74LVT240MTC

Overview

The onsemi 74LVT240MTC is an inverting octal buffer and line driver featuring three-state outputs, housed in a 20-lead Thin Shrink Small Outline Package (TSSOP). It operates within a supply voltage range of 2.7V to 3.6V and supports DC input voltages up to 5.5V. The device provides high drive capability with output currents of -32mA for HIGH states and +64mA for LOW states. Propagation delays are specified at 1.1ns minimum and 4.6ns maximum at 2.7V, and 1.1ns minimum and 4.0ns maximum at 3.3V.

Feature Summary

• Provides interface capability between low-voltage systems and 5V environments
• Supports live insertion and extraction without bus contention
• Delivers glitch-free bus loading during power-up and power-down cycles

Applications

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

Procurement Notes

Verify the specific package variant against the datasheet ordering information to ensure compatibility with the 20-lead TSSOP footprint. Confirm that the application environment remains within the recommended operating conditions, specifically the 2.7V to 3.6V supply voltage range. Ensure input signals do not exceed the absolute maximum ratings for DC input voltage.

Selection Notes

Select this component when designing for low-voltage 3.3V applications requiring TTL-level interfacing to 5V systems. The device is suitable for designs prioritizing improved PC board density due to its octal configuration. Consider the specific propagation delay requirements relative to the chosen supply voltage to ensure timing margins are met.

Part Context

This component belongs to the LVT logic family, fabricated using advanced BiCMOS technology. It offers high-speed operation comparable to 5V ABT series devices while maintaining low power dissipation characteristics. The device is functionally compatible with standard 74 series 240 buffers, facilitating design transitions.

Replacement Considerations

The 74LVTH240MTC is a functional alternative within the same family, distinguished by the inclusion of bus-hold data inputs which eliminate the need for external pull-up resistors for unused inputs.