MC74VHCT259ADR2

Latches Overview

The MC74VHCT259ADR2 is an 8-bit addressable latch and 1-of-8 decoder fabricated with silicon gate CMOS technology. It features LSTTL-compatible inputs and operates within a DC supply voltage range of 4.5 V to 5.5 V. The device provides four modes: addressable latch, memory, demultiplexer, and reset. Propagation delay is typically 7.6 ns at 5 V. Quiescent supply current is maximized at 40.0 μA across the operating temperature range of -55°C to +125°C.

Latches Feature Summary

• Provides high-speed operation comparable to Bipolar Schottky TTL while maintaining low power dissipation.
• Features internal buffer output stages designed for high noise immunity and stable signal transmission.
• Includes input and output structures that provide protection against supply voltage mismatches and hot insertion events.
• Delivers full 5 V CMOS level output swings suitable for interfacing between 3.3 V and 5.0 V logic domains.

Latches Applications

• General purpose data storage in digital systems
• Level conversion for interfacing 3.3 V logic to 5.0 V logic
• Address decoding and demultiplexing applications

Latches Procurement Notes

Verify the specific suffix 'R2' indicates reel packaging when sourcing components. Confirm the datasheet revision matches the required specifications, as older revisions may exist. Ensure the SOIC-16 package dimensions align with the target PCB footprint. Validate that the 4.5 V to 5.5 V supply requirement fits the system design constraints.

Latches Selection Notes

Select this component when TTL-compatible inputs are required alongside CMOS low power characteristics. The VHCT series ensures compatibility with standard logic families while offering robust protection features. Consider the propagation delay specifications if timing margins are critical. Verify that the 8-bit capacity meets the system's addressing or storage requirements without necessitating additional cascading.

Latches Part Context

This part belongs to the MC74VHCT259A family of addressable latches manufactured by onsemi. It is functionally compatible with other standard logic families but offers enhanced performance through its CMOS fabrication process. The device integrates three internal circuit stages to ensure reliable operation under various load conditions and environmental temperatures.

Latches Replacement Considerations

MC74VHCT259ADTR2G