SN74HC259PWT

Overview

The SN74HC259PWT is an octal addressable latch manufactured by Texas Instruments, belonging to the HC logic family. It features a single serial data input and eight parallel outputs with non-inverting polarity. The device operates within a supply voltage range of 2 V to 6 V and supports surface-mount installation in a TSSOP-16 package. It includes set and reset capabilities for state control. The component is designed for industrial temperature ranges, typically operating between -40°C and +85°C.

Feature Summary

• Provides eight independent transparent D-type latches controlled by individual address inputs
• Accepts serial data input and routes it to specific parallel outputs based on address selection
• Supports low-power CMOS technology compatible with standard logic families

Applications

• Parallel output expansion in microcontroller systems
• Address decoding circuits for peripheral selection
• Data storage buffers in digital communication interfaces

Procurement Notes

Verify the exact suffix against official manufacturer documentation to confirm package type and tape-and-reel specifications. Ensure the ordering part number matches the required moisture sensitivity level and RoHS compliance status. Cross-reference the datasheet revision date to validate electrical characteristics before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring multiple latched outputs from a limited number of control lines. The HC series offers high noise immunity suitable for general-purpose digital applications. Confirm that the operating voltage aligns with the system's power supply rails and that the package footprint fits the target PCB layout constraints.

Part Context

This device is part of the broader SN74HC259 family of octal addressable latches. Variants exist in different packages such as SOIC and DIP, offering flexibility for various manufacturing processes. The HC designation indicates high-speed CMOS technology, providing performance improvements over older LS or ALS series counterparts while maintaining pin compatibility.

Replacement Considerations

SN74HC259PWR is a verified equivalent part number from Texas Instruments featuring identical logical functionality but packaged in a standard TSSOP reel format.