74LVT573WM

Latches Overview

The Fairchild Semiconductor 74LVT573WM is a low voltage octal transparent latch featuring three-state outputs. It operates within a supply voltage range of 2.7V to 3.6V and utilizes advanced silicon-gate CMOS technology for high noise immunity and low power consumption. The device provides eight D-type latches with independent latching controls, offering a propagation delay of 4.1ns and output drive capabilities of up to 64mA. Packaged in a 20-pin SOIC format, it supports surface mount installation and functions reliably across an operating temperature range of -40°C to 85°C.

Latches Feature Summary

• Octal transparent latch architecture with independent latching control for each bit
• Three-state outputs enabling direct bus connections without external drivers
• Advanced silicon-gate CMOS technology ensuring high noise immunity and low power dissipation
• High current drive capability supporting direct interface with CMOS, NMOS, and TTL loads

Latches Applications

• Buffer registers and transient storage in data acquisition systems
• Driving bus-oriented memories and switches
• Clock domain crossing synchronization circuits
• Portable instrumentation requiring low voltage operation

Latches Procurement Notes

Verify the specific suffix 'WM' corresponds to the 20-SOIC package and tape-and-reel or tube packaging requirements. Confirm RoHS compliance status as manufacturing practices may vary by production lot. Ensure the supplier provides valid traceability documentation for industrial applications. Cross-reference the manufacturer part number with current distributor catalogs to confirm availability and lead times, as component obsolescence affects sourcing strategies.

Latches Selection Notes

Select this component when designing systems requiring octal data latching at low voltages between 2.7V and 3.6V. It is suitable for applications needing high drive strength and fast propagation delays compared to standard logic families. Consider the 20-SOIC package constraints regarding PCB space and thermal management. Verify that input voltage levels are compatible with the system's logic thresholds to ensure reliable switching performance.

Latches Part Context

This part belongs to the LVT (Low Voltage TTL) series of logic devices, designed to bridge the gap between traditional 5V logic and modern 3.3V systems. The 74LVT573 variant specifically offers enhanced speed and drive current over previous generations like the 74HC573. It serves as a key building block for digital data path management in embedded controllers and communication interfaces.

Latches Replacement Considerations

Direct substitutes include the MM74HCT573WM for 5V operations, though voltage compatibility must be verified. Other equivalents from different manufacturers may require checking pinout consistency and electrical parameter alignment. Always validate functional equivalence through simulation or prototyping before finalizing design changes.