CD74HCT259MT

Latches Overview

The CD74HCT259MT is an addressable latch manufactured by Texas Instruments, belonging to the 74HCT logic series. It features a single D-type input and eight independent latched outputs with tri-state capability. The device operates within a supply voltage range of 4.5V to 5.5V and utilizes a 16-pin Small Outline Integrated Circuit (SOIC) package. Key electrical characteristics include a propagation delay of 16ns and a static current maximum of 2µA. It supports standard output drive currents of 4mA for both high and low states, ensuring compatibility with TTL loads.

Latches Feature Summary

• Provides eight independent addressable latches controlled by a common clock and three-bit address decoder
• Features tri-state outputs that allow direct connection to bus systems without external drivers
• Accepts TTL-driven inputs while operating from a single 5V power supply

Latches Applications

• Address decoding in microprocessor-based memory systems
• Bus isolation and data buffering in digital communication interfaces
• Sequential control logic for peripheral devices

Latches Procurement Notes

Verify the specific suffix 'MT' confirms the tape-and-reel packaging format and SOIC-16 footprint against the manufacturer's official ordering guide. Confirm RoHS compliance status and ensure the component matches the active lifecycle status indicated in the latest datasheet revision before finalizing procurement specifications.

Latches Selection Notes

Select this component when designing circuits requiring multiple latched outputs driven by a single data line and address bus. The HCT series ensures compatibility with standard 5V TTL logic levels. Ensure the design accommodates the 16-pin SOIC thermal requirements and verify that the tri-state enable signals are properly managed to prevent bus contention during operation.

Latches Part Context

This part belongs to the CD74HCT259 family of octal addressable latches. It serves as a bridge between parallel data buses and sequential control logic. The device simplifies system architecture by integrating address decoding directly into the latch mechanism, reducing the component count required for complex memory mapping or I/O expansion tasks in embedded systems.

Latches Replacement Considerations

Check for CD74HCT259M as a tube-packaged alternative. Verify pinout compatibility with SN74HCT259 variants. Ensure any substitute maintains the same 4.5V to 5.5V operating voltage range and tri-state functionality.