SN74BCT573NS

Overview

The SN74BCT573NS is an octal transparent D-type latch with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features a propagation delay of 7.3 ns at 5 V. The device supports low-level output currents of 48 mA and high-level output currents of -24 mA, with a maximum operating temperature of +70 °C. It is housed in a 20-pin SOIC package.

Feature Summary

• Octal transparent D-type latch architecture
• Three-state output capability for bus driving
• High drive strength with 48 mA low-level current

Applications

• Registering fast-moving data
• Performing temporary storage operations
• Driving bus-oriented architectures

Procurement Notes

Verify the specific suffix 'NS' corresponds to the 20-pin SOIC package and commercial temperature grade (+70 °C) as defined in official documentation. Confirm RoHS compliance status through the manufacturer's current product information page. Ensure the ordering part number matches the required pin configuration and electrical specifications before finalizing procurement.

Selection Notes

Select this component when designing systems requiring octal latching with three-state outputs in a surface-mount format. It is suitable for applications needing moderate speed and high drive capability within a 5 V logic environment. Consider the 70 °C operating limit for thermal management in enclosed designs.

Part Context

This part belongs to the SN74BCT series, which combines BiCMOS technology for high speed with CMOS low power consumption. The BCT family is designed for high-density memory addressing and bus-oriented systems. The SN74BCT573 specifically provides eight D-type latches with tri-state outputs for efficient data handling.

Replacement Considerations

Compatible substitutes include SN74BCT573N (PDIP package) and SN74BCT573PW (TSSOP package). Verify pin compatibility and package dimensions when replacing the SOIC variant.