SN74HC259DR

Overview

The SN74HC259DR is an 8-bit addressable latch manufactured by Texas Instruments, belonging to the HC logic family. It features a single serial input and eight parallel outputs in a non-inverting configuration. The device operates within a supply voltage range of 2 V to 6 V and utilizes a 16-SOIC surface-mount package. Propagation delay specifications vary with voltage, recorded at 130 ns at 2 V, 26 ns at 4.5 V, and 22 ns at 6 V. Static current consumption is specified at 8 uA, with low-level output current capability of 32 mA and high-level output current of -5.2 mA.

Feature Summary

• Provides 8-bit data storage with individual addressability for direct output control
• Accepts serial data input and converts it to parallel output states
• Operates with non-inverting logic polarity across the standard voltage range

Applications

• Parallel data expansion from serial sources
• Address decoding in digital systems
• Output buffering for microcontroller interfaces

Procurement Notes

Verify the specific suffix 'DR' corresponds to the 16-SOIC package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets prior to procurement. Ensure the operating temperature range meets system requirements, as industrial variants may differ from commercial grades.

Selection Notes

Select this component for applications requiring serial-to-parallel conversion with independent output addressing. Compare propagation delays against system clock speeds to ensure timing margins are met. Verify that the SOIC package dimensions fit the target PCB footprint and that the output drive currents satisfy load requirements.

Part Context

This part belongs to the SN74HC259 series of 8-bit addressable latches. It shares functional compatibility with other members of the 74HC family while offering distinct addressable output capabilities. The DR suffix indicates a specific tape-and-reel packaging format suitable for automated surface-mount assembly processes.

Replacement Considerations

• SN74HC259D
• SN74HC259N
• SN74HC259PWR