M74HC257RM13TR

Overview

The M74HC257RM13TR is a high-speed CMOS quad 2-channel multiplexer with 3-state outputs, fabricated using silicon gate C2MOS technology. It features common select and active-low enable inputs for non-inverting data selection. The device operates within a wide supply voltage range of 2V to 6V. Key electrical characteristics include a typical propagation delay of 11ns at 6V, maximum quiescent current of 4μA, and symmetrical output impedance with minimum drive currents of 6mA.

Feature Summary

• High-speed operation utilizing silicon gate C2MOS technology
• Quad configuration with independent 2-channel multiplexing capability
• Three-state outputs controlled by an active-low enable input
• Built-in protection circuits against static discharge and transient excess voltage

Applications

• Data routing in digital communication systems
• Signal switching in microprocessor-based control units
• Address/data bus multiplexing in embedded designs

Procurement Notes

Verify the specific package type (SO-16) required for your PCB layout, as the M74HC257 series includes DIP and TSSOP variants. Confirm that the active-low OE logic aligns with your system's control signals. Ensure operating conditions remain within the specified -55°C to 125°C temperature range and 2V to 6V supply limits to maintain performance specifications.

Selection Notes

Select this component when a quad 2-to-1 multiplexer with tri-state outputs is needed. It is suitable for applications requiring balanced propagation delays and low power dissipation. Consider the SO-16 surface-mount package for space-constrained designs. Verify compatibility with existing 74-series logic levels if interfacing with legacy components.

Part Context

This part belongs to the STMicroelectronics M74HC257 family of high-speed CMOS logic devices. It is functionally compatible with standard 74 series 257 multiplexers. The RM13 suffix indicates the Tape & Reel packaging format, distinguishing it from tube-packaged versions like the B1R or M1R.

Replacement Considerations

Direct pin-compatible substitutes include other manufacturers' 74HC257 equivalents in SO-16 packages. Verify that alternative parts meet the same 3-state output requirements and operate within the 2V to 6V voltage range.