MC14515BDWR2G

Overview

The MC14515BDWR2G is a 4-to-16 line decoder manufactured by onsemi, belonging to the 4000B logic series. It features latched inputs and inverted active-low outputs. The device operates within a supply voltage range of 3V to 18V and supports surface mount installation in a 24-SOIC package. It functions as a single circuit with four-bit input capability, designed for use in environments ranging from -55°C to +125°C.

Feature Summary

• Provides decoding functionality for four binary inputs into sixteen distinct output lines.
• Incorporates R-S type flip-flop latches to retain input data states upon strobe transition.
• Delivers active-low logical signals at the selected output pin.

Applications

• Digital address decoding systems
• Memory chip select generation
• Control signal routing in embedded architectures

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) prior to assembly. Ensure storage conditions adhere to recommended humidity limits to prevent package degradation before reflow soldering processes are initiated.

Selection Notes

Select this component when active-low decoded outputs are required for system control. The integrated latch mechanism eliminates the need for external storage elements, simplifying circuit design. Verify that the operating voltage remains within the specified 3V to 18V range to ensure reliable logic threshold performance across the entire industrial temperature spectrum.

Part Context

This part belongs to the MC14515B family, which offers complementary output options alongside the MC14514B. While the MC14514B provides active-high outputs, the MC14515BDWR2G specifically delivers active-low signals. Both variants share identical internal latch structures and pin configurations, differing only in output polarity characteristics for specific interface requirements.

Replacement Considerations

The MC14514BDWR2G serves as a parameter-equivalent substitute, offering identical functionality with active-high outputs instead of active-low. Other compatible alternatives include devices from the CD4515 series, provided the output polarity difference is accounted for in the design.

FAQ

What is the function of the latch in the MC14515BDWR2G?

The internal R-S type flip-flop latches hold the last input data presented prior to the strobe signal transitioning from high to low, maintaining the decoded state until new data is accepted.

How does the MC14515BDWR2G differ from the MC14514B?

The primary difference is the output polarity; the MC14515BDWR2G presents a logical zero at the selected output (active-low), whereas the MC14514B presents a logical one (active-high).