 8) EPROM memory IC manufactured by onsemi. It features parallel interface access with a maximum access time of 150 ns and output enable access time of 50 ns. The device operates within a supply voltage range of 4.5 V to 5.5 V, typically at 5 V. It supports through-hole mounting in a 28-CDIP package. The component functions within an operating temperature range of 0°C to +70°C.

Memory IC Feature Summary

• Provides non-volatile data storage using UV-erasable EPROM technology for reliable program retention.
• Supports standard parallel interface architecture for straightforward integration into legacy digital systems.
• Designed for commercial temperature operation suitable for general-purpose industrial and consumer electronics.

Memory IC Applications

• Embedded firmware storage in industrial control systems
• Data logging and configuration retention in consumer appliances
• Legacy computer peripheral memory expansion

Memory IC Procurement Notes

Verify the specific suffix 'Q' indicates the ceramic DIP package variant when sourcing replacements. Confirm RoHS compliance status as older EPROM variants may not meet current environmental directives. Ensure UV erasure capability is accounted for in the manufacturing workflow, as this component requires specialized equipment for reprogramming. Check for obsolescence notices from onsemi regarding long-term availability.

Memory IC Selection Notes

Select this part when a fixed 64 Kbit capacity is required for non-volatile code storage in 8-bit microcontroller architectures. The 150 ns speed class is appropriate for systems operating below 6 MHz. Consider the 28-CDIP package constraints for PCB layout if through-hole assembly is mandated. Compare against faster access times if system clock speeds exceed typical legacy limits.

Memory IC Part Context

This component belongs to the 27C series of EPROMs, a standard family of electrically programmable read-only memories. The NMC prefix often denotes specific manufacturing lines or regional variants within the onsemi portfolio. These devices represent a mature technology tier used primarily in applications where frequent rewriting is unnecessary but permanent storage is critical.

Memory IC Replacement Considerations

Direct pin-compatible substitutes include the FM27C040Q150 for higher density applications, though capacity differs. Verify equivalent speed grades (150 ns) and package types (28-CDIP) when sourcing cross-references from other manufacturers such as Intel or AMD equivalents.