74LCX573MTR

Latches Overview

The STMicroelectronics 74LCX573MTR is a low-voltage CMOS octal D-type latch with 3-state non-inverting outputs. It operates within a supply voltage range of 2.0V to 3.6V, supporting 1.5V data retention. The device features 5V tolerant inputs and outputs, ensuring compatibility with 5V signal environments. Propagation delay is maximized at 8.0ns at VCC = 3V. It provides symmetrical output impedance with |IOH| = IOL = 24mA (min) at VCC = 3V. The component utilizes sub-micron silicon gate and double-layer metal wiring C2MOS technology for high speed and low power consumption.

Latches Feature Summary

• Features 5V tolerant inputs and outputs for interfacing with 5V signal environments.
• Includes power-down protection on both inputs and outputs.
• Provides balanced propagation delays where tPLH is approximately equal to tPHL.
• Offers ESD immunity exceeding 2000V under HBM testing conditions.

Latches Applications

• Low-power and high-speed 3.3V applications
• PCI bus level interfacing
• Octal D-type latching in digital logic circuits

Latches Procurement Notes

Verify the specific package type required, as the MTR suffix indicates tape and reel packaging in SOP-20 format. Confirm that the operating temperature range of -55°C to 125°C aligns with your system requirements. Ensure input voltages do not exceed absolute maximum ratings to prevent damage. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.

Latches Selection Notes

Select this component when an octal latch with 3-state outputs is needed for 3.3V systems interfacing with 5V signals. Consider its low power consumption compared to 5V AC/ACT families. Verify that the 24mA drive current meets load requirements. Ensure the 20-SOP package fits the available PCB footprint constraints.

Latches Part Context

This part belongs to the 74LCX series of low-voltage CMOS logic devices manufactured by STMicroelectronics. It is functionally compatible with the standard 74 Series 573 but optimized for lower voltage operation. The device is designed to provide similar speed performance at 3.3V while consuming less power than traditional 5V logic families.

Latches Replacement Considerations

Direct substitutes include MC74LCX573DWG from onsemi and SN74LVC573ADWR from Texas Instruments. Verify pinout compatibility and electrical specifications before substitution.