Nexperia USA Inc. 74HC573PW,112

The 74HC573PW,112 is an 8-bit D-type transparent latch with 3-state outputs, manufactured by Nexperia USA Inc. This device is part of the 74HC573 and 74HCT573 series, which are widely used in digital circuits for storage and data registration. The latch features latch enable (LE) and output enable (OE) inputs, allowing for flexible control over data storage and output states.

Although the specific part number 74HC573PW,112 is listed as withdrawn or end-of-life, its specifications and features remain relevant for understanding the capabilities of this series of devices.

• Latch Enable and Output Enable: The device features latch enable (LE) and output enable (OE) inputs, allowing for control over when data is latched and when outputs are active or in a high-impedance state.
• Transparent Latch Operation: When LE is HIGH, the latches are transparent, meaning the output will change each time the corresponding D-input changes. When LE is LOW, the latches store the information present at the inputs a set-up time preceding the HIGH-to-LOW transition of LE.
• 3-State Outputs: Outputs can be set to a high-impedance state by a HIGH on the OE input, which does not affect the state of the latches.
• Input Protection: Inputs include clamp diodes, enabling the use of current-limiting resistors to interface inputs to voltages in excess of V_CC.
• Low Power Dissipation: The device operates with low power dissipation, making it suitable for a wide range of applications.
• High Noise Resistance: The device has high noise resistance, ensuring reliable operation in noisy environments.
• Microprocessor Compatibility: Inputs and outputs are on opposite sides of the package, facilitating easy interface with microprocessors and microcomputers.

The 74HC573 and 74HCT573 series are commonly used in various digital circuit applications, including:

• Storage Elements: In sequential circuits where data needs to be stored and retrieved.
• Data Registers: In arithmetic circuits and other digital systems requiring data storage and manipulation.
• Input/Output Ports: As input or output ports for microprocessors and microcomputers due to their compatibility and ease of interface.
• Bus-Oriented Applications: The 3-state non-inverting outputs make these devices suitable for bus-oriented applications.

1. What is the primary function of the 74HC573PW device?

   The primary function of the 74HC573PW is to act as an 8-bit D-type transparent latch with 3-state outputs, allowing for data storage and output control.

2. What are the key inputs of the 74HC573PW device?

   The key inputs include the latch enable (LE) and output enable (OE) inputs, as well as the D-inputs for data.

3. How does the latch enable (LE) input function?

   When LE is HIGH, the latches are transparent, and when LE is LOW, the latches store the data present at the inputs a set-up time preceding the HIGH-to-LOW transition of LE.

4. What is the effect of a HIGH state on the output enable (OE) input?

   A HIGH state on the OE input causes the outputs to assume a high-impedance state, but does not affect the state of the latches.

5. What is the operating voltage range for the 74HC573PW device?

   The operating voltage range for the 74HC573PW is from 2.0 to 6.0 volts.

6. What is the package type for the 74HC573PW device?

   The package type for the 74HC573PW is TSSOP20 (SOT360-1).

7. Is the 74HC573PW device RoHS compliant?

   Yes, the 74HC573PW device is RoHS compliant.

8. What are the typical applications of the 74HC573PW device?

   The device is typically used as storage elements in sequential circuits, data registers in arithmetic circuits, and as input/output ports for microprocessors and microcomputers.

9. What is the ambient temperature range for the 74HC573PW device?

   The ambient temperature range for the 74HC573PW is from -40°C to 125°C.

10. Why are inputs and outputs on opposite sides of the package beneficial?

    This arrangement facilitates easy interface with microprocessors and microcomputers.