SN74LS259BD

Latches Overview

The SN74LS259BD is an 8-bit addressable latch manufactured by Texas Instruments in the LS logic series. It features a serial input and parallel output configuration, performing serial-to-parallel conversion with storage. The device includes an asynchronous parallel clear function and utilizes an active-high decoder for addressing. It is housed in a 16-pin SOIC (D) package. Key electrical specifications include a propagation delay of 30 ns at 5 V, non-inverting polarity, and operation within a standard temperature range.

Latches Feature Summary

• Performs serial-to-parallel data conversion with storage capability
• Features asynchronous parallel clear functionality
• Utilizes an active-high decoder for individual bit addressing

Latches Applications

• Serial-to-parallel data conversion circuits
• Addressable memory storage applications
• Digital display driver interfaces

Latches Procurement Notes

Verify the specific suffix 'BD' corresponds to the SOIC-16 package variant. Confirm the LS logic family designation against project requirements. Check for obsolete status indicators as some listings mark this part as obsolete. Ensure compatibility with existing 5V logic levels. Validate manufacturer authenticity through authorized distribution channels.

Latches Selection Notes

Select this component when an 8-bit addressable latch with serial input is required. The LS series offers specific speed and power characteristics distinct from HC or HCT families. Consider the SOIC package size for surface mount assembly constraints. Verify that the 30 ns propagation delay meets system timing requirements. Ensure the active-high decoding scheme aligns with control logic design.

Latches Part Context

This part belongs to the Texas Instruments 74LS logic family, known for low-power Schottky technology. It is functionally similar to other 8-bit addressable latches but differs in speed and power consumption compared to HC variants. The SN74LS259BD is a legacy component often used in older industrial or consumer electronics designs requiring reliable serial data storage.

Latches Replacement Considerations

SN74HC259N: High-speed CMOS alternative with different voltage and speed specs. SN74HC259NE4: RoHS-compliant HC version. SN74LS259N: PDIP package equivalent.