MM74HC259M

Latches Overview

The MM74HC259M is an 8-bit addressable latch and 3-to-8 line decoder manufactured by onsemi (formerly Fairchild). It features a single data input, eight latch outputs, three address inputs, a common enable input, and a common clear input. The device operates within a supply voltage range of 2V to 6V and supports a wide operating temperature range from -40°C to +85°C. Typical propagation delay is 18 ns at 5V, with maximum guaranteed limits up to 32 ns. Quiescent current is typically 8 µA, with a maximum of 80 µA.

Latches Feature Summary

• Implements 8-bit addressable latch functionality for general-purpose digital storage applications.
• Functions as a 3-to-8 line decoder when the enable input is held low.
• Includes internal protection circuits against static discharge and transient excess voltage on all inputs.

Latches Applications

• General purpose data storage in digital systems
• Address decoding logic
• Multiplexing control signals

Latches Procurement Notes

Verify the specific package variant, as the MM74HC259 series includes SOIC, SOP, TSSOP, and PDIP options. Confirm that the 'M' suffix corresponds to the 16-Lead Small Outline Integrated Circuit (SOIC) package per the ordering code table. Ensure compatibility with the required operating temperature range and supply voltage specifications before finalizing procurement.

Latches Selection Notes

Select this component for designs requiring an 8-bit latch or decoder within the 74HC CMOS family. It offers pin and function compatibility with standard 74LS series devices while providing lower power consumption. Consider the 2V to 6V supply range and propagation delays when designing for high-speed or low-voltage environments.

Latches Part Context

This part belongs to the MM74HC259 series of 8-bit addressable latches. It is part of the broader 74HC logic family, which utilizes advanced silicon-gate CMOS technology. The device is designed to replace older 74LS equivalents in modern low-power digital circuits.

Latches Replacement Considerations

Functionally compatible with other 74HC259 variants from different manufacturers, provided voltage levels and timing requirements are met. Verify package dimensions if replacing with non-SOIC versions such as DIP or TSSOP.