MC74ACT573DWR2

Latches Overview

The MC74ACT573DWR2G is an octal D-type 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. It supports bus interfacing with outputs capable of sourcing or sinking 24 mA. Propagation delay from data input to output is typically 10.5 ns at 5 V, with a maximum quiescent supply current of 8 µA.

Latches Feature Summary

• Features inputs and outputs on opposite sides of the package for easy microprocessor interfacing
• Includes buffered common Latch Enable and Output Enable inputs
• Provides 3-state outputs suitable for bus interfacing applications
• Contains eight D-type latches with high-speed operation

Latches Applications

• Microprocessor input/output port interfaces
• Bus interfacing systems requiring 3-state control
• Octal storage applications in digital logic circuits

Latches Procurement Notes

Verify the specific ordering suffix 'R2G' corresponds to the SOIC-20 tape and reel packaging configuration. Confirm that the '-Q' suffix variant is not required if automotive qualification or unique site control is necessary. Ensure the procurement documentation matches the Pb-free status indicated by the 'G' suffix. Cross-reference the manufacturer part number with distributor catalogs to confirm availability and exact shipping quantities.

Latches Selection Notes

Select this component when TTL-compatible inputs are required alongside AC speed performance. The MC74ACT573DWR2G is functionally identical to the MC74AC573 but offers specific input threshold characteristics compatible with TTL logic levels. Consider the SOIC-20 package dimensions and thermal resistance values if heat dissipation is a constraint. Verify that the 24 mA output drive capability meets the load requirements of the destination circuitry.

Latches Part Context

This device belongs to the MC74AC/ACT573 series of octal latches. It is functionally identical to the MC74AC373/74ACT373 but distinguishes itself through the placement of inputs and outputs on opposite sides of the package. This layout facilitates easier PCB routing for microprocessor interfaces compared to devices with inputs and outputs on the same side.

Latches Replacement Considerations

The MC74AC573DWR2G is functionally identical to the MC74ACT573DWR2G regarding logic operations, differing primarily in input threshold specifications. For direct replacement, verify that the system can accommodate the AC series input voltage levels if switching from the ACT version.