MC74ACT540DWR2G

Overview

The MC74ACT540DWR2G is an octal buffer and line driver manufactured by onsemi, belonging to the 74ACT logic series. It features eight inverting outputs with three-state capability, housed in a 20-pin SOIC package. The device operates within a supply voltage range of 4.5 V to 5.5 V. It provides high drive strength with maximum output currents of -24 mA for high state and 24 mA for low state. The component supports industrial operating temperatures from -40°C to +85°C and exhibits a typical propagation delay of 9 ns at 50 pF load.

Feature Summary

• Octal configuration providing eight independent inverting buffer channels
• Three-state output control allowing bus-oriented connections
• High-current drive capability suitable for driving heavy loads
• CMOS construction ensuring low static power consumption

Applications

• Bus-oriented systems requiring signal buffering
• Clock distribution networks
• Memory address and data register drivers
• Control signal routing in industrial environments

Procurement Notes

Verify the specific suffix DWR2G corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm RoHS compliance status and material declaration details through official manufacturer documentation prior to finalizing procurement specifications. Ensure the ordering part number matches the exact electrical characteristics and package dimensions defined in the current datasheet revision.

Selection Notes

Select this component when designing systems that require octal buffering with active-low inversion and three-state isolation capabilities. The ACT series offers faster switching speeds compared to standard HC logic while maintaining CMOS input compatibility. Consider the 24 mA output drive strength for applications interfacing with TTL-compatible loads or long trace lengths where signal integrity is critical.

Part Context

This part belongs to the MC74ACT family of high-speed CMOS logic devices produced by onsemi. The 74ACT series bridges the performance gap between older TTL technologies and modern CMOS solutions, offering compatible pinouts and noise margins while delivering superior speed. The octal buffer variant is commonly used in parallel data transmission architectures.

Replacement Considerations

MC74AC540DWR2G: Non-inverting version with identical package and electrical parameters except for polarity.