74HC573 (Octal D-type Transparent Latch- 3 State Outputs)

Overview

The 74HC573 is a high-speed Silicon-Gate CMOS octal D-type transparent latch with 3-state outputs, designed for use in digital systems requiring data buffering, storage, and bus interfacing. It features eight latches with a common latch enable (LE) and output enable (OE) control, allowing flexible data management. Operating over a wide supply voltage range from 2V to 6V, the 74HC573 is compatible with TTL levels and is ideal for a variety of embedded and digital logic applications. Its 3-state outputs enable connection to shared buses without causing bus contention, making it a staple in microcontroller projects and industrial control systems.

Key Features

• Octal D-type transparent latch with 3-state outputs
• Wide operating voltage range: 2V to 6V
• High noise immunity due to CMOS technology
• Low power consumption with high-speed operation
• 3-state outputs for bus-oriented systems
• Direct interface with TTL logic levels
• Standard 20-pin DIP package for easy breadboarding and prototyping
• Complies with JEDEC standard no. 7A

Technical Specifications

• Number of Circuits: 8 latches (8-bit)
• Circuit Configuration: 8:8 (8 inputs, 8 outputs)
• Output Type: Tri-State (3-State)
• Supply Voltage Range: 2V to 6V
• Propagation Delay Time: Typically 15ns at 5V (refer to datasheet for exact values)
• Output Current: ±7.8mA at VCC = 5V (sink and source)
• Package / Case: 20-DIP (0.300", 7.62mm)
• Operating Temperature Range: -40°C to +85°C (industrial grade)

Applications & Use Cases

• Data buffering and storage in microprocessor systems
• Bus interface for address/data latching
• Register implementation in digital circuits
• Memory address latching for SRAM/EPROM/EEPROM
• Microcontroller I/O expansion (e.g., with Arduino, STM32, PIC)
• Digital signal routing in embedded systems
• Industrial control and automation logic circuits

What's Included

• 1x 74HC573 Octal D-type Transparent Latch IC (20-DIP package)

Compatibility

• Logic Family: HC (High-speed CMOS), compatible with TTL and CMOS logic levels
• Voltage Compatibility: Can be used with 3.3V and 5V logic systems
• Pinout: Standard 20-pin DIP, directly compatible with breadboards and IC sockets
• Cross-reference: Equivalent to 74LS573, 74HCT573 (TTL-compatible versions)

MOKWN Recommendation

The 74HC573 is an essential component for any electronics enthusiast, student, or professional working on digital projects. Its versatility in data latching and bus interfacing makes it invaluable for microcontroller-based designs, especially when expanding I/O or managing multiple data lines. We recommend keeping a few in your component drawer for prototyping and permanent builds. For high-speed applications, consider pairing with a compatible 74HC series logic family. At MOKWN, we ensure genuine components at competitive prices, ready for fast delivery across Egypt.