MM74HC259N

Latches Overview

The MM74HC259N is an 8-bit addressable latch and 3-to-8 line decoder manufactured by onsemi (formerly Fairchild). It utilizes advanced silicon-gate CMOS technology to provide general-purpose storage in digital systems. The device features a single data input, eight latch outputs, three address inputs, a common enable input, and a common clear input. It operates within a supply voltage range of 2V to 6V and supports a wide operating temperature range from -40°C to +85°C.

Latches Feature Summary

• Combines demultiplexer and 8-bit latch functionality for random addressable data entry
• Serial-to-parallel capability with output available from each storage bit
• Common reset input allows clearing all latches or addressing specific outputs
• Inputs protected against static discharge via internal diodes

Latches Applications

• General purpose storage applications in digital systems
• 3-to-8 active HIGH decoder implementations
• Addressable latch circuits requiring random data entry

Latches Procurement Notes

Verify the manufacturer origin, as this part was originally produced by Fairchild Semiconductor before its integration into onsemi. Confirm the package type matches the N16E designation for a 16-Lead Plastic Dual-In-Line Package. Ensure the ordering code corresponds to the standard DIP variant rather than tape and reel options which require an appended suffix.

Latches Selection Notes

Select this component when an 8-bit addressable latch or 3-to-8 decoder is required in a CMOS logic design. It is suitable for systems needing serial-to-parallel conversion with individual output control. Consider the 2V to 6V supply range and ensure the propagation delay specifications meet the timing requirements of the target application circuit.

Latches Part Context

This device belongs to the 74HC series of high-speed CMOS logic devices. It is pin compatible with low power Schottky TTL (LSTTL) standards. The MM74HC259 is functionally equivalent to other industry-standard 8-bit addressable latches, providing a versatile solution for memory addressing and data routing tasks in mixed-technology digital environments.

Latches Replacement Considerations

Direct substitutes include SN74HC259N from Texas Instruments and 74HC259N from NXP Semiconductors. These alternatives maintain functional and pinout compatibility with the MM74HC259N.