MM74HC259MTC

Latches Overview

The MM74HC259MTC is an 8-bit addressable latch and 3-to-8 line decoder manufactured using advanced silicon-gate CMOS technology. It features a single data input (D), eight latch outputs (Q1–Q8), three address inputs (A, B, C), a common enable input (G), and a common clear input. The device operates within a supply voltage range of 2V to 6V and supports an operating temperature range of -40°C to +85°C. Typical propagation delay is 18 ns, with maximum guaranteed delays up to 32 ns at 5V. Quiescent current is typically 8 µA, rising to 80 µA maximum.

Latches Feature Summary

• Implements 8-bit addressable latch functionality for general-purpose digital storage applications
• Functions as a 3-to-8 line decoder when the enable input is held low
• Includes protection circuits on all inputs against static discharge and transient excess voltage

Latches Applications

• General purpose storage in digital systems
• Address decoding logic
• Data latching operations requiring specific output addressing

Latches Procurement Notes

Verify package type MTC16 corresponds to the 16-Lead Thin Shrink Small Outline Package. Confirm ordering suffix matches datasheet specifications. Check manufacturer documentation for tape and reel availability options if required for automated assembly processes.

Latches Selection Notes

Select this component for designs requiring 8-bit latching or decoding within standard HC logic families. Ensure supply voltage remains between 2V and 6V. Consider propagation delay limits when designing high-speed timing constraints relative to the 32 ns maximum guarantee.

Latches Part Context

This part belongs to the MM74HC259 series, which includes variants in DIP, SOIC, SOP, and TSSOP packages. The MTC suffix specifically denotes the 16-Lead Thin Shrink Small Outline Package compliant with JEDEC MO-153 standards. It serves as a direct functional replacement for other 74HC259 devices across different manufacturers.

Latches Replacement Considerations

• MM74HC259M
• MM74HC259SJ
• MM74HC259N

Latches FAQ

How does the device behave when the Enable input is Low?

When Enable is Low, the device acts as a 3-to-8 line decoder. All latches except the addressed one are cleared to Low, while the addressed latch follows the Data input.

What happens to unaddressed latches during operation?

Unaddressed latches remain unaffected by changes on the data or address inputs when the Enable input is High. They retain their previous state.