74HCT540N-Q100U

Overview

The NXP USA Inc. 74HCT540N-Q100U is an octal inverting buffer and line driver featuring three-state outputs, housed in a DIP20 plastic dual in-line package (SOT146-1). It operates within a supply voltage range of 4.5 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C. The device includes two active LOW output enable inputs (OE1 and OE2) and input clamp diodes for interfacing with voltages exceeding VCC. It complies with JEDEC standard JESD7A and features TTL-level input compatibility.

Feature Summary

• Automotive qualification in accordance with AEC-Q100 Grade 1 standards
• Dual active LOW output enables for independent control of the high-impedance OFF-state
• Input clamp diodes allow current limiting resistor usage for voltages above VCC

Applications

• Automotive electronic systems requiring qualified logic components
• Bus-oriented transmissions utilizing three-state buffering
• High-speed CMOS logic applications compatible with TTL levels

Procurement Notes

Verify the specific suffix 'N' corresponds to the DIP20 package configuration required for your design. Confirm that the automotive grade qualification meets your project's reliability standards. Ensure the operating temperature range aligns with your environmental specifications. Cross-reference the ordering information table to validate the exact part number against your bill of materials before finalizing procurement.

Selection Notes

Select this component when designing circuits that require octal buffering with invert functionality and three-state bus isolation. The HCT series ensures compatibility with TTL logic levels while maintaining CMOS performance characteristics. Consider the DIP20 package constraints regarding board space and thermal dissipation limits specified in the datasheet.

Part Context

This component belongs to the 74HC(H)T540-Q100 family of octal buffers and line drivers. It shares functional similarities with other members of the series but differs in input logic level requirements and specific package options. The Q100 designation indicates automotive-grade qualification, distinguishing it from standard commercial variants.

Replacement Considerations

The 74HCT540D-Q100 serves as a direct functional substitute offering identical electrical characteristics in an SO20 surface-mount package.