74LVT240MSAX

Overview

The onsemi 74LVT240MSAX is a low-voltage octal buffer and line driver featuring three-state outputs, housed in a 20-lead shrink small outline package (SSOP). It operates within a supply voltage range of 2.7V to 3.6V and supports an input voltage up to 5.5V, enabling direct interface with 5V systems. The device provides high drive capability with output currents of -32mA for HIGH states and +64mA for LOW states. Designed using advanced BiCMOS technology, it delivers propagation delays as fast as 1.1ns at 3.3V while maintaining low power dissipation.

Feature Summary

• Provides bus hold functionality on data inputs to eliminate the need for external pull-up resistors for unused inputs
• Supports live insertion and extraction without causing system glitches
• Ensures glitch-free bus loading through power-up/down high impedance behavior
• Offers robust latch-up performance exceeding 500mA

Applications

• Memory address drivers
• Clock drivers
• Bus-oriented transmitters or receivers

Procurement Notes

Verify that the component matches the specific SSOP package variant indicated by the MSA suffix. Confirm the datasheet revision aligns with current manufacturing standards, as specifications may evolve. Ensure compatibility with the target operating temperature range of -40°C to +85°C. Check for any specific handling requirements related to moisture sensitivity levels before assembly.

Selection Notes

Select this component when a low-voltage buffer is required to interface between 3.3V logic and 5V environments. The inclusion of bus hold features makes it suitable for designs aiming to reduce external passive components. Consider the SSOP package constraints regarding board space and thermal management compared to wider SOIC alternatives.

Part Context

This part belongs to the 74LVT/74LVTH series of low-voltage octal buffers. It is functionally compatible with the standard 74 series 240 devices but optimized for lower voltage operation. The specific MSAX designation indicates the shrink small outline package configuration with tape and reel availability options.

Replacement Considerations

Direct functional substitutes include other 74LVT240 variants from different manufacturers offering identical pinouts and electrical characteristics. Verify package dimensions carefully when substituting, as SSOP footprints differ from standard SOIC packages.