SN74HC259DT

Overview

The SN74HC259DT is an 8-bit addressable latch from the Texas Instruments 74HC series, housed in a 16-pin SOIC package. It operates on a single power supply ranging from 2V to 6V. The device features serial input and parallel output capabilities with non-inverting logic polarity. Propagation delay varies by voltage: 130ns at 2V, 26ns at 4.5V, and 22ns at 6V. Static current is 8uA. Output drive capability includes 32mA low-level and -5.2mA high-level currents. Operating temperature spans from -40°C to +85°C.

Feature Summary

• Provides 8-bit addressable latching functionality for data storage
• Converts serial input signals into parallel outputs
• Features non-inverting logic polarity for direct signal transmission

Applications

• Data storage systems requiring addressable memory elements
• Serial-to-parallel conversion circuits
• Address decoding applications in digital logic designs

Procurement Notes

Verify the specific suffix 'DT' corresponds to the SOIC-16 surface-mount package variant. Confirm RoHS compliance status and moisture sensitivity level (MSL) ratings prior to integration. Ensure the design accounts for the specified operating temperature range of -40°C to +85°C. Cross-reference the manufacturer datasheet for exact pinout configurations and electrical characteristics matching the intended application requirements.

Selection Notes

Select this component when 8-bit addressable latching is required within the HC logic family constraints. The wide supply voltage range supports both 2V and 5V system architectures. Consider the SOIC-16 package for surface-mount assembly needs. Evaluate propagation delay specifications against system timing requirements, noting that delays decrease as supply voltage increases.

Part Context

This part belongs to the Texas Instruments 74HC series of high-speed CMOS logic devices. The 74HC259 specifically functions as an 8-bit addressable latch, distinguishing it from standard shift registers or multiplexers within the same family. It complements other logic components by providing stable parallel data outputs controlled by individual address inputs.

Replacement Considerations

SN74HC259DR