SN74LS259BN

Latches Overview

The SN74LS259BN is an 8-bit addressable latch from the Texas Instruments SN74LS series, housed in a 16-pin PDIP package. It features serial input and parallel output capabilities with non-inverting outputs. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical characteristics include a low-level output current of 8 mA and a high-level output current of -400 µA. Propagation delay is specified at 35 ns at 5 V. It functions as a D-type latch with independent address inputs for each bit.

Latches Feature Summary

• Provides eight independent addressable latches allowing individual data storage control
• Converts serial input data into parallel output states via dedicated address lines
• Features non-inverting outputs suitable for direct interface with logic circuits

Latches Applications

• Memory expansion systems requiring addressable data storage
• Parallel output generation from serial data streams
• Control logic interfaces for peripheral devices

Latches Procurement Notes

Verify the specific suffix 'BN' indicates the tube packaging format and lead-free status as per Texas Instruments documentation. Confirm RoHS compliance details directly from the manufacturer's datasheet or official ordering guide. Ensure the procurement channel sources genuine TI components to guarantee electrical specifications match the published datasheet values for the LS series.

Latches Selection Notes

Select this component when designing systems requiring 8-bit parallel latching controlled by address inputs rather than clock signals alone. Compare propagation delays and output drive currents against system timing requirements. Consider the PDIP-16 package constraints for through-hole assembly processes. Evaluate power consumption differences between HC and LS families if voltage levels vary.

Latches Part Context

This part belongs to the standard 74LS logic family, known for TTL-compatible operation. It serves as a fundamental building block for digital memory and control applications. The SN74HC259N represents the high-speed CMOS equivalent, offering lower power consumption but different voltage and speed characteristics compared to the LS variant.

Latches Replacement Considerations

The SN74HC259N is a functional equivalent within the same logical family but utilizes CMOS technology. Verify voltage compatibility and switching speed differences before substitution. Other manufacturers may offer pin-compatible alternatives such as the MM74C259, though electrical parameters may differ.