CD74HC259E

Latches Overview

The CD74HC259E is a high-speed CMOS octal addressable latch manufactured by Texas Instruments. It features eight D-type latches with individual active-low outputs and three address inputs for selective data storage. The device operates within a supply voltage range of 2 V to 6 V, supporting propagation delays of 185 ns at 2 V, 37 ns at 4.5 V, and 31 ns at 6 V. It draws a maximum static current of 8 uA and provides low-level output currents up to 32 mA. The component is housed in a 16-pin PDIP package and functions across an industrial temperature range from -55°C to +125°C.

Latches Feature Summary

• Provides independent data storage for eight bits via dedicated address lines
• Maintains non-inverting outputs that reflect stored logic states
• Incorporates protection circuits against static discharge and transient voltages

Latches Applications

• Data storage in microprocessor memory systems
• Address decoding for peripheral selection
• Parallel-to-serial conversion interfaces

Latches Procurement Notes

Verify the specific manufacturer part number CD74HC259E against official Texas Instruments documentation to confirm pinout compatibility and electrical characteristics. Ensure the procurement source provides valid RoHS compliance details and confirms the PDIP-16 through-hole packaging format. Cross-reference datasheet revisions to validate operating temperature ranges and ensure alignment with system design requirements before finalizing orders.

Latches Selection Notes

Select this component when designing circuits requiring multiple independent latches controlled by a common enable signal. The HC series offers broad voltage compatibility suitable for mixed-voltage environments. Verify that the required propagation delay meets timing constraints, as performance varies significantly with supply voltage changes between 2 V and 6 V.

Latches Part Context

This device belongs to the Texas Instruments CD74HC259 family of octal addressable latches. It serves as a fundamental building block for sequential logic designs where specific data bits must be isolated and stored based on binary address codes. The component integrates standard CMOS technology optimized for speed and power efficiency in digital control applications.

Latches Replacement Considerations

SN74HC259PWR is a documented equivalent offering identical logical functionality in a surface-mount TSSOP-16 package.