74ACT573SC

Latches Overview

The onsemi 74ACT573SC is an octal latch with 3-STATE outputs housed in a 20-Lead Small Outline Integrated Circuit (SOIC) package. 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 TTL-compatible inputs, buffered common Latch Enable (LE) and Output Enable (OE) signals, and outputs capable of sourcing or sinking 24mA. Propagation delay from Dn to On is typically 6.0ns at 5.0V.

Latches Feature Summary

• Octal latch architecture with three-state output buffers for bus interfacing
• TTL-compatible inputs for direct interface with standard logic families
• Inputs and outputs positioned on opposite sides of the package to facilitate microprocessor connections

Latches Applications

• Microprocessor input/output port expansion
• Bus interfacing applications requiring high impedance states
• Data storage and buffering in digital systems

Latches Procurement Notes

Verify the specific ordering suffix 'SC' corresponds to the 20-Lead SOIC package variant. Confirm RoHS compliance status as datasheets may vary by revision. Ensure the component meets the required operating temperature range and voltage specifications for the target application environment before finalizing procurement.

Latches Selection Notes

Select this component when an octal latch with three-state outputs is required for microprocessor interfaces. The 74ACT573SC offers TTL-compatible inputs suitable for 5V logic systems. Consider the SOIC-20 package dimensions for PCB layout constraints. Verify that the propagation delay and drive current meet system timing and load requirements.

Latches Part Context

This part belongs to the 74ACT573 family of octal latches with three-state outputs. It is functionally identical to the 74AC573 but includes TTL-compatible inputs. The 'SC' suffix specifically denotes the 20-Lead Small Outline Integrated Circuit (SOIC) package type, distinguishing it from SOP, TSSOP, or PDIP variants within the same logical family.

Latches Replacement Considerations

The 74AC573SC is functionally identical to the 74ACT573SC regarding logic operations, differing primarily in input threshold characteristics. Other package variants such as 74ACT573SJ or 74ACT573MTC offer the same functionality in different physical footprints.