The HD74ACT373FP is an octal transparent latch with three-state outputs manufactured by Hitachi. This device is part of the Advanced CMOS Technology (ACT) family, offering high speed and low power consumption. It's designed for temporary storage of data in digital systems, allowing data to pass through when the latch is enabled and holding the data when the latch is disabled.

Applications

• Data buffering
• Address latching in memory systems
• I/O port latching
• Microprocessor systems
• Peripheral interfacing

Features

• Octal latch with eight independent latches
• Transparent mode operation
• Three-state outputs for bus interfacing
• High-speed CMOS technology
• Low power consumption

Benefits

• Provides temporary data storage
• Enables efficient data transfer
• Reduces loading on data buses
• Improves system performance
• Conserves power

Additional Details

The HD74ACT373FP operates from a single 5V power supply. It is typically available in a 20-pin SOP (Small Outline Package). Each of the eight latches has a data input (D) and a data output (Q). The latch enable input (LE) controls the transparency of the latch. When LE is high, the Q outputs follow the D inputs. When LE transitions low, the data present at the D inputs is latched and held at the Q outputs. The output enable input (OE) controls the three-state outputs. When OE is low, the outputs are enabled, and the latched data is present at the Q outputs. When OE is high, the outputs are in a high-impedance state, effectively disconnecting them from the bus. The ACT technology ensures high noise immunity and fast propagation delays. The device is compatible with other CMOS and TTL devices. It is crucial to adhere to the recommended operating conditions and timing specifications outlined in the datasheet to ensure proper and reliable operation.