74HCT240DB,118

Overview

The Nexperia 74HCT240DB,118 is an octal buffer and line driver featuring inverting 3-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and accepts TTL-level inputs. The device contains two independent output enable controls (1OE and 2OE), each managing four outputs. It utilizes the SO20 plastic small outline package (SOT163-1) with a body width of 7.5 mm. The component supports an ambient operating temperature from -40 °C to +125 °C.

Feature Summary

• Provides inverting buffering for digital signals with high-noise immunity
• Features dual output enables allowing flexible bus configuration
• Includes input clamp diodes for interfacing with voltages exceeding VCC

Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffer circuits
• Control signal routing in industrial systems

Procurement Notes

Verify the specific ordering suffix '118' corresponds to the standard tape-and-reel packaging format required by your assembly line. Confirm that the SO20 package dimensions align with your PCB footprint specifications before finalizing procurement orders.

Selection Notes

Select this component when TTL logic compatibility is required alongside CMOS performance characteristics. Ensure the application environment remains within the specified -40 °C to +125 °C temperature range to maintain reliable operation and prevent latch-up issues.

Part Context

This part belongs to the 74HCT series, designed for high-speed CMOS logic applications requiring TTL-compatible input levels. It serves as a direct replacement for legacy 74LS240 devices in modern designs, offering improved speed and lower power consumption while maintaining pin compatibility.

Replacement Considerations

The 74HC240DB,118 is a compatible alternative if CMOS input levels are acceptable. Verify that the HC series input voltage thresholds meet the driving source requirements of your specific circuit design.