Texas Instruments

SN74HCT573N

SN74HCT573N Description

The SN74HCT573N from Texas Instruments is a high-speed 8-bit transparent D-type latch with 3-state outputs, designed for bus interface applications. Housed in a 20-pin DIP (Dual In-line Package), this through-hole-mount IC operates within a 4.5V to 5.5V supply range, making it compatible with 5V TTL logic systems. It features 8 parallel inputs and outputs (8:8 configuration) with a propagation delay of 25ns, ensuring efficient data transfer in time-critical applications. The device is ROHS3 compliant and adheres to REACH environmental standards, making it suitable for industrial and commercial use.

SN74HCT573N Features

• High-Speed CMOS Logic: Combines HCT (High-Speed CMOS) technology with TTL compatibility for seamless integration in mixed-voltage systems.
• 3-State Outputs: Allows bus-oriented applications by enabling high-impedance states, preventing bus contention.
• Balanced Drive Strength: 6mA output current (both high and low) ensures robust signal integrity in noisy environments.
• Wide Operating Voltage (4.5V–5.5V): Supports stable performance across typical 5V logic systems.
• Through-Hole Packaging (20-DIP): Facilitates easy prototyping and breadboarding in development stages.
• Low Power Consumption: Optimized for energy-efficient designs without sacrificing speed.

SN74HCT573N Applications

• Data Bus Buffering: Ideal for microprocessor/microcontroller interfacing, ensuring stable data flow between subsystems.
• Memory Address Latching: Used in SRAM/DRAM systems to hold address lines during read/write cycles.
• Industrial Control Systems: Suitable for PLC I/O modules due to its noise immunity and reliability.
• Automotive Electronics: Employed in dashboard displays and sensor interfaces where 5V logic is prevalent.
• Test & Measurement Equipment: Ensures precise signal routing in data acquisition systems.

Conclusion of SN74HCT573N

The SN74HCT573N stands out for its robust performance, TTL compatibility, and 3-state output control, making it a versatile choice for bus-oriented and data-latching applications. Its through-hole package simplifies prototyping, while its low propagation delay and balanced drive strength ensure reliable operation in demanding environments. Whether used in industrial automation, automotive systems, or embedded computing, this latch delivers speed, efficiency, and interoperability, solidifying its position as a go-to solution for 5V logic designs.