74AC573MTR

Overview

The STMicroelectronics 74AC573MTR is an octal D-type latch with non-inverting 3-state outputs, fabricated using advanced sub-micron silicon gate and double-layer metal wiring C2MOS technology. It operates within a supply voltage range of 2V to 6V. The device features high-speed performance with a typical propagation delay of 4.5ns at VCC = 5V and low power dissipation with a maximum quiescent current of 4μA at 25°C. It provides symmetrical output impedance with minimum source/sink currents of 24mA and includes protection circuits against static discharge for 2kV ESD immunity.

Feature Summary

• Advanced CMOS fabrication utilizing sub-micron silicon gate and double-layer metal wiring technology
• High noise immunity with input thresholds defined as a percentage of the supply voltage
• Capable of driving 50Ω transmission lines with balanced propagation delays
• Integrated protection circuits providing immunity against static discharge and transient excess voltage

Applications

• Bus interfacing applications requiring 3-state outputs
• Input or output port expansion for microprocessors
• Systems requiring transparent latching controlled by Latch Enable (LE) signals
• Low-power digital logic designs operating between 2V and 6V

Procurement Notes

Verify that the ordering suffix 'MTR' corresponds to the tape and reel packaging format specified in the datasheet order codes. Confirm the package type matches the required mechanical dimensions, such as SO-20. Ensure the component meets RoHS compliance standards if required by the manufacturing process. Check for any specific handling precautions related to the sub-micron CMOS technology used in fabrication.

Selection Notes

Select this component when an octal latch with 3-state outputs is needed for bus-oriented systems. It is suitable for designs requiring high speed and low power consumption. Consider the 2V to 6V operating voltage range for compatibility with various logic families. The symmetrical output impedance makes it appropriate for driving transmission lines. Verify pin compatibility with existing 74 series 573 layouts if replacing older technologies.

Part Context

The 74AC573 belongs to the AC family of octal latches, offering improved speed over standard HC or HCT counterparts while maintaining lower power consumption than ABT devices. It is functionally similar to other octal latches but distinguished by its specific pinout and 3-state control inputs. The MTR suffix indicates a specific surface-mount packaging variant designed for automated assembly processes.

Replacement Considerations

SN74AC573DWR