74LVTH2244SJ

Buffers, Drivers, Receivers, Transceivers Overview

The 74LVTH2244SJ is an octal buffer and line driver fabricated with advanced BiCMOS technology. It operates within a supply voltage range of 2.7V to 3.6V, supporting a maximum input voltage of 5.5V for TTL interface compatibility. The device features 3-state outputs capable of sourcing -12mA and sinking 12mA. It includes equivalent 25Ω series resistors in the output paths to reduce signal overshoot and undershoot. Propagation delays are specified at 4.4ns (max) at 2.7V and 5.3ns (max) at 3.3V. The component utilizes a 20-lead Small Outline Package (SOP).

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Bushold data inputs eliminate the need for external pull-up resistors to hold unused inputs.
• Equivalent 25Ω series resistors integrated in the outputs help reduce overshoot and undershoot.
• Power Up/Down high impedance provides glitch-free bus loading during power transitions.

Buffers, Drivers, Receivers, Transceivers Applications

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

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering number against current manufacturer databases due to historical Fairchild Semiconductor integration changes. Confirm that the SOP package designation matches the required EIAJ TYPE II physical dimensions. Ensure compliance with JEDEC J-STD-020B lead-free standards if applicable to the assembly process.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when low-voltage operation at 3.3V is required alongside 5V tolerance on input lines. The bushold feature is critical for designs where unused inputs must remain stable without external components. Verify that the 25Ω internal resistance aligns with transmission line termination requirements to minimize signal integrity issues.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the LVT/LVTH logic family, designed for low-voltage applications while maintaining compatibility with 5V environments. It is manufactured using BiCMOS technology to achieve high-speed performance similar to 5V ABT logic families while maintaining lower power dissipation characteristics suitable for dense PCB layouts.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The 74LVT2244SJ serves as a non-bushold variant within the same logical family. Cross-referencing with other manufacturers' 74LVT2244 equivalents requires verification of the bushhold functionality and package pinout compatibility.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the function of the bushhold feature in the 74LVTH2244?

The bushhold feature ensures that unused data inputs remain in a defined state without requiring external pull-up resistors, simplifying the circuit design.

How does the device handle live insertion or extraction?

The device permits live insertion and extraction by providing power-up/down high impedance, which prevents glitching on the bus during these events.