74HC240DB,118

Overview

The Nexperia 74HC240DB,118 is an octal buffer and line driver belonging to the 74HC logic family. It features eight inverting outputs with three-state capability housed in a 20-pin SSOP 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 -7.8 mA and a low-level output current of 7.8 mA. Static current consumption is specified at 8 uA. The component supports surface mount installation and functions reliably across an operating temperature range from -40 °C to +125 °C.

Feature Summary

• Provides octal buffering with inverting logic functionality for signal path management.
• Features three-state outputs allowing effective bus-oriented communication and isolation.
• Includes input clamp diodes to facilitate interfacing with voltages exceeding VCC using current limiting resistors.

Applications

• Bus-oriented systems requiring octal data transmission
• Clock drivers and buffer circuits
• Memory module address and data line buffering

Procurement Notes

Verify component authenticity through authorized Nexperia distributors or verified suppliers. Confirm the specific ordering code matches the required package variant. Check current lifecycle status as availability may be limited due to end-of-life indications. Ensure environmental compliance documentation aligns with project requirements before finalizing procurement decisions.

Selection Notes

Select this component when an octal inverting buffer with three-state control is required. Compare against non-inverting variants like the 74HC241 if polarity differs from design needs. Consider the 74HCT240 if TTL input levels are necessary instead of CMOS levels. Verify that the SSOP-20 package fits the available PCB footprint constraints.

Part Context

This part belongs to the widely adopted 74HC series of high-speed CMOS logic devices manufactured by Nexperia. It serves as a standard solution for digital signal buffering in consumer electronics and industrial equipment. The DB suffix indicates the SSOP-20 plastic small outline package, distinguishing it from other housing options like TSSOP or SO.

Replacement Considerations

Direct substitutes include the 74HC240PW,118 which utilizes a TSSOP-20 package. Other compatible alternatives within the same logic family include the 74HCT240 for TTL-compatible inputs. Verify pinout compatibility and package dimensions before substituting.