74AHC259D,118

Latches Overview

The 74AHC259D,118 is an 8-bit addressable latch from the NXP 74AHC series, housed in a 16-lead SO plastic small outline package (SOT109-1). It operates within a supply voltage range of 2.0 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C. The device features balanced propagation delays with typical values ranging from 3.9 ns to 15.0 ns depending on load capacitance and voltage. It includes Schmitt-trigger inputs for noise immunity and provides active HIGH outputs.

Latches Feature Summary

• Combines demultiplexer and 8-bit latch functionality
• All inputs have Schmitt-trigger actions
• Inputs accept voltages higher than VCC
• Common reset input

Latches Applications

• General purpose storage applications in digital systems
• Serial-to-parallel data conversion
• Random addressable data entry
• Active HIGH 3-to-8 decoding or demultiplexing

Latches Procurement Notes

Verify the specific ordering suffix matches the required package type, as the 74AHC259 family includes both SO16 and TSSOP16 variants. Confirm that the D suffix corresponds to the SO16 package version required for your design. Ensure compatibility with the 74AHC logic family specifications regarding voltage levels and operating temperature ranges before finalizing procurement.

Latches Selection Notes

Select this component when an 8-bit addressable latch with high-speed CMOS performance is required. It is suitable for designs needing random data entry into specific latches or acting as a decoder. Consider the SO16 package dimensions and thermal derating characteristics if operating at elevated temperatures. Verify that the input voltage levels align with the system's logic standards.

Latches Part Context

This part belongs to the 74AHC series of high-speed Si-gate CMOS devices. It is pin-compatible with Low-power Schottky TTL (LSTTL) and complies with JEDEC standard No. 7-A. The 74AHC259D,118 specifically denotes the SO16 package variant, distinguishing it from the TSSOP16 version which shares similar electrical characteristics but differs in physical form factor.

Latches Replacement Considerations

The 74AHCT259D,118 is a compatible alternative within the same family, offering TTL-compatible input levels instead of CMOS levels while maintaining the same pinout and functionality.