74LVT240SJ

Overview

The onsemi 74LVT240SJ is a low-voltage octal buffer and line driver featuring 3-state outputs, housed in a 20-lead Small Outline Package (SOP) with a 5.3mm width. Designed for 3.3V VCC applications, it supports a supply voltage range of 2.7V to 3.6V and operates within a temperature range of -40°C to +85°C. The device provides TTL interface capability to 5V systems, allowing input voltages up to 5.5V while maintaining low power dissipation through advanced BiCMOS technology.

Feature Summary

• Provides live insertion/extraction support without bus contention
• Ensures glitch-free operation during power-up and power-down cycles via high-impedance states
• Delivers strong drive capabilities with specified source and sink currents

Applications

• Memory address drivers
• Clock signal distribution
• Bus-oriented transmitters and receivers

Procurement Notes

Verify the specific package variant SJ against the datasheet ordering information to confirm the 20-lead SOP form factor. Ensure compatibility with the required operating temperature range and voltage levels. Check for any obsolescence notices or lifecycle status changes from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when an octal buffer with 3-state control is required for low-voltage logic interfacing. It is suitable for designs needing tolerance to 5V inputs while operating at 3.3V. Consider the 74LVTH240 if bushold functionality for unused inputs is necessary, as the standard 74LVT240 does not include this feature.

Part Context

This part belongs to the LVT logic family, designed for low-voltage digital applications. It offers performance similar to 5V ABT series devices but with reduced power consumption. The device is functionally compatible with standard 74 series 240 buffers, facilitating upgrades in existing designs requiring lower voltage operation.

Replacement Considerations

The 74LVTH240SJ is a functional alternative within the same family, distinguished by the inclusion of bushold data inputs. Other variants such as the WM, MSA, and MTC packages offer different physical footprints but share identical electrical characteristics.