74ACT125PC

Buffers, Drivers, Receivers, Transceivers Overview

The 74ACT125PC 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 features TTL-compatible inputs. The device provides non-inverting buffering for four independent channels, capable of sourcing or sinking 24mA at the outputs. Propagation delay is typically 6.5ns at 5V with a 50pF load. It is housed in a 14-lead Plastic Dual-In-Line Package (PDIP) conforming to JEDEC MS-001 standards.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Contains four independent non-inverting buffers with 3-state outputs
• Features reduced quiescent supply current compared to standard AC logic
• Outputs are capable of sourcing and sinking 24mA drive current
• ACT variant includes TTL-compatible input thresholds

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented memory and address drivers
• Clock distribution circuits
• Data bus transceivers
• General-purpose buffering for digital logic systems

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the manufacturer origin, as this part was originally produced by Fairchild Semiconductor before its acquisition by onsemi. Confirm that the PDIP package matches the required footprint for your PCB design. Ensure the ACT logic family specifications align with your system's voltage levels and timing requirements before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a quad buffer with high drive capability and 3-state control is required. The ACT series ensures compatibility with TTL logic levels while offering faster switching speeds than standard LS families. Consider the PDIP package only if through-hole mounting is necessary for your assembly process.

Buffers, Drivers, Receivers, Transceivers Part Context

This component belongs to the 74AC/ACT logic family, known for high-speed operation and low power consumption. The 74ACT125 specifically addresses applications requiring buffered signals with tri-state capabilities. It serves as a fundamental building block for digital signal routing and isolation in complex electronic systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Compatible substitutes include other 74ACT125 variants from different manufacturers, such as those in SOIC or TSSOP packages. Cross-reference with 74HC125 devices if lower voltage operation is acceptable, though input/output characteristics will differ.