MC74AC253DR2

Overview

The MC74AC253DR2 is a dual 4-input multiplexer with 3-state outputs manufactured by onsemi. It selects two bits of data from four sources using common select inputs (S0, S1). The device operates within a supply voltage range of 2.0 V to 6.0 V and supports an operating temperature range of -40°C to +85°C. Propagation delays are specified as 14.5 ns at 3.3 V and 10 ns at 5 V. Outputs can source or sink up to 24 mA and interface directly with bus-oriented systems via individual Output Enable inputs.

Feature Summary

• Dual 4-input multiplexing capability with common select inputs for efficient data routing
• Noninverting 3-state outputs allowing direct interfacing with bus-oriented systems
• Individual Output Enable inputs to force outputs into a high impedance state

Applications

• Bus-oriented system data routing
• Data selection from multiple sources
• Logic implementation of 2-pole, 4-position switches

Procurement Notes

Verify the specific ordering suffix 'R2' against current manufacturer documentation, as this variant may be obsolete. Confirm RoHS compliance status, as older revisions might not meet current environmental standards. Check for available direct replacements like the MC74AC253DR2G if the original part is discontinued. Ensure compatibility with existing PCB footprints and soldering processes before finalizing procurement decisions.

Selection Notes

Select this component when designing circuits requiring dual 4-to-1 multiplexing with 3-state output control. It is suitable for applications needing noninverting logic functions and bus interfacing capabilities. Consider the AC logic series characteristics for speed and power consumption requirements. Verify that the SOIC-16 package fits the mechanical constraints of the design.

Part Context

This component belongs to the 74AC logic family, known for high-speed CMOS performance. It is functionally similar to other multiplexers in the 74xx series but offers improved switching speeds. The device integrates two independent multiplexers into a single package, reducing board space compared to discrete solutions.

Replacement Considerations

MC74AC253DR2G is listed as a direct replacement. Verify pinout and electrical specifications match exactly. Check for updated RoHS compliance in the replacement part.