Overview
The 74HC573D/C4118, produced by NXP USA Inc., is an 8-bit D-type transparent latch with 3-state outputs. This integrated circuit is part of the HC (High-speed CMOS) logic family and is designed for bus-oriented applications. It features latch enable (LE) and output enable (OE) inputs, allowing for flexible control over data storage and output states. The device is particularly useful as an input or output port for microprocessors and microcomputers due to its ability to directly drive bus lines and its balanced propagation delays and transition times.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Type Number | 74HC573D | Part number |
| VCC | 2.0 - 6.0 V | Operating voltage range |
| Logic Switching Levels | CMOS | Logic level compatibility |
| Output Drive Capability | ± 7.8 mA | Maximum output current |
| tpd | 14 ns | Propagation delay time |
| Operating Temperature | -40 °C to +125 °C | Temperature range for operation |
| Package | SO20 (SOT163-1) | Package type and dimensions |
| ESD Protection | HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V | Electrostatic discharge protection levels |
Key Features
- Latch Enable and Output Enable Inputs: The device features latch enable (LE) and output enable (OE) inputs, allowing for transparent latching and 3-state output control.
- 3-State Outputs: The outputs can be placed in a high-impedance OFF-state, making it suitable for bus-oriented applications.
- CMOS Logic Levels: Compatible with CMOS logic levels, ensuring compatibility with a wide range of digital circuits.
- High ESD Protection: Exceeds 2000 V for HBM and 1000 V for CDM, providing robust protection against electrostatic discharge.
- Wide Operating Temperature Range: Operates from -40 °C to +125 °C, making it suitable for various environmental conditions.
- Low Power Dissipation: Designed for low power consumption, which is beneficial for energy-efficient designs.
Applications
- Microprocessor and Microcomputer Interfaces: Useful as input or output ports for microprocessors and microcomputers due to its ability to directly drive bus lines.
- Bus-Oriented Systems: Ideal for bus-oriented applications where 3-state outputs are necessary.
- General Digital Logic Circuits: Can be used in various digital logic circuits requiring latching and 3-state output capabilities.
Q & A
- What is the primary function of the 74HC573D/C4118 IC?
The primary function is to act as an 8-bit D-type transparent latch with 3-state outputs, allowing for data storage and output control in digital circuits.
- What are the operating voltage and temperature ranges for the 74HC573D/C4118?
The operating voltage range is 2.0 - 6.0 V, and the operating temperature range is -40 °C to +125 °C.
- What is the purpose of the LE and OE inputs on the 74HC573D/C4118?
The LE (Latch Enable) input controls when data is latched, and the OE (Output Enable) input controls the output state, allowing it to be in a high-impedance OFF-state.
- What type of logic levels does the 74HC573D/C4118 support?
The 74HC573D/C4118 supports CMOS logic levels.
- What is the maximum output drive capability of the 74HC573D/C4118?
The maximum output drive capability is ± 7.8 mA.
- What is the propagation delay time for the 74HC573D/C4118?
The propagation delay time is 14 ns.
- What kind of ESD protection does the 74HC573D/C4118 offer?
The device exceeds 2000 V for HBM and 1000 V for CDM in terms of ESD protection.
- In what types of applications is the 74HC573D/C4118 commonly used?
It is commonly used in microprocessor and microcomputer interfaces, bus-oriented systems, and general digital logic circuits.
- What package options are available for the 74HC573D/C4118?
The device is available in SO20 (SOT163-1) packages.
- Is the 74HC573D/C4118 compliant with any specific standards?
Yes, it complies with JEDEC standards and has robust ESD protection as per ANSI/ESDA/JEDEC standards.
