The TC74HC373P is a high-speed CMOS octal D-type transparent latch fabricated by Toshiba Semiconductor and Storage. This device features three-state outputs designed for use in high-performance memory systems, data bus buffering, and general logic applications. The device is pin-compatible with low-power Schottky TTL (LSTTL) series devices, ensuring ease of integration into existing systems. The TC74HC373P operates across a wide voltage range and offers high noise immunity, making it suitable for demanding industrial and commercial environments.

Applications

• Memory Address Latching: Used to latch memory addresses in microprocessor-based systems for reliable data access.
• Data Bus Buffering: Provides buffering of data signals on a data bus to improve signal integrity and drive capability.
• Input/Output Ports: Utilized in I/O port expansion and management within embedded systems.
• Industrial Control Systems: Employed in industrial automation equipment for latching control signals and sensor data.
• General Purpose Logic: Serves as a general-purpose latch in digital circuits for data storage and manipulation.

Features

• High-Speed Operation: Offers significantly faster propagation delays compared to standard CMOS logic.
• Three-State Outputs: Provides high-impedance output state for bus-oriented applications.
• Wide Operating Voltage Range: Operates from 2V to 6V, offering flexibility in power supply selection.
• Low Power Dissipation: Minimizes power consumption, extending battery life in portable applications.
• High Noise Immunity: Provides robust performance in noisy environments.
• Pin and Function Compatible with LSTTL: Simplifies system upgrades and reduces redesign efforts.

Benefits

• Improved System Performance: Faster latching speeds enable higher data throughput and processing capabilities.
• Reduced Bus Loading: Three-state outputs minimize loading on the data bus, enhancing signal integrity.
• Enhanced Design Flexibility: Wide operating voltage range allows for use in diverse applications and systems.
• Extended Battery Life: Low power consumption contributes to longer battery life in portable devices.
• Increased System Reliability: High noise immunity ensures stable operation in harsh environments.
• Simplified System Integration: LSTTL compatibility simplifies the integration of this device into existing systems.

Additional Details

The TC74HC373P is an octal D-type transparent latch. It consists of eight D-type latches with a common latch enable (LE) input and a common output enable (OE) input. When LE is high, data at the D inputs enter the latches. Data at the D inputs are transferred to the Q outputs when LE is high. The outputs follow the data as long as LE is held high. When LE transitions low, the data that was present at the D inputs at the time of the transition is latched. Output Enable (OE) controls the three-state outputs. When OE is low, the outputs are enabled. When OE is high, the outputs are in the high-impedance state. The device is available in a DIP14 package.