74HCT259DB,118

Latches Overview

The Nexperia 74HCT259DB,118 is an 8-bit addressable latch in the 74HCT logic family. It operates within a supply voltage range of 4.5 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C. The device features four modes: addressable latch, memory, demultiplexer, and reset. It utilizes TTL input levels and includes clamp diodes on inputs for overvoltage interfacing. The component is housed in a 16-lead SO plastic small outline package (SOT109-1) with a body width of 3.9 mm.

Latches Feature Summary

• Provides serial-to-parallel conversion capability through random addressable data entry
• Functions as a combined demultiplexer and 8-bit latch with individual storage bit outputs
• Includes ESD protection exceeding 2000 V (HBM) and 1000 V (CDM)
• Features a common reset input and easily expandable architecture

Latches Applications

• Memory mode applications requiring retention of previous states
• Demultiplexing circuits utilizing active HIGH decoding
• Addressable latch systems for sequential data storage
• Decoder implementations converting 3-to-8 active HIGH signals

Latches Procurement Notes

Verify the specific ordering suffix

Latches Selection Notes

Select this component when TTL-compatible input levels are required for 8-bit latching or demultiplexing tasks. Ensure the design accommodates the specified operating temperature range up to +125 °C. Confirm that the SO16 package dimensions align with the PCB layout constraints. Consider the power dissipation limits relative to the thermal environment during operation.

Latches Part Context

This part belongs to the 74HCT series of high-speed CMOS logic devices manufactured by Nexperia. It is functionally compatible with standard 74LS logic families regarding input/output characteristics but offers improved speed and lower power consumption. The device serves as a fundamental building block for digital systems requiring addressable data storage and routing functions.

Latches Replacement Considerations

The 74HC259DB,118 serves as a CMOS-level equivalent within the same package. Other manufacturers producing 74HCT259 devices in SO16 packages may offer functional substitutes, provided input voltage thresholds match the HCT specification.