SN74ACT573DBR Integrated Circuits (ICs)

Logic devices are widely used in circuit design today. A common type of logic device is the latch, which is a digital memory circuit that can store a logic state over a period of time. The SN74ACT573DBR is a widely used latch device in digital circuit design. This article will discuss the application field and working principle of the SN74ACT573DBR.

Application Fields

The SN74ACT573DBR is an 8-bit transparent D-type latch designed to manage and buffer data in bus-oriented applications. It is designed to operate over a voltage range of 2.3V to 5.5V. It has a high-speed bipolar propagation delays with a propagation delay of 22ns to 24ns max. It is ideal for applications in industrial, communication, automotive, and other applications.

The SN74ACT573DBR includes non-inverting and inverting outputs, and it is available in an 18-pin DIP package. It is equipped with a write pulse-length control circuit which controls the write speed of the data bus. It is designed to be signal-compatible with most 5V TTL devices. It also has an open-drain configuration with different address and control lines.

Working Principle

The SN74ACT573DBR is a 8-bit synchronous edge-triggered latch. It has two data lines, one address line, and one write enable line. When the write enable line is activated, the data is latched into the latch and is stored until the next write enable pulse. The data can be accessed by activating the address line which then enables the output lines for the desired data.

The SN74ACT573DBR has two control signals. The first is the write enable signal which is used to initiate the write operation. When the write enable signal is asserted, the data is latched and the output lines are enabled. The second control signal is the write pulse-length control which is used to control the speed of the write operation.

The SN74ACT573DBR is designed to have low power consumption. It features low-power Schottky outputs and consumes only 130μA of quiescent current when disabled. It also has a wide operating temperature range of 0°C to 70°C.

Conclusion

The SN74ACT573DBR is a 8-bit transparent D-type latch designed for bus-oriented applications. It has a high speed bipolar propagation delay and low-power Schottky outputs. It is suitable for industrial, communication, automotive, and other applications. It is designed to be signal-compatible with most 5V TTL devices and operate over a voltage range of 2.3V to 5.5V.