74HC240DB,112

Overview

The 74HC240DB,112 is an octal buffer and line driver manufactured by Nexperia under the 74HC logic family. It features eight inverting outputs with three-state capability controlled by two separate output enable inputs (1OE and 2OE). The device operates on a supply voltage range of 2.0 V to 6.0 V and supports ambient temperatures from -40 °C to +125 °C. It is housed in a 20-lead SO plastic small outline package (SOT163-1) and includes input clamp diodes for interfacing with voltages exceeding VCC.

Feature Summary

• Provides eight inverting outputs with independent three-state control via dual enable inputs
• Operates across a wide supply voltage range suitable for various digital logic levels
• Features high noise immunity and robust latch-up protection performance
• Includes built-in ESD protection compliant with industry standards

Applications

• Memory address and data bus drivers
• Clock distribution buffers
• Signal line drivers for communication interfaces

Procurement Notes

Verify the specific ordering suffix '112' against the manufacturer's current production status, as availability may vary. Confirm that the SO20 package type aligns with your PCB footprint requirements. Ensure the component meets the required temperature range specifications for your intended operating environment before finalizing procurement.

Selection Notes

Select this component when designing circuits requiring octal buffering with invert functionality and tri-state isolation. It is appropriate for systems needing CMOS-level input compatibility and operation within the 2.0 V to 6.0 V power domain. Consider the 20-lead package constraints and thermal dissipation characteristics during layout planning.

Part Context

This part belongs to the 74HC series of high-speed CMOS logic devices produced by Nexperia. The series is characterized by low power consumption and compatibility with standard CMOS logic levels. The 74HC240 variant specifically addresses applications requiring multiple buffered outputs with controllable state termination.

Replacement Considerations

Direct functional equivalents include the 74HCT240 for TTL-compatible input levels. Other packages such as TSSOP20 or DHVQFN20 offer alternative form factors with identical electrical specifications.