MM74HCT573N

Latches Overview

The MM74HCT573N is an octal D-type latch manufactured by onsemi using advanced silicon-gate CMOS technology. It features 3-state outputs and is designed to interface between TTL and NMOS components while remaining pin-compatible with LS-TTL devices. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -55 °C to +125 °C. Key electrical characteristics include a typical propagation delay of 17 ns, maximum quiescent current of 160 µA, and output drive capability for 15 LS-TTL loads.

Latches Feature Summary

• TTL input characteristic compatible
• Low power consumption with wide supply range
• 3-state outputs capable of driving multiple loads
• Input protection against static discharge

Latches Applications

• Bus-oriented systems
• Interface between TTL and NMOS components
• Plug-in replacement for LS-TTL devices

Latches Procurement Notes

Verify the specific package type and suffix against the official datasheet ordering information, as the 'N' suffix typically denotes a PDIP package which may not be listed in the primary surface-mount focused sections of the provided documentation. Confirm RoHS compliance status and check for any discontinuation notices or alternative part numbers if the specific package variant is unavailable.

Latches Selection Notes

Select this component when designing circuits requiring octal latching with 3-state bus capabilities in HCT logic families. Ensure the application environment stays within the specified -55 °C to +125 °C temperature range and that the supply voltage remains between 4.5 V and 5.5 V. Consider the low quiescent current benefits for power-sensitive designs replacing older LS-TTL implementations.

Latches Part Context

This part belongs to the MM74HCT573/MM74HCT574 series, which includes both latches (573) and flip-flops (574). The series utilizes advanced silicon-gate CMOS technology to provide LS-TTL compatibility with reduced power consumption. It is intended for general-purpose digital logic applications requiring data storage and bus interfacing.

Latches Replacement Considerations

Direct substitutes include other manufacturers' 74HCT573 variants in equivalent packages. Verify pinout compatibility and electrical specifications such as propagation delay and output drive strength before substitution.