The HD74LS373RPEL-E-Q is an octal D-type transparent latch manufactured by Renesas Electronics America. It is a member of the 74LS series of logic gates, which are known for their low-power Schottky TTL (Transistor-Transistor Logic) characteristics. This device features eight D-type latches with three-state outputs, making it suitable for temporary data storage and bus interfacing applications.

Applications

• Buffer registers: Used as buffer registers to temporarily store data.
• Address latches: Employed to latch address data in memory systems.
• Data storage: Utilized for temporary data storage in various digital systems.
• Microprocessor systems: Used for interfacing microprocessors with peripheral devices.
• Industrial control systems: Can be found in various control and automation circuits.

Features

• Octal latch: Contains eight independent D-type transparent latches.
• Three-state outputs: Allows the outputs to be in a high, low, or high-impedance state.
• Low power consumption: Operates with low power consumption typical of LS series devices.
• High-speed operation: Provides fast switching speeds for high-performance applications.
• Wide operating voltage range: Operates over a wide supply voltage range, typically 4.75V to 5.25V.
• TTL compatible: Directly compatible with other TTL logic devices.

Benefits

• Simplified data storage: Provides a simple and efficient way to store data temporarily.
• Improved system performance: Fast switching speeds contribute to improved system performance.
• Reduced power consumption: Low power consumption minimizes power requirements.
• Flexible system design: Three-state outputs allow for flexible system design and bus interfacing.
• Easy integration: TTL compatibility simplifies integration with other logic devices.

Technical Specifications: The HD74LS373RPEL-E-Q operates with a typical supply voltage of 5V and has a propagation delay of around 15ns. The output drive capability is typically 8mA. It is commonly available in a 20-pin SOIC (Small Outline Integrated Circuit) package. The enable (LE) input controls the transparency of the latch; when LE is high, the Q outputs follow the D inputs. When LE is low, the data present at the D inputs is latched and remains stored until LE goes high again. The output enable (OE) input controls the output state; when OE is low, the outputs are enabled; when OE is high, the outputs are in the high-impedance state.