Overview
The 74HC573PW/C1118 is an 8-bit D-type transparent latch with 3-state outputs, manufactured by NXP USA Inc. This device is part of the 74HC series and is designed for use in a variety of digital logic applications. It features latch enable (LE) and output enable (OE) inputs, allowing for flexible control over data storage and output states.
When the latch enable (LE) input 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 that was present at the inputs a set-up time preceding the HIGH-to-LOW transition of LE. A HIGH on the output enable (OE) input causes the outputs to assume a high-impedance OFF-state, without affecting the state of the latches.
Key Specifications
| Attribute | Value |
|---|---|
| Type Number | 74HC573PW |
| VCC (V) | 2.0 - 6.0 |
| Logic Switching Levels | CMOS |
| Output Drive Capability (mA) | ± 7.8 |
| Propagation Delay (ns) | 14 |
| Operating Temperature (°C) | -40 to 125 |
| Package | TSSOP20 (SOT360-1) |
| Mounting Type | Surface Mount |
| Input Capacitance (pF) | 3.5 |
| Quiescent Current (µA) | 8 |
Key Features
- Latch Enable and Output Enable Inputs: Allows for control over data storage and output states.
- Transparent Latch Operation: When LE is HIGH, the latches are transparent, and the output changes with the D-input.
- 3-State Outputs: Outputs can be set to a high-impedance OFF-state when OE is HIGH.
- CMOS Logic Levels: Compatible with CMOS logic levels.
- Low Power Dissipation: Designed for low power consumption.
- Surface Mount Package: TSSOP20 package for easy integration into surface mount designs.
- Input Clamp Diodes: Enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.
Applications
- Microprocessor and Microcomputer Interfaces: Useful as input or output ports for microprocessors and microcomputers.
- Digital Logic Circuits: Suitable for various digital logic applications requiring data storage and output control.
- Embedded Systems: Can be used in embedded systems where data latching and output control are necessary.
- Industrial Control Systems: Applicable in industrial control systems that require reliable and flexible data handling.
Q & A
- What is the primary function of the 74HC573PW/C1118?
The primary function is to act as an 8-bit D-type transparent latch with 3-state outputs.
- What are the logic switching levels for the 74HC573PW/C1118?
The logic switching levels are CMOS.
- What is the operating temperature range for the 74HC573PW/C1118?
The operating temperature range is -40°C to 125°C.
- What is the package type for the 74HC573PW/C1118?
The package type is TSSOP20 (SOT360-1).
- How does the latch enable (LE) input affect the device?
When LE is HIGH, the latches are transparent; when LE is LOW, the latches store the information present at the inputs.
- What is the effect of the output enable (OE) input on the device?
A HIGH on OE causes the outputs to assume a high-impedance OFF-state without affecting the latch state.
- What is the propagation delay for the 74HC573PW/C1118?
The propagation delay is 14 ns.
- What is the output drive capability of the 74HC573PW/C1118?
The output drive capability is ± 7.8 mA.
- Can the 74HC573PW/C1118 be used in surface mount designs?
Yes, it is designed for surface mount applications.
- What is the quiescent current of the 74HC573PW/C1118?
The quiescent current is 8 µA.
