MC74VHC259DR2G

Latches Overview

The MC74VHC259DR2G is an 8-bit addressable latch and 1-of-8 decoder fabricated with silicon gate CMOS technology. It operates within a supply voltage range of 2.0 V to 5.5 V and supports temperatures from -55°C to +125°C. Key electrical parameters include a typical propagation delay of 7.6 ns at 5 V, maximum quiescent current of 40 μA, and high noise immunity defined as 28% of VCC. The device features LSTTL-compatible inputs and provides input protection up to 7 V regardless of supply voltage.

Latches Feature Summary

• Supports four operational modes: addressable latch, memory, 8-line demultiplexer, and reset.
• Provides interface capability between 5 V and 3 V circuits due to input voltage tolerance up to 7 V.
• Delivers high-speed operation comparable to Bipolar Schottky TTL while maintaining low power dissipation.
• Features robust ESD protection exceeding 2000 V under the human body model.

Latches Applications

• General purpose data storage in digital systems
• Work registers for temporary data holding
• Serial-to-parallel conversion using serial hold register configurations
• Decoder or demultiplexer functions in logic circuits

Latches Procurement Notes

Verify the specific ordering suffix DR2G corresponds to the SOIC-16 package with 2500 units per reel. Confirm RoHS compliance and lead-free status via official documentation. Ensure the application environment stays within the recommended operating temperature and voltage ranges specified in the datasheet to maintain reliability.

Latches Selection Notes

Select this component when an 8-bit addressable latch or demultiplexer is required with LSTTL-compatible inputs. It is suitable for designs needing high speed and low power consumption. Consider the SOIC-16 package constraints and thermal resistance values if operating at elevated junction temperatures. Verify that the input signal levels remain within the specified limits for the chosen supply voltage.

Latches Part Context

This part belongs to the MC74VHC259 series of 8-bit addressable latches manufactured by onsemi. It utilizes advanced CMOS technology to achieve performance levels similar to older bipolar technologies. The series includes variants with different packaging options such as TSSOP-16, catering to various surface-mount assembly requirements in consumer and industrial electronics.

Latches Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Contact onsemi representatives for information on recommended replacements or updated components.