SN74HC259D

Overview

The SN74HC259D is an 8-bit addressable latch from the Texas Instruments HC logic family, housed in a 16-pin SOIC package. It operates on a single supply voltage ranging from 2 V to 6 V. The device features non-inverting outputs with a low-level output current of 32 mA and a high-level output current of -5.2 mA. Propagation delay varies by voltage: 130 ns at 2 V, 26 ns at 4.5 V, and 22 ns at 6 V. Static current consumption is 8 uA. It functions within a temperature range of -40°C to +85°C.

Feature Summary

• Provides eight individually addressable D-type latches for parallel data storage
• Accepts serial input data via shift register configuration
• Delivers standard non-inverting outputs capable of driving moderate loads

Applications

• Parallel data buffering in digital systems
• Address decoding circuits
• Shift register to parallel converter applications

Procurement Notes

Verify the specific datasheet revision and package tolerance against design requirements. Confirm that the SOIC-16 footprint matches the PCB layout. Ensure operating conditions remain within the specified voltage and temperature limits to maintain signal integrity and performance specifications.

Selection Notes

Select this component when eight independent latched outputs are required from a single IC. The HC series offers compatibility with standard CMOS logic levels. Consider the through-hole or surface-mount availability based on assembly constraints. Verify that the propagation delay meets the system timing requirements at the intended supply voltage.

Part Context

This part belongs to the SN74HC259 series of 8-bit addressable latches. It shares functional characteristics with other variants like the SN74HC259N and SN74HC259PWR, differing primarily in packaging style. The series is designed for general-purpose digital logic applications requiring reliable data storage and addressing capabilities.

Replacement Considerations

SN74HC259DR