STMicroelectronics

74LCX573TTR  

Latches

74LCX573TTR Description

The 74LCX573TTR is a high-performance, low-voltage octal D-type transparent latch from STMicroelectronics, designed for 2V to 3.6V operation. This 8:8 latch features 3-state outputs, making it ideal for bus-oriented applications. Housed in a compact 20-pin TSSOP package, it is optimized for surface-mount (SMT) assembly and supplied in Tape & Reel (TR) for automated production. With a propagation delay of just 1.5ns, it ensures high-speed data transfer, while its 24mA output drive capability supports robust signal integrity. Although marked as Obsolete, it remains relevant for legacy designs due to its low power consumption and RoHS3 compliance.

74LCX573TTR Features

• Low-Voltage Operation: Supports 2V–3.6V, making it suitable for battery-powered and mixed-voltage systems.
• High-Speed Performance: 1.5ns propagation delay ensures efficient data latching in time-critical applications.
• Balanced Output Drive: 24mA sink/source current minimizes signal degradation in heavily loaded buses.
• 3-State Outputs: Enables bus sharing and reduces contention in multi-device systems.
• Robust Packaging: 20-TSSOP with MSL 3 (168 hours) moisture sensitivity, ensuring reliability in humid environments.
• Compliance: ROHS3 and REACH Unaffected, meeting environmental regulations.

74LCX573TTR Applications

• Data Buffering: Ideal for microprocessor/microcontroller interfaces requiring temporary data storage.
• Bus Isolation: Used in shared bus architectures (e.g., memory arrays, peripheral drivers) to prevent data corruption.
• Port Expansion: Extends I/O capabilities in FPGA/CPLD-based systems without additional logic.
• Low-Power Systems: Fits portable electronics (e.g., IoT sensors, handheld devices) due to its 2V minimum supply.
• Legacy Upgrades: Replaces older 5V logic in 3.3V/2.5V migrations while maintaining signal integrity.

Conclusion of 74LCX573TTR

The 74LCX573TTR combines speed, low-voltage operation, and high drive strength, making it a versatile choice for bus-interfacing and data latching in modern and legacy systems. While obsolete, its performance metrics and compliance standards ensure continued suitability for low-power, high-speed designs. Engineers should evaluate alternatives for new projects but can leverage this latch for cost-sensitive or backward-compatible applications.

74LCX573TTR Documents

Download datasheets and manufacturer documentation for 74LCX573TTR

Datasheets :

74LCX573      

HTML Datasheet :

74LCX573