74HC7540DB,112

Overview

The Nexperia 74HC7540DB,112 is an octal Schmitt trigger buffer and line driver featuring inverting outputs with three-state capability. It operates within a supply voltage range of 2.0 V to 6.0 V and includes two active LOW output enable inputs (OE1 and OE2). The device utilizes Schmitt-trigger inputs to convert slowly changing signals into sharply defined jitter-free outputs. It is housed in a SO20 plastic small outline package (SOT163-1) and supports an operating temperature range from -40 °C to +125 °C.

Feature Summary

• Schmitt-trigger inputs provide high noise immunity and transform slowly changing input signals into sharply defined jitter-free output signals.
• Three-state outputs allow for bus-oriented applications through dual active LOW output enable controls.
• CMOS construction ensures low power dissipation while maintaining high noise immunity and latch-up performance exceeding 100 mA.

Applications

• Bus-oriented memory and signal driving
• Clock distribution and buffering
• Data acquisition systems

Procurement Notes

Verify the specific ordering suffix '112' corresponds to the tube packaging configuration as indicated by the manufacturer's data sheet. Confirm that the SO20 package variant matches the required board layout dimensions. Ensure design compliance with the specified absolute maximum ratings to prevent permanent damage during operation.

Selection Notes

Select this component when designing circuits requiring eight-channel signal inversion with Schmitt-trigger noise filtering. The dual output enables facilitate complex bus management topologies. Verify that the CMOS input levels are compatible with the source logic family driving the inputs.

Part Context

This part belongs to the 74HC series of high-speed CMOS logic devices manufactured by Nexperia. It functions as an octal buffer/line driver, distinct from non-inverting variants or single-channel drivers. The device is designed for general-purpose digital logic applications requiring robust signal integrity across wide voltage ranges.

Replacement Considerations

The 74HC7540D is a direct functional equivalent within the same product family. Verify pinout compatibility and package dimensions before substitution. Ensure the replacement part meets the same electrical specifications and operating temperature requirements.