MC74AC240DWR2

Overview

The MC74AC240DWR2 is an octal buffer and line driver manufactured by onsemi, belonging to the AC logic series. It features eight inverting inputs with three-state outputs housed in a 20-SOIC package. The device operates within a supply voltage range of 2 V to 6 V. Key electrical parameters include a high-level output current of -24 mA and a low-level output current of 24 mA. Static current is specified at 8 uA, while operating supply current reaches 80 uA. Propagation delay is 8 ns at 3.3 V and 6.5 ns at 5 V. The component supports surface mount installation and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Provides octal buffering and line driving capabilities with inverted signal polarity.
• Features three-state outputs for effective bus line management and isolation.
• Supports symmetrical output impedance with high drive currents for transmission line applications.

Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffer circuits
• Transmission line driving

Procurement Notes

Verify the specific suffix DWR2 against official datasheets to confirm the SOIC-20 package and tape-and-reel packaging configuration. Ensure compatibility with RoHS directives if required by the target assembly process. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before procurement.

Selection Notes

Select this component when designing systems requiring octal data buffering with inversion and three-state control. The AC logic family offers a balance of speed and power consumption suitable for general-purpose digital interfaces. Consider the 2-to-6 V operating range and 24 mA drive capability when matching load requirements. Verify that the SOIC-20 footprint aligns with the PCB layout constraints.

Part Context

This component is part of the MC74AC240 series from onsemi, designed as an octal buffer/line driver. It is functionally compatible with the standard 74AC240 specification. The device serves as a critical interface element in digital logic circuits, facilitating signal integrity across bus structures. It belongs to the broader category of CMOS logic integrated circuits produced by onsemi.

Replacement Considerations

MC74AC240DWG (Same Logic, Different Package: SOIC-20 vs TSSOP-20)

FAQ

Is the MC74AC240DWR2 inverting or non-inverting?

The MC74AC240DWR2 is an inverting buffer/line driver, meaning the output signals are logically opposite to the input signals.

What is the maximum supply voltage for this device?

The maximum operating supply voltage for the MC74AC240DWR2 is 6 V.