SN74HC259DRE4

Overview

The SN74HC259DRE4 is an 8-bit addressable latch manufactured by Texas Instruments, belonging to the HC logic family. It features a single serial data input and eight parallel outputs with non-inverting polarity. The device operates within a supply voltage range of 2 V to 6 V and supports a wide operating temperature range from -40°C to +85°C. Key electrical characteristics include a propagation delay of 130 ns at 2 V, 26 ns at 4.5 V, and 22 ns at 6 V. Static current consumption is specified at 8 uA, with low-level output current capability of 32 mA and high-level output current of -5.2 mA. It is housed in a SOIC-16 package.

Feature Summary

• Provides 8-bit addressable latching functionality for storing digital data states.
• Converts serial input data into parallel output signals via dedicated address lines.
• Features non-inverting output polarity for direct signal interfacing.

Applications

• Parallel-to-serial conversion circuits
• Memory expansion systems
• Display driver interfaces

Procurement Notes

Verify the specific suffix 'DRE4' corresponds to the SOIC-16 surface-mount package and tape-and-reel packaging configuration as documented in official Texas Instruments datasheets. Confirm RoHS compliance status and ensure the component meets the required industrial temperature specifications for the intended application environment before procurement.

Selection Notes

Select this component when 8-bit parallel latching with serial input control is required. Ensure the system voltage falls within the 2 V to 6 V operational range. Consider the propagation delay characteristics relative to system clock speeds. Verify that the SOIC-16 package footprint aligns with the PCB design constraints and thermal management requirements.

Part Context

This part belongs to the SN74HC259 series of 8-bit addressable latches. It is part of the broader HC logic family, designed for CMOS technology applications. The device serves as a fundamental building block for digital logic systems requiring data storage and parallel output distribution controlled by address inputs.

Replacement Considerations

Cross-reference with other SN74HC259 variants such as SN74HC259N or SN74HC259DR to verify pin compatibility and electrical parameter equivalence. Ensure any substitute maintains the same HC logic family characteristics and package dimensions for direct replacement.