MC74VHCT259AMG

Latches Overview

The MC74VHCT259AMG is an 8-bit addressable latch fabricated with silicon gate CMOS technology. It operates within a supply voltage range of 4.5 V to 5.5 V and supports temperatures from -55°C to +125°C. The device features TTL-compatible inputs (VIH = 2.0 V, VIL = 0.8 V) and provides full 5.0 V CMOS level output swings. Propagation delay is typically 7.6 ns at 5.0 V. It includes power-down protection on inputs and outputs and offers latchup performance exceeding 300 mA.

Latches Feature Summary

• Provides four operational modes: addressable latch, memory, one-of-eight decoding, and reset.
• Features internal buffer output for high noise immunity and stable signal transmission.
• Includes input and output structures that protect against supply voltage mismatches and hot insertion events.

Latches Applications

• General purpose data storage in digital systems
• Level conversion between 3.3 V and 5.0 V logic domains
• Demultiplexing applications requiring single-output selection

Latches Procurement Notes

Verify the specific package suffix 'M' corresponds to the SOEIAJ-16 footprint required for your design. Confirm RoHS compliance status if lead-free materials are mandatory for your assembly process. Ensure the operating temperature range meets your environmental specifications before finalizing component selection.

Latches Selection Notes

Select this component when high-speed operation comparable to Bipolar Schottky TTL is needed alongside low CMOS power dissipation. It is suitable for designs requiring interface compatibility with standard logic families. Verify that the 8-channel capacity fits your system architecture requirements.

Latches Part Context

This device belongs to the 74VHCT series, designed for general-purpose digital storage. It is functionally compatible with other standard logic families while maintaining distinct CMOS electrical characteristics. The VHCT designation indicates LSTTL-compatible input thresholds.

Latches Replacement Considerations

MC74VHCT259ADG

Latches FAQ

How does the device handle transient wrong addresses?

Changing more than one bit of the address can impose a transient wrong address; therefore, such changes should only be performed while the device is in memory mode.

What is the function of the Enable pin?

The Enable pin controls the mode of operation, allowing selection between addressable latch, memory, demultiplexer, and reset states based on its logic level combined with the Reset input.