SN74HC259NE4

Overview

The SN74HC259NE4 is an 8-bit addressable latch from the Texas Instruments HC logic family, housed in a 16-pin PDIP package. It operates within a supply voltage range of 2 V to 6 V and supports a temperature range of -40°C to +85°C. Key electrical parameters include a propagation delay of 130 ns at 2 V, 26 ns at 4.5 V, and 22 ns at 6 V. The device features a maximum static current of 8 µA, with low-level output currents up to 32 mA and high-level output currents up to -5.2 mA.

Feature Summary

• Performs serial-to-parallel conversion by storing single-line data across eight addressable latches.
• Functions as a 1-of-8 decoder or demultiplexer with active-high outputs.
• Includes asynchronous parallel clear functionality for immediate output reset.

Applications

• General-purpose storage applications in digital systems
• Working registers
• Serial-holding registers
• Active-high decoders or demultiplexers

Procurement Notes

Verify the component matches the SN74HC259NE4 designation specifically. Confirm the PDIP-16 through-hole package type and the NE4 suffix indicating lead-free composition. Ensure the operating temperature range aligns with industrial requirements (-40°C to +85°C). Cross-reference the manufacturer datasheet for RoHS compliance details and verify pinout compatibility with existing designs.

Selection Notes

Select this component when an 8-bit addressable latch with active-high outputs is required. The HC series offers standard CMOS performance suitable for general digital logic. Consider the PDIP-16 package for prototyping or through-hole assembly needs. Evaluate the 2 V to 6 V supply range against system power constraints. Verify that the propagation delays meet timing requirements for the specific application speed.

Part Context

This part belongs to the SNx4HC259 family of 8-bit addressable latches manufactured by Texas Instruments. It is part of the broader 74HC logic series, designed for general-purpose storage and decoding tasks. The device provides multifunctional capabilities including register storage and demultiplexing within a single integrated circuit package.

Replacement Considerations

SN74HC259N is a direct equivalent without the environmental suffix. SN74HC259PWR offers the same functionality in a TSSOP surface-mount package. CD74HC259E is a comparable alternative in a PDIP-16 package.