74LVC541AD,118

Overview

The 74LVC541AD,118 is an octal buffer and line driver manufactured by Nexperia USA Inc. It features 3-state outputs and operates within a supply voltage range of 1.2 V to 3.6 V. The device includes IOFF circuitry for partial power-down applications, preventing damaging backflow current. Inputs are overvoltage tolerant up to 5.5 V, allowing direct interfacing with 3.3 V or 5 V devices in mixed-voltage environments. Schmitt-trigger action at all inputs provides tolerance for slower rise and fall times. The component is housed in a 20-lead SO plastic small outline package (SOT163-1) and supports ambient temperatures from -40 °C to +125 °C.

Feature Summary

• Octal buffer/line driver with 3-state outputs
• IOFF circuitry prevents backflow current during partial power-down
• Overvoltage tolerant inputs up to 5.5 V for mixed 3.3 V and 5 V environments
• Schmitt-trigger inputs tolerate slow input transition rates

Applications

• Mixed 3.3 V and 5 V bus driving
• Partial power-down mode operation
• Bus-oriented memory and signal switching

Procurement Notes

Verify the specific ordering suffix matches the required package type, as the 74LVC541A series includes alternative packages such as TSSOP20 and DHVQFN20. Confirm that the selected variant meets the necessary thermal dissipation requirements for the intended operating temperature range. Ensure design compliance with the absolute maximum ratings defined in the product data sheet to prevent permanent damage.

Selection Notes

Select this component when an 8-bit non-inverting buffer with high-impedance states is required for bidirectional buses. The 5 V tolerant inputs make it suitable for translating signals between different logic voltage domains without external level shifters. Consider the package dimensions and lead pitch if space constraints exist on the printed circuit board layout.

Part Context

This part belongs to the 74LVC541A family of octal buffers and line drivers. The 'AD' designation specifically identifies the SO20 plastic small outline package variant. Other variants in the same logical family include the APW version in a TSSOP20 package and the ABQ version in a DHVQFN20 package, offering flexibility for different mounting and thermal requirements.

Replacement Considerations

Direct pin-compatible substitutes within the same manufacturer's portfolio include the 74LVC541APW (TSSOP20 package) and the 74LVC541ABQ (DHVQFN20 package). Cross-manufacturer replacements require verification of electrical characteristics, pinout compatibility, and package dimensions.