SN74LVTH240IPWREP

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVTH240IPWREP is an octal buffer and line driver designed for low-voltage 3.3-V VCC operation with TTL interface capability to 5-V systems. It features two independent 4-bit drivers with separate output-enable inputs. The device supports mixed-mode signal operation, allowing 5-V input and output voltages while powered by a 3.3-V supply. It includes active bus-hold circuitry on data inputs to eliminate the need for external pullup or pulldown resistors. The component provides Ioff and power-up 3-state support to ensure high-impedance states during power transitions, preventing backflow current and driver conflicts.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation with 5-V tolerant inputs and outputs while operating at 3.3 V
• Active bus-hold circuitry maintains valid logic states on unused or undriven data inputs
• Ioff and power-up 3-state functionality ensures safe hot-insertion without damaging backflow currents
• Enhanced Diminishing Manufacturing Sources (DMS) support with controlled baseline manufacturing

Buffers, Drivers, Receivers, Transceivers Applications

• Hot-insertion applications requiring safe power-up and power-down sequencing
• Mixed-signal environments interfacing 5-V TTL logic with 3.3-V CMOS systems
• Bus buffering where external pullup/pulldown resistors are undesirable
• Unregulated battery operation down to 2.7 V

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix IPWREP against the latest Texas Instruments documentation to confirm package type, temperature range, and environmental compliance. Confirm that the NRND status does not impact long-term availability requirements for your design. Ensure that the TSSOP-20 pinout matches your PCB footprint and that thermal management guidelines for the PW package are adhered to during assembly.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems that require driving 8 lines with 3-state control while maintaining compatibility between 5-V and 3.3-V logic domains. The integrated bus-hold feature simplifies board layout by removing external resistor networks. Consider the propagation delay characteristics at 3.3 V and 2.7 V to ensure timing margins are met for your specific clock speeds and load conditions.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVTH240-EP series, which is an enhanced plastic variant of the standard LVTH240 octal buffer. It is distinct from non-enhanced versions by offering improved manufacturing stability and DMS support. The device is categorized under buffers and line drivers within the logic IC family, specifically optimized for low-voltage biCMOS applications requiring robust signal integrity.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The catalog version SN74LVTH240 serves as the standard commercial equivalent. For military-grade requirements, the SN54LVTH240 is the qualified alternative. Verify that any substitute maintains the same TSSOP-20 package dimensions and electrical specifications for 3.3-V operation.