MM74HCT573SJ

Latches Overview

The MM74HCT573SJ is an octal transparent D-type latch manufactured by Fairchild Semiconductor, belonging to the 74HCT logic series. It features a single circuit configuration with eight non-inverting outputs and tri-state capability. The device operates within a supply voltage range of 4.5V to 5.5V and supports a propagation delay of 25ns. It is housed in a 20-SOP surface-mount package with a width of 5.30mm and functions reliably across an operating temperature range of -40°C to 85°C.

Latches Feature Summary

• Octal D-type transparent latch architecture providing eight independent data storage channels
• Tri-state output functionality enabling effective bus line driving and isolation
• CMOS construction ensuring low static power consumption compatible with TTL inputs

Latches Applications

• Parallel-to-serial data conversion circuits
• Register file implementations in microprocessor systems
• Buffering and latching of address/data buses

Latches Procurement Notes

Verify the manufacturer origin as Fairchild Semiconductor or its successor entities like onsemi, as production rights may have transferred. Confirm the specific SOP-20 package dimensions match the 5.30mm width specification. Ensure the component meets RoHS compliance requirements for your assembly process. Check for any obsolescence notices or last-time buy notifications given the age of the HCT series.

Latches Selection Notes

Select this component when an octal latch with tri-state outputs is required for 5V logic applications. The HCT series ensures compatibility with standard TTL input levels while maintaining CMOS efficiency. Consider the 20-SOP package for space-constrained surface-mount designs. Verify that the 25ns propagation delay meets the timing constraints of your target system frequency.

Latches Part Context

This part belongs to the widely used 74HCT family of high-speed CMOS logic devices. The 74HCT573 specifically serves as an octal transparent latch, often utilized in digital systems for temporary data storage and bus interfacing. It is functionally similar to other octal latches but distinguished by its specific HCT speed and voltage characteristics.

Latches Replacement Considerations

Equivalent parts include the MM74HCT573MTCX (TSSOP-20) and MM74HCT573WMX (SOIC-20). Cross-reference with National Semiconductor or Texas Instruments equivalents such as SN74HCT573 if sourcing from different manufacturers.