The TC74VHCT573AF(EL) is an octal D-type latch with 3-state outputs manufactured by Toshiba Semiconductor and Storage. This device is part of the VHCT (Very High-Speed CMOS, TTL Compatible) family, offering high-speed performance with TTL-compatible input thresholds. It's commonly used in memory address latching, data buffering, and general-purpose storage applications.

Applications

• Memory address latching
• Data buffering
• Address decoding
• Microprocessor systems
• General-purpose storage

Features

• High-speed operation: Offers fast propagation delay.
• TTL-compatible inputs: Interfaces directly with TTL logic.
• 3-state outputs: Allows for bused applications.
• Octal configuration: Provides eight latches in a single package.
• Low power consumption: Minimizes energy usage.

Benefits

• Improved system performance due to high-speed operation.
• Simplified interfacing with TTL logic.
• Flexibility in bused architectures.
• High density storage in a compact package.
• Reduced power consumption for energy-efficient designs.

Technical Specifications

The TC74VHCT573AF(EL) features a typical propagation delay of around 7ns. The input thresholds are TTL-compatible, with a low-level input voltage of 0.8V and a high-level input voltage of 2.0V. The supply voltage range is typically between 4.5V and 5.5V. The output drive capability is sufficient to drive multiple TTL loads. The device comes in a surface mount package (typically SOIC or TSSOP), facilitating automated assembly. The operating temperature range is from -40°C to +85°C. The quiescent current is very low, contributing to its low power consumption. The device is RoHS compliant, adhering to environmental regulations. It's designed to provide reliable performance in a wide range of digital logic applications where speed and compatibility are critical.

This octal latch is ideally suited for applications where high-speed data storage and retrieval are required. The TTL-compatible inputs make it easy to interface with older TTL logic, while the 3-state outputs allow for efficient sharing of data buses. Its low power consumption and compact size make it suitable for portable and battery-powered devices. Specific applications include memory interface circuits, address decoders, and data buffers in microprocessor-based systems. The latch function is essential for temporary data storage during data transfer or processing.