Overview
The SN74HCT573NSR is an octal transparent D-type latch produced by Texas Instruments. It is a high-performance silicon-gate CMOS device designed for data storage, transmission, and buffering in digital systems. This component is particularly useful in applications requiring stable data transfer and immediate output, such as data buses, memory systems, and peripheral control. Its market positioning targets engineers and designers working on digital circuits, offering a reliable solution for logic level conversion and high-current output scenarios.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage | 4.5 to 5.5 | V | |
| High-Level Input Voltage | 2.0 | V | Min |
| Low-Level Input Voltage | 0.8 | V | Max |
| High-Level Output Current | -6.0 | mA | |
| Low-Level Output Current | 6.0 | mA | |
| Operating Temperature | -40 to 85 | °C | |
| Package | SOIC-20 |
Key Features
- Octal transparent D-type latch with 3-state outputs.
- Buffered control inputs for improved noise immunity.
- Parallel data storage and retrieval.
- High-current outputs for driving heavy loads.
- Compatible with TTL inputs for easy integration.
Applications
The SN74HCT573NSR is widely used in various digital systems, including:
- Data Buses: Ensures stable data transfer between components.
- Memory Systems: Acts as a buffer for data storage and retrieval.
- Peripheral Control: Manages data flow between CPUs and peripherals.
- Logic Level Conversion: Converts between different logic voltage levels.
- High-Current Outputs: Suitable for driving LEDs, relays, and other high-current devices.
Q & A
1. What is the primary function of the SN74HCT573NSR?
The primary function is to act as an octal transparent D-type latch for data storage and buffering in digital systems.
2. What is the operating voltage range?
The operating voltage range is 4.5V to 5.5V.
3. How does the latch enable (LE) pin function?
When LE is high, the output follows the input. When LE is low, the output is latched to the last input value.
4. What is the significance of the output enable (OE) pin?
When OE is low, the outputs are enabled. When OE is high, the outputs are in a high-impedance state.
5. Can the SN74HCT573NSR drive high-current loads?
Yes, it is designed to drive high-current loads such as LEDs and relays.
6. Is the SN74HCT573NSR compatible with TTL inputs?
Yes, it is fully compatible with TTL inputs.
7. What is the package type of the SN74HCT573NSR?
It is available in an SOIC-20 package.
8. What is the typical application of this component?
Typical applications include data buses, memory systems, and peripheral control.
9. What is the temperature range for operation?
The operating temperature range is -40°C to 85°C.
10. How does the SN74HCT573NSR improve noise immunity?
It features buffered control inputs that enhance noise immunity in digital systems.
