The M74HCT573B1R from STMicroelectronics is a high-speed CMOS octal latch with three-state outputs that is designed to interface directly with the TTL family. This integrated circuit is a crucial component in digital electronics where temporary storage of data is needed, serving as a buffer or a holding register.

Key Features

• Logic Type: Octal D-Type Transparent Latch
• Output Type: 3-State
• Supply Voltage Range: 4.5V to 5.5V
• IC Output Current: 6 mA
• Propagation Delay Time: 18 ns
• Operating Temperature Range: -55°C to +125°C
• Package: DIP-20 (Dual In-line Package)
• Pin Count: 20
• Compatibility: TTL Input Compatibility

Product Applications

The M74HCT573B1R is suitable for a wide range of applications in digital systems where a temporary data storage is required. It's commonly used in:

• Buffering and data storage
• Input/output port expansion
• System control
• Addressable latch
• Data multiplexing
• Industrial electronics

Product Description

The device consists of eight latches with three-state outputs for bus-organized systems. The flip-flops appear transparent to the data when Latch Enable (LE) is HIGH. When LE is LOW, the data that meets the setup time is latched. Data appears on the bus when the Output Enable (OE) is LOW. When OE is HIGH, the bus output is in a high impedance state, which means there is no active connection to the bus.

With its robust design, the M74HCT573B1R guarantees operation over a wide range of supply voltages and is protected against latch-up through the ESD protection circuitry. The pin configuration and the function of each pin are industry-standard, making this device easy to implement in various circuits without the need for significant design changes.

Quality and Reliability

STMicroelectronics ensures that the M74HCT573B1R meets the highest quality and reliability standards. The device is fabricated with silicon gate C2MOS technology, which provides superior performance over traditional CMOS devices.