MC74ACT259D

Latches Overview

The MC74ACT259D is an 8-bit addressable latch from the onsemi 74ACT series, housed in a SOIC-16 package. It operates at a supply voltage of 4.5V to 5.5V with a typical propagation delay of 6.5ns at 5.0V. The device features active HIGH outputs and supports serial-to-parallel conversion, random data entry, and demultiplexing. It includes an active LOW Master Reset and Enable inputs for mode selection.

Latches Feature Summary

• Provides eight bits of storage with individual output access
• Functions as an 8-channel demultiplexer or decoder
• Includes common clear and enable control inputs

Latches Applications

• General purpose digital system storage
• Serial-to-parallel data conversion
• Random addressable data entry systems

Latches Procurement Notes

Verify the specific suffix 'D' corresponds to the SOIC-16 package configuration required for your PCB layout. Confirm that the operating environment stays within the specified 4.5V to 5.5V supply range and -40°C to +85°C temperature limits to ensure reliable performance. Check for RoHS compliance markings if environmental regulations apply to your assembly process.

Latches Selection Notes

Select this component when an 8-bit latching solution with addressable outputs is needed within a standard 5V logic family. The ACT series offers faster switching speeds compared to HC variants while maintaining CMOS power efficiency. Ensure the design accommodates the required setup and hold times relative to the Enable signal transitions for stable data capture.

Latches Part Context

This part belongs to the MC74AC/ACT259 family of high-speed 8-bit addressable latches. It is functionally identical to the ALS259 but utilizes advanced CMOS technology for improved speed and lower power consumption. The device integrates decoding capabilities alongside standard latching functions in a single integrated circuit.

Latches Replacement Considerations

MC74AC259D