74HC540D-Q100J

Overview

The Nexperia 74HC540D-Q100J is an octal buffer and line driver with inverting, three-state outputs. It operates within a supply voltage range of 2.0 V to 6.0 V and is qualified to AEC-Q100 Grade 1 standards for automotive applications. The device features two active LOW output enable inputs (OE1 and OE2) that control the high-impedance OFF-state. Inputs include clamp diodes to support interfacing with voltages exceeding VCC. It is housed in a SO20 plastic small outline package (SOT163-1) with a body width of 7.5 mm.

Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 1 standards
• Dual active LOW output enables for flexible bus management
• Input clamp diodes allow safe interfacing with voltages above VCC
• High noise immunity with latch-up performance exceeding JESD 78 Class II Level B

Applications

• Automotive electronic systems requiring robust signal buffering
• Bus-oriented transmissions utilizing three-state logic
• Mixed-voltage environments where input overvoltage tolerance is required

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct package type and temperature grade. Confirm availability status directly with authorized distributors or Nexperia sales offices, as production status may vary. Ensure design compliance with AEC-Q100 requirements if intended for automotive use.

Selection Notes

Select this component when an octal inverting buffer with three-state capability is required for automotive-grade designs. The wide supply voltage range supports various logic families. Verify that the SO20 package dimensions fit the PCB layout constraints. Consider the dual enable inputs for complex bus arbitration schemes compared to single-enable alternatives.

Part Context

This part belongs to the Nexperia 74HC540-Q100 family of octal buffers. It shares functional similarities with other 74HC series devices but is specifically optimized for automotive reliability. The 'D' designation indicates the SO20 package variant, while the '-Q100J' suffix denotes automotive qualification and specific packaging details defined by the manufacturer.

Replacement Considerations

Direct replacements must match the octal buffer function, three-state outputs, and AEC-Q100 Grade 1 qualification. Verify pinout compatibility with the SO20 package. Check supply voltage ranges and propagation delays to ensure system timing requirements are met without modification.