SN74HC259NSR

Overview

The SN74HC259NSR is an 8-bit addressable latch from the Texas Instruments HC logic family, housed in a 16-pin SOIC package. It operates on a supply voltage range of 2 V to 6 V with a maximum static current of 8 uA. Propagation delay varies by voltage: 130 ns at 2 V, 26 ns at 4.5 V, and 22 ns at 6 V. The device provides non-inverting outputs with a low-level output current of 32 mA and a high-level output current of -5.2 mA. It functions as a serial-in/parallel-out shift register or latch within standard industrial temperature ranges.

Feature Summary

• Provides eight individually addressable data latches for parallel output control
• Features serial input capability compatible with standard shift register protocols
• Utilizes low-power CMOS technology for minimal static power consumption
• Delivers non-inverting outputs with standardized drive capabilities

Applications

• Parallel data expansion from serial sources
• Address decoding in memory systems
• I/O port expansion for microcontrollers
• Display driver interface circuits

Procurement Notes

Verify the specific suffix 'NSR' against official Texas Instruments documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with required operating temperatures and voltage levels before integration. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and current production status.

Selection Notes

Select this component when eight independent latched outputs are required from a single serial data stream. The HC series offers broad voltage compatibility suitable for various digital logic interfaces. Consider the propagation delays relative to system clock speeds to ensure timing requirements are met during data transfer operations.

Part Context

This device belongs to the SN74HC259 family of 8-bit addressable latches. It shares functional similarities with other HC-series logic components but is distinct in its ability to latch specific addresses rather than shifting data continuously. The SOIC packaging facilitates surface-mount assembly in compact electronic designs requiring multiple controlled outputs.