74VHCT573AM

Latches Overview

The Fairchild Semiconductor 74VHCT573AM is an octal transparent D-type latch featuring three-state outputs, fabricated using advanced VHCT CMOS technology. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum propagation delay of 8.5 ns at 5 V. The device provides low-level output current of 8 mA and high-level output current of -8 mA, with a static current of 40 uA. It functions reliably across an operating temperature range from -40 °C to +85 °C.

Latches Feature Summary

• Transparent latch operation controlled by dedicated latch enable and output enable inputs
• Three-state outputs allowing direct bus connections without external buffers
• CMOS construction ensuring low power dissipation while maintaining high-speed performance

Latches Applications

• High-performance register files in digital systems
• Buffered input/output circuits for data storage
• Mobile applications requiring low power consumption

Latches Procurement Notes

Verify the specific suffix designation against manufacturer documentation to confirm package type and tape/reel specifications. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer, as availability may vary based on production lifecycle stages.

Latches Selection Notes

Select this component when interfacing between different logic families due to its compatibility with standard TTL voltages. Ensure the design requires an octal latch configuration with three-state capability. Verify that the required propagation delay and drive current meet the system timing and load requirements.

Latches Part Context

This part belongs to the VHCT series, which bridges the gap between HC and HCT logic families by offering TTL-compatible inputs with CMOS performance. It serves as a high-speed alternative to standard HCT latches, providing faster switching speeds while maintaining low power characteristics suitable for battery-operated devices.

Latches Replacement Considerations

Check for equivalents such as the 74VHCT573AMTCX or 74VHCT573AFT(BE) depending on the required surface-mount package. Verify pinout compatibility and electrical parameters before substitution.