74ACT373SJX

Latches Overview

The Fairchild Semiconductor 74ACT373SJX is an octal transparent latch featuring three-state outputs, belonging to the ACT logic series. It utilizes advanced silicon-gate CMOS technology and operates within a voltage range of 4.5 V to 5.5 V. The device contains eight D-type latches in a single package with 20 pins in a SOIC-20 surface-mount configuration. Key electrical parameters include a propagation delay of 8 ns, output current capability of 24 mA for both sourcing and sinking, and an operating temperature range from -40°C to 85°C.

Latches Feature Summary

• Transparent data operation when Latch Enable is HIGH, allowing direct passage of input signals to outputs.
• Data retention capability when Latch Enable transitions to LOW, storing the state present at the setup time.
• Three-state output control via Output Enable pin, isolating the bus when the pin is HIGH.

Latches Applications

• Bus-oriented system applications requiring data storage and isolation
• Interfacing between microprocessors and peripheral devices
• Memory address latching in digital circuits

Latches Procurement Notes

Verify the specific suffix SJX corresponds to the SOIC-20 lead-free package variant. Confirm RoHS compliance status as historical Fairchild documentation may vary by production batch. Ensure the supplier provides official datasheets matching the ON Semiconductor integration standards following the corporate merger.

Latches Selection Notes

Select this component for designs requiring high-speed octal latching with bus isolation capabilities. The ACT series offers improved speed over standard AC logic while maintaining low power consumption. Verify that the 24 mA drive strength meets the load requirements of the connected circuitry and that the SOIC-20 footprint fits the PCB layout constraints.

Latches Part Context

This part belongs to the 74ACT family of high-speed CMOS logic devices manufactured originally by Fairchild Semiconductor and now managed under ON Semiconductor. The 74ACT373 is functionally compatible with the 74LS373 but offers superior switching speeds and lower power dissipation due to its advanced CMOS construction.

Latches Replacement Considerations

The 74ACT373MTCX serves as a functional equivalent in a TSSOP-20 package. For broader compatibility, verify cross-manufacturer equivalents such as the MC74AC573 or 74VHC373, ensuring pinout and electrical specifications align with the original design requirements.