74ACT125SJ

Buffers, Drivers, Receivers, Transceivers Overview

The 74ACT125SJ is a quad buffer with 3-STATE outputs manufactured by Fairchild Semiconductor. It operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature from -40°C to +85°C. The device features non-inverting logic, providing high-level output current of -24mA and low-level output current of 24mA. Propagation delay is typically 6.5ns at 5V, with maximum limits of 10.0ns across the specified temperature range.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Contains four independent non-inverting buffers with 3-STATE outputs
• Outputs capable of sourcing and sinking 24mA
• ACT series provides TTL-compatible outputs

Buffers, Drivers, Receivers, Transceivers Applications

• General purpose buffering in digital circuits
• Line driving applications requiring 3-state control
• TTL-to-CMOS interface buffering

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'SJ' corresponds to the 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide as defined in the datasheet. Confirm that the component source aligns with Fairchild Semiconductor specifications or authorized distributors, noting that onsemi acquired Fairchild's semiconductor business. Ensure RoHS compliance documentation matches the JEDEC J-STD-020B standard referenced for lead-free packages.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a quad buffer with 3-state capability is required for 5V logic systems. The ACT series ensures compatibility with TTL input thresholds while offering CMOS performance characteristics. Consider the SOP package dimensions if board space constraints require a 5.3mm wide footprint. Verify that the 24mA drive strength meets the load requirements of the destination circuitry.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74AC/ACT logic family, specifically the 74ACT125 variant. It is functionally similar to other quad buffers but distinguished by its 3-state output control and ACT-specific electrical characteristics optimized for 5V operation. The 'SJ' suffix identifies the physical package type, differentiating it from SOIC, TSSOP, or PDIP variants within the same logical family.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Compatible substitutes include the 74AC125SC, 74AC125MTC, and 74AC125PC for AC series equivalents. For direct functional replacement within the ACT series, consider the 74ACT125SC, 74ACT125MTC, and 74ACT125PC, ensuring package compatibility or adapter usage is addressed.