M74HC4049B1R

Overview

The M74HC4049B1R is a high-speed CMOS hex inverting buffer fabricated with silicon gate C2MOS technology. It operates within a supply voltage range of 2V to 6V and supports input voltages up to 13V, enabling logic-level conversion from higher-level voltages. The device features symmetrical output impedance with minimum drive currents of 6mA for both high and low states. Propagation delay is typically 8ns at 6V. It includes internal two-stage inverters for stable outputs and enhanced noise immunity.

Feature Summary

• Supports logic-level conversion by accepting input voltages up to 13V while operating on lower supply rails.
• Provides balanced propagation delays with symmetrical output impedance for reliable signal inversion.
• Features high noise immunity through an internal two-stage inverter circuit design.

Applications

• Logic-level translation between circuits operating at different voltage domains
• Inverting buffers for digital signal processing applications
• Interface circuits requiring high noise immunity

Procurement Notes

Verify the package type matches the required installation method, as this part number corresponds to the DIP-16 tube configuration. Confirm that the component meets RoHS3 specifications if environmental compliance is mandatory for the assembly process. Ensure the supplier provides valid traceability documentation given the component's age.

Selection Notes

Select this component when interfacing signals between systems with differing voltage levels, specifically where inputs exceed the receiving system's VCC. The wide operating temperature range makes it suitable for industrial environments. Verify that the DIP-16 package fits the available board space and mounting constraints.

Part Context

This device belongs to the 74HC series of high-speed CMOS logic components manufactured by STMicroelectronics. It is functionally compatible with the standard 74LS4049 series but utilizes modern CMOS technology for lower power consumption and higher speed performance.

Replacement Considerations

Cross-reference with other manufacturers' 74HC4049 equivalents such as those from Texas Instruments or Nexperia. Verify pin compatibility and electrical characteristics before substitution.