MC74LVX259DTG

Latches Overview

The MC74LVX259DTG is an 8-bit addressable latch fabricated with silicon gate CMOS technology, housed in a TSSOP-16 package. It operates within a DC supply voltage range of 2.0 V to 3.6 V and supports an operating temperature range from -40°C to +85°C. The device features LSTTL-compatible inputs and provides high noise immunity with input protection up to 7.0 V regardless of supply voltage. Propagation delays are specified at 14 ns maximum at 2.7 V and 12 ns maximum at 3.3 V under a 50 pF load. Quiescent supply current is limited to 2 µA maximum.

Latches Feature Summary

• Provides four operational modes: addressable latch, memory, one-of-eight decoding, and reset.
• Features internal buffer output circuitry for high noise immunity and stable signal transmission.
• Input structure allows interfacing between 5.0 V logic circuits and 3.0 V systems via extended voltage tolerance.

Latches Applications

• General purpose data storage in digital systems
• Addressable latch configurations for memory expansion
• One-of-eight decoding or demultiplexing applications

Latches Procurement Notes

Verify component status as the MC74LVX259DTG is listed as discontinued by onsemi and not recommended for new designs. Confirm availability through authorized distributors or secondary markets. Ensure replacement strategies account for end-of-life constraints and validate that alternative components meet all electrical and mechanical specifications required for the intended application.

Latches Selection Notes

Select this component when an 8-bit addressable latch with low power consumption and wide input voltage tolerance is required. The LVX series offers compatibility with standard logic levels while supporting lower supply voltages. Consider the TSSOP-16 package dimensions for PCB layout constraints. Evaluate the propagation delay characteristics against system timing requirements to ensure adequate performance margins.

Latches Part Context

This device belongs to the MC74LVX259 family of addressable latches manufactured by onsemi. It utilizes CMOS technology optimized for low power dissipation and high-speed operation. The product line includes variants with different packaging options such as SOIC-16. The specific DTG suffix indicates a lead-free TSSOP-16 package compliant with RoHS standards.

Latches Replacement Considerations

MC74LVX259DTR2G

Latches FAQ

How does the device handle multiple address bit changes?

Changing more than one bit of the address simultaneously may impose a transient wrong address. This operation should only be performed while the device is in memory mode to prevent unintended state updates.

What is the input voltage tolerance relative to the supply voltage?

The input structure provides protection when voltages up to 7.0 V are applied, regardless of the supply voltage level. This enables direct interfacing between 5.0 V circuits and 3.0 V powered devices.