74LVC541APW,118

Overview

The Nexperia 74LVC541APW,118 is an octal buffer and line driver featuring three-state outputs housed in a TSSOP20 package. It operates within a supply voltage range of 1.2 V to 3.6 V and supports inputs up to 5.5 V. The device includes IOFF circuitry for partial power-down protection and Schmitt-trigger inputs for noise tolerance. Propagation delay ranges from 1.0 ns to 16.0 ns depending on voltage.

Feature Summary

• Features two active LOW output enable inputs (OE1 and OE2) controlling the high-impedance OFF-state.
• Includes IOFF circuitry that disables outputs to prevent damaging backflow current during partial power-down.
• Schmitt-trigger action at all inputs provides tolerance for slower input rise and fall times.

Applications

• Translating signals between mixed 3.3 V and 5 V logic environments
• Driving bus-oriented loads with controlled impedance
• Buffering memory address and data lines

Procurement Notes

Verify the specific suffix 'PW' corresponds to the TSSOP20 plastic thin shrink small outline package (SOT360-1). Confirm the temperature range covers -40 °C to +125 °C as specified for this variant. Ensure the ordering code matches the exact manufacturer designation to avoid pinout or electrical specification mismatches.

Selection Notes

Select this component when an octal buffer with independent dual output enables is required. It is suitable for designs needing direct interface with TTL levels and overvoltage tolerant inputs. Consider the TSSOP20 package constraints regarding body width and lead pitch for PCB layout compatibility.

Part Context

This part belongs to the 74LVC541A family of octal buffers. Other variants include the SO20 (AD) and DHVQFN20 (ABQ) packages. All share identical electrical characteristics but differ in physical dimensions and thermal properties.

Replacement Considerations

Cross-reference with other 74LVC541A variants such as 74LVC541AD or 74LVC541ABQ if package changes are acceptable. Verify functional equivalence for any third-party octal buffers with similar voltage tolerances and enable configurations.

FAQ

How does the IOFF circuitry function?

The IOFF circuitry disables the outputs when the device is powered down, preventing potentially damaging backflow current through the device.

What is the effect of the OE inputs?

A HIGH level on either OE1 or OE2 causes the associated outputs to assume a high-impedance OFF-state.