MC74ACT573DTR2G

Latches Overview

The MC74ACT573DTR2G is an octal D-type transparent latch with 3-state outputs manufactured by onsemi. It operates within a supply voltage range of 4.5 V to 5.5 V and features TTL-compatible inputs. The device provides buffered common Latch Enable (LE) and Output Enable (OE) inputs, allowing easy interface with microprocessors due to inputs and outputs being located on opposite sides of the package. Propagation delay from data input to output is typically 10.5 ns at 5 V, with a maximum quiescent supply current of 8 uA. Outputs can source or sink up to 24 mA.

Latches Feature Summary

• Features inputs and outputs on opposite sides of the package for simplified microprocessor interfacing
• Includes buffered common Latch Enable and Output Enable control lines
• Provides 3-state outputs suitable for bus interfacing applications
• Incorporates TTL-compatible inputs for direct logic level compatibility

Latches Applications

• Input or output port expansion for microprocessor systems
• Bus interfacing requiring high-impedance states
• Octal data latching in digital logic circuits

Latches Procurement Notes

Verify that the ordering suffix 'DTR2G' corresponds specifically to the TSSOP-20 package and tape-and-reel shipping configuration. Confirm the 'G' suffix indicates lead-free compliance as documented in the manufacturer's ordering information. Ensure the component matches the ACT series specifications rather than the AC series regarding input thresholds and operating voltage ranges.

Latches Selection Notes

Select this component when TTL-compatible inputs are required alongside 3-state outputs in an octal latch configuration. The TSSOP-20 package is suitable for surface-mount applications requiring compact footprint. Verify that the 4.5 V to 5.5 V operating voltage range aligns with the system power supply. Consider the propagation delay characteristics if timing constraints exist between data inputs and latch enable signals.

Latches Part Context

This part belongs to the MC74ACT573 family of octal latches. It is functionally identical to the MC74AC373/74ACT373 but differs in pinout orientation, placing inputs and outputs on opposite sides. The ACT series distinguishes itself from the AC series through TTL-compatible input thresholds, facilitating easier integration with legacy logic families while maintaining CMOS performance characteristics.

Latches Replacement Considerations

MC74ACT573DWG serves as a rail-pack alternative in the SOIC-20 package. MC74ACT573DWR2G offers the same functionality in a different SOIC-20 tape-and-reel configuration. Cross-reference package dimensions and marking diagrams to ensure mechanical compatibility during substitution.