MC74HC259ADTR2G

Latches Overview

The MC74HC259ADTR2G is an 8-bit addressable latch and 1-of-8 decoder manufactured by onsemi. It operates within a DC supply voltage range of 2.0 V to 6.0 V. The device features low input current of ±0.1 µA and high noise immunity characteristic of CMOS technology. It supports output drive capability for 10 LSTTL loads and interfaces directly with CMOS, NMOS, and TTL logic families. The component is housed in a TSSOP-16 surface-mount package.

Latches Feature Summary

• Supports four operational modes: addressable latch, memory, one-of-eight decoding, and reset.
• Outputs provide direct interface compatibility with CMOS, NMOS, and TTL logic families.
• Features high noise immunity and low input leakage current typical of CMOS devices.
• Capable of driving ten LSTTL loads.

Latches Applications

• Addressable data latching applications
• One-of-eight decoding circuits
• Demultiplexing signal routing

Latches Procurement Notes

Verify the specific ordering suffix 'DT' corresponds to the TSSOP-16 package configuration required for your design. Confirm that the 'G' suffix indicates a lead-free, halogen-free, and RoHS compliant product status. Ensure the operating voltage requirements align with the HC series specifications (2.0 V to 6.0 V) rather than HCT limits. Validate that the moisture sensitivity level and storage temperature ranges meet your manufacturing process constraints.

Latches Selection Notes

Select this component when an 8-bit addressable latch or demultiplexer is required with wide voltage flexibility. The HC series allows operation from 2.0 V to 6.0 V, suitable for systems needing broader supply tolerance than standard 5 V logic. Verify that the TSSOP-16 footprint fits the PCB layout. Consider the propagation delay characteristics at the target supply voltage if timing-critical performance is necessary for the address or data inputs.

Latches Part Context

This part belongs to the MC74HC259A family of high-performance silicon-gate CMOS devices. It shares pinout compatibility with LS259 equivalents while offering improved power consumption and noise immunity. The device integrates three address inputs, a data input, enable, and reset controls to manage eight non-inverting outputs independently.

Latches Replacement Considerations

MC74HC259ADR2G